upstream sync ♻

.changeset/clever-jokes-notice.md

+---
+'@eth-optimism/contracts-bedrock': patch
+---
+
+Reduce the time that the system dictator deploy scripts wait before checking the chain state.

docs/op-stack/src/.vuepress/config.js

@@ -150,6 +150,7 @@ module.exports = {
           '/docs/build/getting-started.md',
           '/docs/build/conf.md',
           '/docs/build/explorer.md',
+          '/docs/build/sdk.md',
           {
             title: "OP Stack Hacks",
             collapsable: true,

docs/op-stack/src/.vuepress/enhanceApp.js

+import event from '@vuepress/plugin-pwa/lib/event'
+
 export default ({ router }) => {
+  registerAutoReload();
+  
   router.addRoutes([
     { path: '/docs/', redirect: '/' },
   ])
 }
+
+// When new content is detected by the app, this will automatically
+// refresh the page, so that users do not need to manually click
+// the refresh button. For more details see:
+// https://linear.app/optimism/issue/FE-1003/investigate-archive-issue-on-docs
+const registerAutoReload = () => {
+    event.$on('sw-updated', e => e.skipWaiting().then(() => {
+      location.reload(true);
+    }))
+}

docs/op-stack/src/docs/build/getting-started.md

@@ -39,12 +39,11 @@ This tutorial was checked on:
 | Software | Version    | Installation command(s) |
 | -------- | ---------- | - |
 | Ubuntu   | 20.04 LTS  | |
-| git      | OS default | |
-| make     | 4.2.1-1.2  | `sudo apt install -y make`
+| git, curl, and make | OS default | `sudo apt install -y git curl make` |
 | Go       | 1.20       | `sudo apt update` <br> `wget https://go.dev/dl/go1.20.linux-amd64.tar.gz` <br> `tar xvzf go1.20.linux-amd64.tar.gz` <br> `sudo cp go/bin/go /usr/bin/go` <br> `sudo mv go /usr/lib` <br> `echo export GOROOT=/usr/lib/go >> ~/.bashrc`
-| Node     | 16.19.0    | `curl -fsSL https://deb.nodesource.com/setup_16.x | sudo -E bash -` <br> `sudo apt-get install -y nodejs`
+| Node     | 16.19.0    | `curl -fsSL https://deb.nodesource.com/setup_16.x | sudo -E bash -` <br> `sudo apt-get install -y nodejs npm`
 | yarn     | 1.22.19    | `sudo npm install -g yarn`
-| Foundry  | 0.2.0      | `curl -L https://foundry.paradigm.xyz | bash` <br> `sudo bash` <br> `foundryup`
+| Foundry  | 0.2.0      | `curl -L https://foundry.paradigm.xyz | bash` <br> `. ~/.bashrc` <br> `foundryup`
 
 ## Build the Source Code
 
@@ -74,7 +73,8 @@ We’re going to be spinning up an EVM Rollup from the OP Stack source code.  Yo
 1. Build the various packages inside of the Optimism Monorepo.
 
     ```bash
-    make build
+    make op-node op-batcher
+    yarn build
     ```
 
 ### Build op-geth
@@ -440,20 +440,27 @@ Once you’ve connected your wallet, you’ll probably notice that you don’t h
     cd ~/optimism/packages/contracts-bedrock
     ```
 
-1. Grab the address of the `OptimismPortalProxy` contract:
+1. Grab the address of the proxy to the L1 standard bridge contract:
 
     ```bash
-    cat deployments/getting-started/OptimismPortalProxy.json | grep \"address\":
+    cat deployments/getting-started/Proxy__OVM_L1StandardBridge.json.json | grep \"address\":
     ```
 
     You should see a result like the following (**your address will be different**):
 
     ```
-    "address": "0x264B5fde6B37fb6f1C92AaC17BA144cf9e3DcFE9",
-            "address": "0x264B5fde6B37fb6f1C92AaC17BA144cf9e3DcFE9",
+    "address": "0x874f2E16D803c044F10314A978322da3c9b075c7",
+            "internalType": "address",
+            "type": "address"
+            "internalType": "address",
+            "type": "address"
+            "internalType": "address",
+            "type": "address"
+            "internalType": "address",
+            "type": "address"
     ```
 
-1. Grab the `OptimismPortalProxy` address and, using the wallet that you want to have ETH on your Rollup, send that address a small amount of ETH on Goerli (0.1 or less is fine). It may take up to 5 minutes for that ETH to appear in your wallet on L2.
+1. Grab the L1 bridge proxy contract address and, using the wallet that you want to have ETH on your Rollup, send that address a small amount of ETH on Goerli (0.1 or less is fine). It may take up to 5 minutes for that ETH to appear in your wallet on L2.
 
 ## Use your Rollup
 

docs/op-stack/src/docs/build/sdk.md

+---
+title: Using the SDK with OP Stack
+lang: en-US
+---
+
+When building applications for use with your OP Stack, you can continue to use [the Optimism JavaScript SDK](https://sdk.optimism.io/).
+The main difference is you need to provide some contract addresses to the `CrossDomainMessenger` because they aren't preconfigured.
+
+
+## Contract addresses
+
+### L1 contract addresses
+
+The contract addresses are in `.../optimism/packages/contracts-bedrock/deployments/getting-started`, which you created when you deployed the L1 contracts.
+
+| Contract name when creating `CrossDomainMessenger` | File with address |
+| - | - |
+| `AddressManager`         | `Lib_AddressManager.json`
+| `L1CrossDomainMessenger` | `Proxy__OVM_L1CrossDomainMessenger.json`
+| `L1StandardBridge`       | `Proxy__OVM_L1StandardBridge.json`
+| `OptimismPortal`         | `OptimismPortalProxy.json`
+| `L2OutputOracle`         | `L2OutputOracleProxy.json`
+
+
+### Unneeded contract addresses
+
+Some contracts are required by the SDK, but not actually used.
+For these contracts you can just specify the zero address:
+
+- `StateCommitmentChain`
+- `CanonicalTransactionChain`
+- `BondManager`
+
+In JavaScript you can create the zero address using the expression `"0x".padEnd(42, "0")`.
+
+## The CrossChainMessenger object
+
+These directions assume you are inside the [Hardhat console](https://hardhat.org/hardhat-runner/docs/guides/hardhat-console).
+They further assume that your project already includes the Optimism SDK [`@eth-optimism/sdk`](https://www.npmjs.com/package/@eth-optimism/sdk).
+
+1. Import the SDK
+
+   ```js
+   optimismSDK = require("@eth-optimism/sdk")
+   ```
+
+1. Set the configuration parameters.
+
+   | Variable name | Value |
+   | - | - |
+   | `l1Url` | URL to an RPC provider for L1, for example `https://eth-goerli.g.alchemy.com/v2/<api key>`
+   | `l2Url` | URL to your OP Stack. If running on the same computer, it is `http://localhost:8545`
+   | `privKey` | The private key for an account that has some ETH on the L1
+
+
+1. Create the [providers](https://docs.ethers.org/v5/api/providers/) and [signers](https://docs.ethers.org/v5/api/signer/).
+
+   ```js
+   l1Provider = new ethers.providers.JsonRpcProvider(l1Url)
+   l2Provider = new ethers.providers.JsonRpcProvider(l2Url)
+   l1Signer = new ethers.Wallet(privKey).connect(l1Provider)
+   l2Signer = new ethers.Wallet(privKey).connect(l2Provider)
+   ```
+
+1. Create the L1 contracts structure.
+
+   ```js
+   zeroAddr = "0x".padEnd(42, "0")
+   l1Contracts = {
+      StateCommitmentChain: zeroAddr,
+      CanonicalTransactionChain: zeroAddr,
+      BondManager: zeroAddr,
+      // These contracts have the addresses you found out earlier.
+      AddressManager: "0x....",   // Lib_AddressManager.json
+      L1CrossDomainMessenger: "0x....",   // Proxy__OVM_L1CrossDomainMessenger.json  
+      L1StandardBridge: "0x....",   // Proxy__OVM_L1StandardBridge.json
+      OptimismPortal: "0x....",   // OptimismPortalProxy.json
+      L2OutputOracle: "0x....",   // L2OutputOracleProxy.json
+   }                       
+   ```
+
+1. Create the data structure for the standard bridge.
+
+   ```js
+    bridges = { 
+      Standard: { 
+         l1Bridge: l1Contracts.L1StandardBridge, 
+         l2Bridge: "0x4200000000000000000000000000000000000010", 
+         Adapter: optimismSDK.StandardBridgeAdapter
+      },
+      ETH: {
+         l1Bridge: l1Contracts.L1StandardBridge, 
+         l2Bridge: "0x4200000000000000000000000000000000000010", 
+         Adapter: optimismSDK.ETHBridgeAdapter
+      }
+   }
+   ```
+
+
+1. Create the [`CrossChainMessenger`](https://sdk.optimism.io/classes/crosschainmessenger) object.
+
+   ```js
+   crossChainMessenger = new optimismSDK.CrossChainMessenger({
+      bedrock: true,
+      contracts: {
+         l1: l1Contracts
+      },
+      bridges: bridges,
+      l1ChainId: await l1Signer.getChainId(),
+      l2ChainId: await l2Signer.getChainId(),
+      l1SignerOrProvider: l1Signer,
+      l2SignerOrProvider: l2Signer,    
+   })
+   ```
+
+## Verify SDK functionality
+
+To verify the SDK's functionality, transfer some ETH from L1 to L2.
+
+1. Get the current balances.
+
+   ```js
+   balances0 = [
+      await l1Provider.getBalance(l1Signer.address),
+      await l2Provider.getBalance(l1Signer.address)
+   ]
+   ```
+
+1. Transfer 1 gwei.
+
+   ```js
+   tx = await crossChainMessenger.depositETH(1e9)
+   rcpt = await tx.wait()
+   ```
+
+1. Get the balances after the transfer.
+
+   ```js
+   balances1 = [
+      await l1Provider.getBalance(l1Signer.address),
+      await l2Provider.getBalance(l1Signer.address)
+   ]
+   ```
+
+1. See that the L1 balance changed (probably by a lot more than 1 gwei because of the cost of the transaction).
+
+   ```js
+   (balances0[0]-balances1[0])/1e9
+   ```
+
+1. See that the L2 balance changed (it might take a few minutes).  
+
+   ```js
+   ((await l2Provider.getBalance(l1Signer.address))-balances0[1])/1e9
+   ```

docs/op-stack/src/docs/contribute.md

 ---
-title: Contribute to OP Stack
+title: Contribute to the OP Stack
 lang: en-US
 ---
 

op-batcher/batcher/batch_submitter.go

@@ -12,9 +12,9 @@ import (
 	gethrpc "github.com/ethereum/go-ethereum/rpc"
 	"github.com/urfave/cli"
 
+	"github.com/ethereum-optimism/optimism/op-batcher/metrics"
 	"github.com/ethereum-optimism/optimism/op-batcher/rpc"
 	oplog "github.com/ethereum-optimism/optimism/op-service/log"
-	opmetrics "github.com/ethereum-optimism/optimism/op-service/metrics"
 	oppprof "github.com/ethereum-optimism/optimism/op-service/pprof"
 	oprpc "github.com/ethereum-optimism/optimism/op-service/rpc"
 )
@@ -36,9 +36,10 @@ func Main(version string, cliCtx *cli.Context) error {
 	}
 
 	l := oplog.NewLogger(cfg.LogConfig)
+	m := metrics.NewMetrics("default")
 	l.Info("Initializing Batch Submitter")
 
-	batchSubmitter, err := NewBatchSubmitterFromCLIConfig(cfg, l)
+	batchSubmitter, err := NewBatchSubmitterFromCLIConfig(cfg, l, m)
 	if err != nil {
 		l.Error("Unable to create Batch Submitter", "error", err)
 		return err
@@ -64,16 +65,15 @@ func Main(version string, cliCtx *cli.Context) error {
 		}()
 	}
 
-	registry := opmetrics.NewRegistry()
 	metricsCfg := cfg.MetricsConfig
 	if metricsCfg.Enabled {
 		l.Info("starting metrics server", "addr", metricsCfg.ListenAddr, "port", metricsCfg.ListenPort)
 		go func() {
-			if err := opmetrics.ListenAndServe(ctx, registry, metricsCfg.ListenAddr, metricsCfg.ListenPort); err != nil {
+			if err := m.Serve(ctx, metricsCfg.ListenAddr, metricsCfg.ListenPort); err != nil {
 				l.Error("error starting metrics server", err)
 			}
 		}()
-		opmetrics.LaunchBalanceMetrics(ctx, l, registry, "", batchSubmitter.L1Client, batchSubmitter.From)
+		m.StartBalanceMetrics(ctx, l, batchSubmitter.L1Client, batchSubmitter.From)
 	}
 
 	rpcCfg := cfg.RPCConfig
@@ -95,6 +95,9 @@ func Main(version string, cliCtx *cli.Context) error {
 		return fmt.Errorf("error starting RPC server: %w", err)
 	}
 
+	m.RecordInfo(version)
+	m.RecordUp()
+
 	interruptChannel := make(chan os.Signal, 1)
 	signal.Notify(interruptChannel, []os.Signal{
 		os.Interrupt,

op-batcher/batcher/channel_builder.go

@@ -136,6 +136,8 @@ type channelBuilder struct {
 	blocks []*types.Block
 	// frames data queue, to be send as txs
 	frames []frameData
+	// total amount of output data of all frames created yet
+	outputBytes int
 }
 
 // newChannelBuilder creates a new channel builder or returns an error if the
@@ -156,11 +158,21 @@ func (c *channelBuilder) ID() derive.ChannelID {
 	return c.co.ID()
 }
 
-// InputBytes returns to total amount of input bytes added to the channel.
+// InputBytes returns the total amount of input bytes added to the channel.
 func (c *channelBuilder) InputBytes() int {
 	return c.co.InputBytes()
 }
 
+// ReadyBytes returns the amount of bytes ready in the compression pipeline to
+// output into a frame.
+func (c *channelBuilder) ReadyBytes() int {
+	return c.co.ReadyBytes()
+}
+
+func (c *channelBuilder) OutputBytes() int {
+	return c.outputBytes
+}
+
 // Blocks returns a backup list of all blocks that were added to the channel. It
 // can be used in case the channel needs to be rebuilt.
 func (c *channelBuilder) Blocks() []*types.Block {
@@ -184,22 +196,25 @@ func (c *channelBuilder) Reset() error {
 // AddBlock returns a ChannelFullError if called even though the channel is
 // already full. See description of FullErr for details.
 //
+// AddBlock also returns the L1BlockInfo that got extracted from the block's
+// first transaction for subsequent use by the caller.
+//
 // Call OutputFrames() afterwards to create frames.
-func (c *channelBuilder) AddBlock(block *types.Block) error {
+func (c *channelBuilder) AddBlock(block *types.Block) (derive.L1BlockInfo, error) {
 	if c.IsFull() {
-		return c.FullErr()
+		return derive.L1BlockInfo{}, c.FullErr()
 	}
 
-	batch, err := derive.BlockToBatch(block)
+	batch, l1info, err := derive.BlockToBatch(block)
 	if err != nil {
-		return fmt.Errorf("converting block to batch: %w", err)
+		return l1info, fmt.Errorf("converting block to batch: %w", err)
 	}
 
 	if _, err = c.co.AddBatch(batch); errors.Is(err, derive.ErrTooManyRLPBytes) {
 		c.setFullErr(err)
-		return c.FullErr()
+		return l1info, c.FullErr()
 	} else if err != nil {
-		return fmt.Errorf("adding block to channel out: %w", err)
+		return l1info, fmt.Errorf("adding block to channel out: %w", err)
 	}
 	c.blocks = append(c.blocks, block)
 	c.updateSwTimeout(batch)
@@ -209,7 +224,7 @@ func (c *channelBuilder) AddBlock(block *types.Block) error {
 		// Adding this block still worked, so don't return error, just mark as full
 	}
 
-	return nil
+	return l1info, nil
 }
 
 // Timeout management
@@ -381,10 +396,11 @@ func (c *channelBuilder) outputFrame() error {
 	}
 
 	frame := frameData{
-		id:   txID{chID: c.co.ID(), frameNumber: fn},
+		id:   frameID{chID: c.co.ID(), frameNumber: fn},
 		data: buf.Bytes(),
 	}
 	c.frames = append(c.frames, frame)
+	c.outputBytes += len(frame.data)
 	return err // possibly io.EOF (last frame)
 }
 

op-batcher/batcher/channel_builder_test.go

@@ -2,14 +2,17 @@ package batcher
 
 import (
 	"bytes"
-	"crypto/rand"
+	"errors"
 	"math"
 	"math/big"
+	"math/rand"
 	"testing"
+	"time"
 
 	"github.com/ethereum-optimism/optimism/op-node/eth"
 	"github.com/ethereum-optimism/optimism/op-node/rollup"
 	"github.com/ethereum-optimism/optimism/op-node/rollup/derive"
+	dtest "github.com/ethereum-optimism/optimism/op-node/rollup/derive/test"
 
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/core/types"
@@ -52,54 +55,64 @@ func TestConfigValidation(t *testing.T) {
 	require.ErrorIs(t, validChannelConfig.Check(), ErrInvalidChannelTimeout)
 }
 
-// addNonsenseBlock is a helper function that adds a nonsense block
-// to the channel builder using the [channelBuilder.AddBlock] method.
-func addNonsenseBlock(cb *channelBuilder) error {
-	lBlock := types.NewBlock(&types.Header{
-		BaseFee:    big.NewInt(10),
-		Difficulty: common.Big0,
-		Number:     big.NewInt(100),
-	}, nil, nil, nil, trie.NewStackTrie(nil))
-	l1InfoTx, err := derive.L1InfoDeposit(0, lBlock, eth.SystemConfig{}, false)
-	if err != nil {
-		return err
-	}
-	txs := []*types.Transaction{types.NewTx(l1InfoTx)}
-	a := types.NewBlock(&types.Header{
-		Number: big.NewInt(0),
-	}, txs, nil, nil, trie.NewStackTrie(nil))
-	err = cb.AddBlock(a)
+// addMiniBlock adds a minimal valid L2 block to the channel builder using the
+// channelBuilder.AddBlock method.
+func addMiniBlock(cb *channelBuilder) error {
+	a := newMiniL2Block(0)
+	_, err := cb.AddBlock(a)
 	return err
 }
 
-// buildTooLargeRlpEncodedBlockBatch is a helper function that builds a batch
-// of blocks that are too large to be added to a channel.
-func buildTooLargeRlpEncodedBlockBatch(cb *channelBuilder) error {
-	// Construct a block with way too many txs
-	lBlock := types.NewBlock(&types.Header{
+// newMiniL2Block returns a minimal L2 block with a minimal valid L1InfoDeposit
+// transaction as first transaction. Both blocks are minimal in the sense that
+// most fields are left at defaults or are unset.
+//
+// If numTx > 0, that many empty DynamicFeeTxs will be added to the txs.
+func newMiniL2Block(numTx int) *types.Block {
+	return newMiniL2BlockWithNumberParent(numTx, new(big.Int), (common.Hash{}))
+}
+
+// newMiniL2Block returns a minimal L2 block with a minimal valid L1InfoDeposit
+// transaction as first transaction. Both blocks are minimal in the sense that
+// most fields are left at defaults or are unset. Block number and parent hash
+// will be set to the given parameters number and parent.
+//
+// If numTx > 0, that many empty DynamicFeeTxs will be added to the txs.
+func newMiniL2BlockWithNumberParent(numTx int, number *big.Int, parent common.Hash) *types.Block {
+	l1Block := types.NewBlock(&types.Header{
 		BaseFee:    big.NewInt(10),
 		Difficulty: common.Big0,
 		Number:     big.NewInt(100),
 	}, nil, nil, nil, trie.NewStackTrie(nil))
-	l1InfoTx, _ := derive.L1InfoDeposit(0, lBlock, eth.SystemConfig{}, false)
-	txs := []*types.Transaction{types.NewTx(l1InfoTx)}
-	for i := 0; i < 500_000; i++ {
-		txData := make([]byte, 32)
-		_, _ = rand.Read(txData)
-		tx := types.NewTransaction(0, common.Address{}, big.NewInt(0), 0, big.NewInt(0), txData)
-		txs = append(txs, tx)
+	l1InfoTx, err := derive.L1InfoDeposit(0, l1Block, eth.SystemConfig{}, false)
+	if err != nil {
+		panic(err)
 	}
-	block := types.NewBlock(&types.Header{
-		Number: big.NewInt(0),
+
+	txs := make([]*types.Transaction, 0, 1+numTx)
+	txs = append(txs, types.NewTx(l1InfoTx))
+	for i := 0; i < numTx; i++ {
+		txs = append(txs, types.NewTx(&types.DynamicFeeTx{}))
+	}
+
+	return types.NewBlock(&types.Header{
+		Number:     number,
+		ParentHash: parent,
 	}, txs, nil, nil, trie.NewStackTrie(nil))
+}
 
-	// Try to add the block to the channel builder
-	// This should fail since the block is too large
-	// When a batch is constructed from the block and
-	// then rlp encoded in the channel out, the size
-	// will exceed [derive.MaxRLPBytesPerChannel]
-	err := cb.AddBlock(block)
+// addTooManyBlocks adds blocks to the channel until it hits an error,
+// which is presumably ErrTooManyRLPBytes.
+func addTooManyBlocks(cb *channelBuilder) error {
+	for i := 0; i < 10_000; i++ {
+		block := newMiniL2Block(100)
+		_, err := cb.AddBlock(block)
+		if err != nil {
 			return err
+		}
+	}
+
+	return nil
 }
 
 // FuzzDurationTimeoutZeroMaxChannelDuration ensures that when whenever the MaxChannelDuration
@@ -391,7 +404,7 @@ func TestOutputFrames(t *testing.T) {
 	require.Equal(t, 0, readyBytes)
 
 	// Let's add a block
-	err = addNonsenseBlock(cb)
+	err = addMiniBlock(cb)
 	require.NoError(t, err)
 
 	// Check how many ready bytes
@@ -421,17 +434,18 @@ func TestOutputFrames(t *testing.T) {
 // TestMaxRLPBytesPerChannel tests the [channelBuilder.OutputFrames]
 // function errors when the max RLP bytes per channel is reached.
 func TestMaxRLPBytesPerChannel(t *testing.T) {
+	t.Parallel()
 	channelConfig := defaultTestChannelConfig
-	channelConfig.MaxFrameSize = 2
+	channelConfig.MaxFrameSize = derive.MaxRLPBytesPerChannel * 2
+	channelConfig.TargetFrameSize = derive.MaxRLPBytesPerChannel * 2
+	channelConfig.ApproxComprRatio = 1
 
 	// Construct the channel builder
 	cb, err := newChannelBuilder(channelConfig)
 	require.NoError(t, err)
-	require.False(t, cb.IsFull())
-	require.Equal(t, 0, cb.NumFrames())
 
 	// Add a block that overflows the [ChannelOut]
-	err = buildTooLargeRlpEncodedBlockBatch(cb)
+	err = addTooManyBlocks(cb)
 	require.ErrorIs(t, err, derive.ErrTooManyRLPBytes)
 }
 
@@ -462,7 +476,7 @@ func TestOutputFramesMaxFrameIndex(t *testing.T) {
 		a := types.NewBlock(&types.Header{
 			Number: big.NewInt(0),
 		}, txs, nil, nil, trie.NewStackTrie(nil))
-		err = cb.AddBlock(a)
+		_, err = cb.AddBlock(a)
 		if cb.IsFull() {
 			fullErr := cb.FullErr()
 			require.ErrorIs(t, fullErr, ErrMaxFrameIndex)
@@ -494,7 +508,7 @@ func TestBuilderAddBlock(t *testing.T) {
 	require.NoError(t, err)
 
 	// Add a nonsense block to the channel builder
-	err = addNonsenseBlock(cb)
+	err = addMiniBlock(cb)
 	require.NoError(t, err)
 
 	// Check the fields reset in the AddBlock function
@@ -505,7 +519,7 @@ func TestBuilderAddBlock(t *testing.T) {
 
 	// Since the channel output is full, the next call to AddBlock
 	// should return the channel out full error
-	err = addNonsenseBlock(cb)
+	err = addMiniBlock(cb)
 	require.ErrorIs(t, err, ErrInputTargetReached)
 }
 
@@ -520,7 +534,7 @@ func TestBuilderReset(t *testing.T) {
 	require.NoError(t, err)
 
 	// Add a nonsense block to the channel builder
-	err = addNonsenseBlock(cb)
+	err = addMiniBlock(cb)
 	require.NoError(t, err)
 
 	// Check the fields reset in the Reset function
@@ -536,7 +550,7 @@ func TestBuilderReset(t *testing.T) {
 	require.NoError(t, err)
 
 	// Add another block to increment the block count
-	err = addNonsenseBlock(cb)
+	err = addMiniBlock(cb)
 	require.NoError(t, err)
 
 	// Check the fields reset in the Reset function
@@ -622,3 +636,73 @@ func TestFramePublished(t *testing.T) {
 	// Now the timeout will be 1000
 	require.Equal(t, uint64(1000), cb.timeout)
 }
+
+func TestChannelBuilder_InputBytes(t *testing.T) {
+	require := require.New(t)
+	rng := rand.New(rand.NewSource(time.Now().UnixNano()))
+	cb, _ := defaultChannelBuilderSetup(t)
+
+	require.Zero(cb.InputBytes())
+
+	var l int
+	for i := 0; i < 5; i++ {
+		block := newMiniL2Block(rng.Intn(32))
+		l += blockBatchRlpSize(t, block)
+
+		_, err := cb.AddBlock(block)
+		require.NoError(err)
+		require.Equal(cb.InputBytes(), l)
+	}
+}
+
+func TestChannelBuilder_OutputBytes(t *testing.T) {
+	require := require.New(t)
+	rng := rand.New(rand.NewSource(time.Now().UnixNano()))
+	cfg := defaultTestChannelConfig
+	cfg.TargetFrameSize = 1000
+	cfg.MaxFrameSize = 1000
+	cfg.TargetNumFrames = 16
+	cfg.ApproxComprRatio = 1.0
+	cb, err := newChannelBuilder(cfg)
+	require.NoError(err, "newChannelBuilder")
+
+	require.Zero(cb.OutputBytes())
+
+	for {
+		block, _ := dtest.RandomL2Block(rng, rng.Intn(32))
+		_, err := cb.AddBlock(block)
+		if errors.Is(err, ErrInputTargetReached) {
+			break
+		}
+		require.NoError(err)
+	}
+
+	require.NoError(cb.OutputFrames())
+	require.True(cb.IsFull())
+	require.Greater(cb.NumFrames(), 1)
+
+	var flen int
+	for cb.HasFrame() {
+		f := cb.NextFrame()
+		flen += len(f.data)
+	}
+
+	require.Equal(cb.OutputBytes(), flen)
+}
+
+func defaultChannelBuilderSetup(t *testing.T) (*channelBuilder, ChannelConfig) {
+	t.Helper()
+	cfg := defaultTestChannelConfig
+	cb, err := newChannelBuilder(cfg)
+	require.NoError(t, err, "newChannelBuilder")
+	return cb, cfg
+}
+
+func blockBatchRlpSize(t *testing.T, b *types.Block) int {
+	t.Helper()
+	batch, _, err := derive.BlockToBatch(b)
+	require.NoError(t, err)
+	var buf bytes.Buffer
+	require.NoError(t, batch.EncodeRLP(&buf), "RLP-encoding batch")
+	return buf.Len()
+}

op-batcher/batcher/channel_manager.go

@@ -6,7 +6,9 @@ import (
 	"io"
 	"math"
 
+	"github.com/ethereum-optimism/optimism/op-batcher/metrics"
 	"github.com/ethereum-optimism/optimism/op-node/eth"
+	"github.com/ethereum-optimism/optimism/op-node/rollup/derive"
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/log"
@@ -23,6 +25,7 @@ var ErrReorg = errors.New("block does not extend existing chain")
 // Functions on channelManager are not safe for concurrent access.
 type channelManager struct {
 	log  log.Logger
+	metr metrics.Metricer
 	cfg  ChannelConfig
 
 	// All blocks since the last request for new tx data.
@@ -40,10 +43,12 @@ type channelManager struct {
 	confirmedTransactions map[txID]eth.BlockID
 }
 
-func NewChannelManager(log log.Logger, cfg ChannelConfig) *channelManager {
+func NewChannelManager(log log.Logger, metr metrics.Metricer, cfg ChannelConfig) *channelManager {
 	return &channelManager{
 		log:  log,
+		metr: metr,
 		cfg:  cfg,
+
 		pendingTransactions:   make(map[txID]txData),
 		confirmedTransactions: make(map[txID]eth.BlockID),
 	}
@@ -71,6 +76,8 @@ func (s *channelManager) TxFailed(id txID) {
 	} else {
 		s.log.Warn("unknown transaction marked as failed", "id", id)
 	}
+
+	s.metr.RecordBatchTxFailed()
 }
 
 // TxConfirmed marks a transaction as confirmed on L1. Unfortunately even if all frames in
@@ -78,7 +85,8 @@ func (s *channelManager) TxFailed(id txID) {
 // resubmitted.
 // This function may reset the pending channel if the pending channel has timed out.
 func (s *channelManager) TxConfirmed(id txID, inclusionBlock eth.BlockID) {
-	s.log.Trace("marked transaction as confirmed", "id", id, "block", inclusionBlock)
+	s.metr.RecordBatchTxSubmitted()
+	s.log.Debug("marked transaction as confirmed", "id", id, "block", inclusionBlock)
 	if _, ok := s.pendingTransactions[id]; !ok {
 		s.log.Warn("unknown transaction marked as confirmed", "id", id, "block", inclusionBlock)
 		// TODO: This can occur if we clear the channel while there are still pending transactions
@@ -92,13 +100,15 @@ func (s *channelManager) TxConfirmed(id txID, inclusionBlock eth.BlockID) {
 	// If this channel timed out, put the pending blocks back into the local saved blocks
 	// and then reset this state so it can try to build a new channel.
 	if s.pendingChannelIsTimedOut() {
-		s.log.Warn("Channel timed out", "chID", s.pendingChannel.ID())
+		s.metr.RecordChannelTimedOut(s.pendingChannel.ID())
+		s.log.Warn("Channel timed out", "id", s.pendingChannel.ID())
 		s.blocks = append(s.pendingChannel.Blocks(), s.blocks...)
 		s.clearPendingChannel()
 	}
 	// If we are done with this channel, record that.
 	if s.pendingChannelIsFullySubmitted() {
-		s.log.Info("Channel is fully submitted", "chID", s.pendingChannel.ID())
+		s.metr.RecordChannelFullySubmitted(s.pendingChannel.ID())
+		s.log.Info("Channel is fully submitted", "id", s.pendingChannel.ID())
 		s.clearPendingChannel()
 	}
 }
@@ -194,8 +204,8 @@ func (s *channelManager) TxData(l1Head eth.BlockID) (txData, error) {
 	// all pending blocks be included in this channel for submission.
 	s.registerL1Block(l1Head)
 
-	if err := s.pendingChannel.OutputFrames(); err != nil {
-		return txData{}, fmt.Errorf("creating frames with channel builder: %w", err)
+	if err := s.outputFrames(); err != nil {
+		return txData{}, err
 	}
 
 	return s.nextTxData()
@@ -211,7 +221,11 @@ func (s *channelManager) ensurePendingChannel(l1Head eth.BlockID) error {
 		return fmt.Errorf("creating new channel: %w", err)
 	}
 	s.pendingChannel = cb
-	s.log.Info("Created channel", "chID", cb.ID(), "l1Head", l1Head)
+	s.log.Info("Created channel",
+		"id", cb.ID(),
+		"l1Head", l1Head,
+		"blocks_pending", len(s.blocks))
+	s.metr.RecordChannelOpened(cb.ID(), len(s.blocks))
 
 	return nil
 }
@@ -229,28 +243,27 @@ func (s *channelManager) registerL1Block(l1Head eth.BlockID) {
 // processBlocks adds blocks from the blocks queue to the pending channel until
 // either the queue got exhausted or the channel is full.
 func (s *channelManager) processBlocks() error {
-	var blocksAdded int
-	var _chFullErr *ChannelFullError // throw away, just for type checking
+	var (
+		blocksAdded int
+		_chFullErr  *ChannelFullError // throw away, just for type checking
+		latestL2ref eth.L2BlockRef
+	)
 	for i, block := range s.blocks {
-		if err := s.pendingChannel.AddBlock(block); errors.As(err, &_chFullErr) {
+		l1info, err := s.pendingChannel.AddBlock(block)
+		if errors.As(err, &_chFullErr) {
 			// current block didn't get added because channel is already full
 			break
 		} else if err != nil {
 			return fmt.Errorf("adding block[%d] to channel builder: %w", i, err)
 		}
 		blocksAdded += 1
+		latestL2ref = l2BlockRefFromBlockAndL1Info(block, l1info)
 		// current block got added but channel is now full
 		if s.pendingChannel.IsFull() {
 			break
 		}
 	}
 
-	s.log.Debug("Added blocks to channel",
-		"blocks_added", blocksAdded,
-		"channel_full", s.pendingChannel.IsFull(),
-		"blocks_pending", len(s.blocks)-blocksAdded,
-		"input_bytes", s.pendingChannel.InputBytes(),
-	)
 	if blocksAdded == len(s.blocks) {
 		// all blocks processed, reuse slice
 		s.blocks = s.blocks[:0]
@@ -258,6 +271,53 @@ func (s *channelManager) processBlocks() error {
 		// remove processed blocks
 		s.blocks = s.blocks[blocksAdded:]
 	}
+
+	s.metr.RecordL2BlocksAdded(latestL2ref,
+		blocksAdded,
+		len(s.blocks),
+		s.pendingChannel.InputBytes(),
+		s.pendingChannel.ReadyBytes())
+	s.log.Debug("Added blocks to channel",
+		"blocks_added", blocksAdded,
+		"blocks_pending", len(s.blocks),
+		"channel_full", s.pendingChannel.IsFull(),
+		"input_bytes", s.pendingChannel.InputBytes(),
+		"ready_bytes", s.pendingChannel.ReadyBytes(),
+	)
+	return nil
+}
+
+func (s *channelManager) outputFrames() error {
+	if err := s.pendingChannel.OutputFrames(); err != nil {
+		return fmt.Errorf("creating frames with channel builder: %w", err)
+	}
+	if !s.pendingChannel.IsFull() {
+		return nil
+	}
+
+	inBytes, outBytes := s.pendingChannel.InputBytes(), s.pendingChannel.OutputBytes()
+	s.metr.RecordChannelClosed(
+		s.pendingChannel.ID(),
+		len(s.blocks),
+		s.pendingChannel.NumFrames(),
+		inBytes,
+		outBytes,
+		s.pendingChannel.FullErr(),
+	)
+
+	var comprRatio float64
+	if inBytes > 0 {
+		comprRatio = float64(outBytes) / float64(inBytes)
+	}
+	s.log.Info("Channel closed",
+		"id", s.pendingChannel.ID(),
+		"blocks_pending", len(s.blocks),
+		"num_frames", s.pendingChannel.NumFrames(),
+		"input_bytes", inBytes,
+		"output_bytes", outBytes,
+		"full_reason", s.pendingChannel.FullErr(),
+		"compr_ratio", comprRatio,
+	)
 	return nil
 }
 
@@ -273,3 +333,14 @@ func (s *channelManager) AddL2Block(block *types.Block) error {
 
 	return nil
 }
+
+func l2BlockRefFromBlockAndL1Info(block *types.Block, l1info derive.L1BlockInfo) eth.L2BlockRef {
+	return eth.L2BlockRef{
+		Hash:           block.Hash(),
+		Number:         block.NumberU64(),
+		ParentHash:     block.ParentHash(),
+		Time:           block.Time(),
+		L1Origin:       eth.BlockID{Hash: l1info.BlockHash, Number: l1info.Number},
+		SequenceNumber: l1info.SequenceNumber,
+	}
+}

op-batcher/batcher/channel_manager_test.go

@@ -7,6 +7,7 @@ import (
 	"testing"
 	"time"
 
+	"github.com/ethereum-optimism/optimism/op-batcher/metrics"
 	"github.com/ethereum-optimism/optimism/op-node/eth"
 	"github.com/ethereum-optimism/optimism/op-node/rollup/derive"
 	derivetest "github.com/ethereum-optimism/optimism/op-node/rollup/derive/test"
@@ -14,7 +15,6 @@ import (
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/log"
-	"github.com/ethereum/go-ethereum/trie"
 	"github.com/stretchr/testify/require"
 )
 
@@ -23,7 +23,7 @@ import (
 func TestPendingChannelTimeout(t *testing.T) {
 	// Create a new channel manager with a ChannelTimeout
 	log := testlog.Logger(t, log.LvlCrit)
-	m := NewChannelManager(log, ChannelConfig{
+	m := NewChannelManager(log, metrics.NoopMetrics, ChannelConfig{
 		ChannelTimeout: 100,
 	})
 
@@ -67,7 +67,7 @@ func TestPendingChannelTimeout(t *testing.T) {
 // detects a reorg when it has cached L1 blocks.
 func TestChannelManagerReturnsErrReorg(t *testing.T) {
 	log := testlog.Logger(t, log.LvlCrit)
-	m := NewChannelManager(log, ChannelConfig{})
+	m := NewChannelManager(log, metrics.NoopMetrics, ChannelConfig{})
 
 	a := types.NewBlock(&types.Header{
 		Number: big.NewInt(0),
@@ -101,29 +101,17 @@ func TestChannelManagerReturnsErrReorg(t *testing.T) {
 // detects a reorg even if it does not have any blocks inside it.
 func TestChannelManagerReturnsErrReorgWhenDrained(t *testing.T) {
 	log := testlog.Logger(t, log.LvlCrit)
-	m := NewChannelManager(log, ChannelConfig{
+	m := NewChannelManager(log, metrics.NoopMetrics,
+		ChannelConfig{
 			TargetFrameSize:  0,
 			MaxFrameSize:     120_000,
 			ApproxComprRatio: 1.0,
 		})
-	l1Block := types.NewBlock(&types.Header{
-		BaseFee:    big.NewInt(10),
-		Difficulty: common.Big0,
-		Number:     big.NewInt(100),
-	}, nil, nil, nil, trie.NewStackTrie(nil))
-	l1InfoTx, err := derive.L1InfoDeposit(0, l1Block, eth.SystemConfig{}, false)
-	require.NoError(t, err)
-	txs := []*types.Transaction{types.NewTx(l1InfoTx)}
 
-	a := types.NewBlock(&types.Header{
-		Number: big.NewInt(0),
-	}, txs, nil, nil, trie.NewStackTrie(nil))
-	x := types.NewBlock(&types.Header{
-		Number:     big.NewInt(1),
-		ParentHash: common.Hash{0xff},
-	}, txs, nil, nil, trie.NewStackTrie(nil))
+	a := newMiniL2Block(0)
+	x := newMiniL2BlockWithNumberParent(0, big.NewInt(1), common.Hash{0xff})
 
-	err = m.AddL2Block(a)
+	err := m.AddL2Block(a)
 	require.NoError(t, err)
 
 	_, err = m.TxData(eth.BlockID{})
@@ -138,7 +126,7 @@ func TestChannelManagerReturnsErrReorgWhenDrained(t *testing.T) {
 // TestChannelManagerNextTxData checks the nextTxData function.
 func TestChannelManagerNextTxData(t *testing.T) {
 	log := testlog.Logger(t, log.LvlCrit)
-	m := NewChannelManager(log, ChannelConfig{})
+	m := NewChannelManager(log, metrics.NoopMetrics, ChannelConfig{})
 
 	// Nil pending channel should return EOF
 	returnedTxData, err := m.nextTxData()
@@ -181,7 +169,7 @@ func TestClearChannelManager(t *testing.T) {
 	// Create a channel manager
 	log := testlog.Logger(t, log.LvlCrit)
 	rng := rand.New(rand.NewSource(time.Now().UnixNano()))
-	m := NewChannelManager(log, ChannelConfig{
+	m := NewChannelManager(log, metrics.NoopMetrics, ChannelConfig{
 		// Need to set the channel timeout here so we don't clear pending
 		// channels on confirmation. This would result in [TxConfirmed]
 		// clearing confirmed transactions, and reseting the pendingChannels map
@@ -254,7 +242,7 @@ func TestClearChannelManager(t *testing.T) {
 func TestChannelManagerTxConfirmed(t *testing.T) {
 	// Create a channel manager
 	log := testlog.Logger(t, log.LvlCrit)
-	m := NewChannelManager(log, ChannelConfig{
+	m := NewChannelManager(log, metrics.NoopMetrics, ChannelConfig{
 		// Need to set the channel timeout here so we don't clear pending
 		// channels on confirmation. This would result in [TxConfirmed]
 		// clearing confirmed transactions, and reseting the pendingChannels map
@@ -308,7 +296,7 @@ func TestChannelManagerTxConfirmed(t *testing.T) {
 func TestChannelManagerTxFailed(t *testing.T) {
 	// Create a channel manager
 	log := testlog.Logger(t, log.LvlCrit)
-	m := NewChannelManager(log, ChannelConfig{})
+	m := NewChannelManager(log, metrics.NoopMetrics, ChannelConfig{})
 
 	// Let's add a valid pending transaction to the channel
 	// manager so we can demonstrate correctness
@@ -351,7 +339,8 @@ func TestChannelManager_TxResend(t *testing.T) {
 	require := require.New(t)
 	rng := rand.New(rand.NewSource(time.Now().UnixNano()))
 	log := testlog.Logger(t, log.LvlError)
-	m := NewChannelManager(log, ChannelConfig{
+	m := NewChannelManager(log, metrics.NoopMetrics,
+		ChannelConfig{
 			TargetFrameSize:  0,
 			MaxFrameSize:     120_000,
 			ApproxComprRatio: 1.0,

op-batcher/batcher/config.go

@@ -9,6 +9,7 @@ import (
 	"github.com/urfave/cli"
 
 	"github.com/ethereum-optimism/optimism/op-batcher/flags"
+	"github.com/ethereum-optimism/optimism/op-batcher/metrics"
 	"github.com/ethereum-optimism/optimism/op-batcher/rpc"
 	"github.com/ethereum-optimism/optimism/op-node/rollup"
 	"github.com/ethereum-optimism/optimism/op-node/sources"
@@ -21,18 +22,21 @@ import (
 
 type Config struct {
 	log        log.Logger
+	metr       metrics.Metricer
 	L1Client   *ethclient.Client
 	L2Client   *ethclient.Client
 	RollupNode *sources.RollupClient
+
 	PollInterval time.Duration
-	TxManagerConfig txmgr.Config
 	From         common.Address
+
+	TxManagerConfig txmgr.Config
 	NetworkTimeout  time.Duration
 
 	// RollupConfig is queried at startup
 	Rollup *rollup.Config
 
-	// Channel creation parameters
+	// Channel builder parameters
 	Channel ChannelConfig
 }
 

op-batcher/batcher/driver.go

@@ -10,7 +10,9 @@ import (
 	"sync"
 	"time"
 
+	"github.com/ethereum-optimism/optimism/op-batcher/metrics"
 	"github.com/ethereum-optimism/optimism/op-node/eth"
+	"github.com/ethereum-optimism/optimism/op-node/rollup/derive"
 	opcrypto "github.com/ethereum-optimism/optimism/op-service/crypto"
 	"github.com/ethereum-optimism/optimism/op-service/txmgr"
 	"github.com/ethereum/go-ethereum/core/types"
@@ -34,13 +36,14 @@ type BatchSubmitter struct {
 
 	// lastStoredBlock is the last block loaded into `state`. If it is empty it should be set to the l2 safe head.
 	lastStoredBlock eth.BlockID
+	lastL1Tip       eth.L1BlockRef
 
 	state *channelManager
 }
 
 // NewBatchSubmitterFromCLIConfig initializes the BatchSubmitter, gathering any resources
 // that will be needed during operation.
-func NewBatchSubmitterFromCLIConfig(cfg CLIConfig, l log.Logger) (*BatchSubmitter, error) {
+func NewBatchSubmitterFromCLIConfig(cfg CLIConfig, l log.Logger, m metrics.Metricer) (*BatchSubmitter, error) {
 	ctx := context.Background()
 
 	signer, fromAddress, err := opcrypto.SignerFactoryFromConfig(l, cfg.PrivateKey, cfg.Mnemonic, cfg.SequencerHDPath, cfg.SignerConfig)
@@ -104,12 +107,12 @@ func NewBatchSubmitterFromCLIConfig(cfg CLIConfig, l log.Logger) (*BatchSubmitte
 		return nil, err
 	}
 
-	return NewBatchSubmitter(ctx, batcherCfg, l)
+	return NewBatchSubmitter(ctx, batcherCfg, l, m)
 }
 
 // NewBatchSubmitter initializes the BatchSubmitter, gathering any resources
 // that will be needed during operation.
-func NewBatchSubmitter(ctx context.Context, cfg Config, l log.Logger) (*BatchSubmitter, error) {
+func NewBatchSubmitter(ctx context.Context, cfg Config, l log.Logger, m metrics.Metricer) (*BatchSubmitter, error) {
 	balance, err := cfg.L1Client.BalanceAt(ctx, cfg.From, nil)
 	if err != nil {
 		return nil, err
@@ -118,13 +121,12 @@ func NewBatchSubmitter(ctx context.Context, cfg Config, l log.Logger) (*BatchSub
 	cfg.log = l
 	cfg.log.Info("creating batch submitter", "submitter_addr", cfg.From, "submitter_bal", balance)
 
+	cfg.metr = m
+
 	return &BatchSubmitter{
 		Config: cfg,
 		txMgr:  txmgr.NewSimpleTxManager("batcher", l, cfg.TxManagerConfig, cfg.L1Client),
-		// NewTransactionManager(l,
-		// 	cfg.TxManagerConfig, cfg.Rollup.BatchInboxAddress, cfg.Rollup.L1ChainID,
-		// 	cfg.From, cfg.L1Client),
-		state: NewChannelManager(l, cfg.Channel),
+		state:  NewChannelManager(l, m, cfg.Channel),
 	}, nil
 
 }
@@ -188,13 +190,16 @@ func (l *BatchSubmitter) Stop() error {
 func (l *BatchSubmitter) loadBlocksIntoState(ctx context.Context) {
 	start, end, err := l.calculateL2BlockRangeToStore(ctx)
 	if err != nil {
-		l.log.Trace("was not able to calculate L2 block range", "err", err)
+		l.log.Warn("Error calculating L2 block range", "err", err)
+		return
+	} else if start.Number == end.Number {
 		return
 	}
 
+	var latestBlock *types.Block
 	// Add all blocks to "state"
 	for i := start.Number + 1; i < end.Number+1; i++ {
-		id, err := l.loadBlockIntoState(ctx, i)
+		block, err := l.loadBlockIntoState(ctx, i)
 		if errors.Is(err, ErrReorg) {
 			l.log.Warn("Found L2 reorg", "block_number", i)
 			l.state.Clear()
@@ -204,24 +209,34 @@ func (l *BatchSubmitter) loadBlocksIntoState(ctx context.Context) {
 			l.log.Warn("failed to load block into state", "err", err)
 			return
 		}
-		l.lastStoredBlock = id
+		l.lastStoredBlock = eth.ToBlockID(block)
+		latestBlock = block
 	}
+
+	l2ref, err := derive.L2BlockToBlockRef(latestBlock, &l.Rollup.Genesis)
+	if err != nil {
+		l.log.Warn("Invalid L2 block loaded into state", "err", err)
+		return
+	}
+
+	l.metr.RecordL2BlocksLoaded(l2ref)
 }
 
 // loadBlockIntoState fetches & stores a single block into `state`. It returns the block it loaded.
-func (l *BatchSubmitter) loadBlockIntoState(ctx context.Context, blockNumber uint64) (eth.BlockID, error) {
+func (l *BatchSubmitter) loadBlockIntoState(ctx context.Context, blockNumber uint64) (*types.Block, error) {
 	ctx, cancel := context.WithTimeout(ctx, l.NetworkTimeout)
+	defer cancel()
 	block, err := l.L2Client.BlockByNumber(ctx, new(big.Int).SetUint64(blockNumber))
-	cancel()
 	if err != nil {
-		return eth.BlockID{}, err
+		return nil, fmt.Errorf("getting L2 block: %w", err)
 	}
+
 	if err := l.state.AddL2Block(block); err != nil {
-		return eth.BlockID{}, err
+		return nil, fmt.Errorf("adding L2 block to state: %w", err)
 	}
-	id := eth.ToBlockID(block)
-	l.log.Info("added L2 block to local state", "block", id, "tx_count", len(block.Transactions()), "time", block.Time())
-	return id, nil
+
+	l.log.Info("added L2 block to local state", "block", eth.ToBlockID(block), "tx_count", len(block.Transactions()), "time", block.Time())
+	return block, nil
 }
 
 // calculateL2BlockRangeToStore determines the range (start,end] that should be loaded into the local state.
@@ -284,6 +299,7 @@ func (l *BatchSubmitter) loop() {
 					l.log.Error("Failed to query L1 tip", "error", err)
 					break
 				}
+				l.recordL1Tip(l1tip)
 
 				// Collect next transaction data
 				txdata, err := l.state.TxData(l1tip.ID())
@@ -347,6 +363,14 @@ func (l *BatchSubmitter) SendTransaction(ctx context.Context, data []byte) (*typ
 	}
 }
 
+func (l *BatchSubmitter) recordL1Tip(l1tip eth.L1BlockRef) {
+	if l.lastL1Tip == l1tip {
+		return
+	}
+	l.lastL1Tip = l1tip
+	l.metr.RecordLatestL1Block(l1tip)
+}
+
 func (l *BatchSubmitter) recordFailedTx(id txID, err error) {
 	l.log.Warn("Failed to send transaction", "err", err)
 	l.state.TxFailed(id)

op-batcher/metrics/metrics.go

+package metrics
+
+import (
+	"context"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/ethclient"
+	"github.com/ethereum/go-ethereum/log"
+	"github.com/prometheus/client_golang/prometheus"
+
+	"github.com/ethereum-optimism/optimism/op-node/eth"
+	"github.com/ethereum-optimism/optimism/op-node/rollup/derive"
+	opmetrics "github.com/ethereum-optimism/optimism/op-service/metrics"
+)
+
+const Namespace = "op_batcher"
+
+type Metricer interface {
+	RecordInfo(version string)
+	RecordUp()
+
+	// Records all L1 and L2 block events
+	opmetrics.RefMetricer
+
+	RecordLatestL1Block(l1ref eth.L1BlockRef)
+	RecordL2BlocksLoaded(l2ref eth.L2BlockRef)
+	RecordChannelOpened(id derive.ChannelID, numPendingBlocks int)
+	RecordL2BlocksAdded(l2ref eth.L2BlockRef, numBlocksAdded, numPendingBlocks, inputBytes, outputComprBytes int)
+	RecordChannelClosed(id derive.ChannelID, numPendingBlocks int, numFrames int, inputBytes int, outputComprBytes int, reason error)
+	RecordChannelFullySubmitted(id derive.ChannelID)
+	RecordChannelTimedOut(id derive.ChannelID)
+
+	RecordBatchTxSubmitted()
+	RecordBatchTxSuccess()
+	RecordBatchTxFailed()
+
+	Document() []opmetrics.DocumentedMetric
+}
+
+type Metrics struct {
+	ns       string
+	registry *prometheus.Registry
+	factory  opmetrics.Factory
+
+	opmetrics.RefMetrics
+
+	Info prometheus.GaugeVec
+	Up   prometheus.Gauge
+
+	// label by openend, closed, fully_submitted, timed_out
+	ChannelEvs opmetrics.EventVec
+
+	PendingBlocksCount prometheus.GaugeVec
+	BlocksAddedCount   prometheus.Gauge
+
+	ChannelInputBytes   prometheus.GaugeVec
+	ChannelReadyBytes   prometheus.Gauge
+	ChannelOutputBytes  prometheus.Gauge
+	ChannelClosedReason prometheus.Gauge
+	ChannelNumFrames    prometheus.Gauge
+	ChannelComprRatio   prometheus.Histogram
+
+	BatcherTxEvs opmetrics.EventVec
+}
+
+var _ Metricer = (*Metrics)(nil)
+
+func NewMetrics(procName string) *Metrics {
+	if procName == "" {
+		procName = "default"
+	}
+	ns := Namespace + "_" + procName
+
+	registry := opmetrics.NewRegistry()
+	factory := opmetrics.With(registry)
+
+	return &Metrics{
+		ns:       ns,
+		registry: registry,
+		factory:  factory,
+
+		RefMetrics: opmetrics.MakeRefMetrics(ns, factory),
+
+		Info: *factory.NewGaugeVec(prometheus.GaugeOpts{
+			Namespace: ns,
+			Name:      "info",
+			Help:      "Pseudo-metric tracking version and config info",
+		}, []string{
+			"version",
+		}),
+		Up: factory.NewGauge(prometheus.GaugeOpts{
+			Namespace: ns,
+			Name:      "up",
+			Help:      "1 if the op-batcher has finished starting up",
+		}),
+
+		ChannelEvs: opmetrics.NewEventVec(factory, ns, "channel", "Channel", []string{"stage"}),
+
+		PendingBlocksCount: *factory.NewGaugeVec(prometheus.GaugeOpts{
+			Namespace: ns,
+			Name:      "pending_blocks_count",
+			Help:      "Number of pending blocks, not added to a channel yet.",
+		}, []string{"stage"}),
+		BlocksAddedCount: factory.NewGauge(prometheus.GaugeOpts{
+			Namespace: ns,
+			Name:      "blocks_added_count",
+			Help:      "Total number of blocks added to current channel.",
+		}),
+
+		ChannelInputBytes: *factory.NewGaugeVec(prometheus.GaugeOpts{
+			Namespace: ns,
+			Name:      "input_bytes",
+			Help:      "Number of input bytes to a channel.",
+		}, []string{"stage"}),
+		ChannelReadyBytes: factory.NewGauge(prometheus.GaugeOpts{
+			Namespace: ns,
+			Name:      "ready_bytes",
+			Help:      "Number of bytes ready in the compression buffer.",
+		}),
+		ChannelOutputBytes: factory.NewGauge(prometheus.GaugeOpts{
+			Namespace: ns,
+			Name:      "output_bytes",
+			Help:      "Number of compressed output bytes from a channel.",
+		}),
+		ChannelClosedReason: factory.NewGauge(prometheus.GaugeOpts{
+			Namespace: ns,
+			Name:      "channel_closed_reason",
+			Help:      "Pseudo-metric to record the reason a channel got closed.",
+		}),
+		ChannelNumFrames: factory.NewGauge(prometheus.GaugeOpts{
+			Namespace: ns,
+			Name:      "channel_num_frames",
+			Help:      "Total number of frames of closed channel.",
+		}),
+		ChannelComprRatio: factory.NewHistogram(prometheus.HistogramOpts{
+			Namespace: ns,
+			Name:      "channel_compr_ratio",
+			Help:      "Compression ratios of closed channel.",
+			Buckets:   append([]float64{0.1, 0.2}, prometheus.LinearBuckets(0.3, 0.05, 14)...),
+		}),
+
+		BatcherTxEvs: opmetrics.NewEventVec(factory, ns, "batcher_tx", "BatcherTx", []string{"stage"}),
+	}
+}
+
+func (m *Metrics) Serve(ctx context.Context, host string, port int) error {
+	return opmetrics.ListenAndServe(ctx, m.registry, host, port)
+}
+
+func (m *Metrics) Document() []opmetrics.DocumentedMetric {
+	return m.factory.Document()
+}
+
+func (m *Metrics) StartBalanceMetrics(ctx context.Context,
+	l log.Logger, client *ethclient.Client, account common.Address) {
+	opmetrics.LaunchBalanceMetrics(ctx, l, m.registry, m.ns, client, account)
+}
+
+// RecordInfo sets a pseudo-metric that contains versioning and
+// config info for the op-batcher.
+func (m *Metrics) RecordInfo(version string) {
+	m.Info.WithLabelValues(version).Set(1)
+}
+
+// RecordUp sets the up metric to 1.
+func (m *Metrics) RecordUp() {
+	prometheus.MustRegister()
+	m.Up.Set(1)
+}
+
+const (
+	StageLoaded         = "loaded"
+	StageOpened         = "opened"
+	StageAdded          = "added"
+	StageClosed         = "closed"
+	StageFullySubmitted = "fully_submitted"
+	StageTimedOut       = "timed_out"
+
+	TxStageSubmitted = "submitted"
+	TxStageSuccess   = "success"
+	TxStageFailed    = "failed"
+)
+
+func (m *Metrics) RecordLatestL1Block(l1ref eth.L1BlockRef) {
+	m.RecordL1Ref("latest", l1ref)
+}
+
+// RecordL2BlockLoaded should be called when a new L2 block was loaded into the
+// channel manager (but not processed yet).
+func (m *Metrics) RecordL2BlocksLoaded(l2ref eth.L2BlockRef) {
+	m.RecordL2Ref(StageLoaded, l2ref)
+}
+
+func (m *Metrics) RecordChannelOpened(id derive.ChannelID, numPendingBlocks int) {
+	m.ChannelEvs.Record(StageOpened)
+	m.BlocksAddedCount.Set(0) // reset
+	m.PendingBlocksCount.WithLabelValues(StageOpened).Set(float64(numPendingBlocks))
+}
+
+// RecordL2BlocksAdded should be called when L2 block were added to the channel
+// builder, with the latest added block.
+func (m *Metrics) RecordL2BlocksAdded(l2ref eth.L2BlockRef, numBlocksAdded, numPendingBlocks, inputBytes, outputComprBytes int) {
+	m.RecordL2Ref(StageAdded, l2ref)
+	m.BlocksAddedCount.Add(float64(numBlocksAdded))
+	m.PendingBlocksCount.WithLabelValues(StageAdded).Set(float64(numPendingBlocks))
+	m.ChannelInputBytes.WithLabelValues(StageAdded).Set(float64(inputBytes))
+	m.ChannelReadyBytes.Set(float64(outputComprBytes))
+}
+
+func (m *Metrics) RecordChannelClosed(id derive.ChannelID, numPendingBlocks int, numFrames int, inputBytes int, outputComprBytes int, reason error) {
+	m.ChannelEvs.Record(StageClosed)
+	m.PendingBlocksCount.WithLabelValues(StageClosed).Set(float64(numPendingBlocks))
+	m.ChannelNumFrames.Set(float64(numFrames))
+	m.ChannelInputBytes.WithLabelValues(StageClosed).Set(float64(inputBytes))
+	m.ChannelOutputBytes.Set(float64(outputComprBytes))
+
+	var comprRatio float64
+	if inputBytes > 0 {
+		comprRatio = float64(outputComprBytes) / float64(inputBytes)
+	}
+	m.ChannelComprRatio.Observe(comprRatio)
+
+	m.ChannelClosedReason.Set(float64(ClosedReasonToNum(reason)))
+}
+
+func ClosedReasonToNum(reason error) int {
+	// CLI-3640
+	return 0
+}
+
+func (m *Metrics) RecordChannelFullySubmitted(id derive.ChannelID) {
+	m.ChannelEvs.Record(StageFullySubmitted)
+}
+
+func (m *Metrics) RecordChannelTimedOut(id derive.ChannelID) {
+	m.ChannelEvs.Record(StageTimedOut)
+}
+
+func (m *Metrics) RecordBatchTxSubmitted() {
+	m.BatcherTxEvs.Record(TxStageSubmitted)
+}
+
+func (m *Metrics) RecordBatchTxSuccess() {
+	m.BatcherTxEvs.Record(TxStageSuccess)
+}
+
+func (m *Metrics) RecordBatchTxFailed() {
+	m.BatcherTxEvs.Record(TxStageFailed)
+}

op-batcher/metrics/noop.go

+package metrics
+
+import (
+	"github.com/ethereum-optimism/optimism/op-node/eth"
+	"github.com/ethereum-optimism/optimism/op-node/rollup/derive"
+	opmetrics "github.com/ethereum-optimism/optimism/op-service/metrics"
+)
+
+type noopMetrics struct{ opmetrics.NoopRefMetrics }
+
+var NoopMetrics Metricer = new(noopMetrics)
+
+func (*noopMetrics) Document() []opmetrics.DocumentedMetric { return nil }
+
+func (*noopMetrics) RecordInfo(version string) {}
+func (*noopMetrics) RecordUp()                 {}
+
+func (*noopMetrics) RecordLatestL1Block(l1ref eth.L1BlockRef)               {}
+func (*noopMetrics) RecordL2BlocksLoaded(eth.L2BlockRef)                    {}
+func (*noopMetrics) RecordChannelOpened(derive.ChannelID, int)              {}
+func (*noopMetrics) RecordL2BlocksAdded(eth.L2BlockRef, int, int, int, int) {}
+
+func (*noopMetrics) RecordChannelClosed(derive.ChannelID, int, int, int, int, error) {}
+
+func (*noopMetrics) RecordChannelFullySubmitted(derive.ChannelID) {}
+func (*noopMetrics) RecordChannelTimedOut(derive.ChannelID)       {}
+
+func (*noopMetrics) RecordBatchTxSubmitted() {}
+func (*noopMetrics) RecordBatchTxSuccess()   {}
+func (*noopMetrics) RecordBatchTxFailed()    {}

op-chain-ops/ether/migrate.go

@@ -3,6 +3,10 @@ package ether
 import (
 	"fmt"
 	"math/big"
+	"sync"
+
+	"github.com/ethereum/go-ethereum/rlp"
+	"github.com/ethereum/go-ethereum/trie"
 
 	"github.com/ethereum-optimism/optimism/op-chain-ops/crossdomain"
 	"github.com/ethereum-optimism/optimism/op-chain-ops/util"
@@ -13,6 +17,20 @@ import (
 	"github.com/ethereum/go-ethereum/log"
 )
 
+const (
+	// checkJobs is the number of parallel workers to spawn
+	// when iterating the storage trie.
+	checkJobs = 64
+
+	// BalanceSlot is an ordinal used to represent slots corresponding to OVM_ETH
+	// balances in the state.
+	BalanceSlot = 1
+
+	// AllowanceSlot is an ordinal used to represent slots corresponding to OVM_ETH
+	// allowances in the state.
+	AllowanceSlot = 2
+)
+
 var (
 	// OVMETHAddress is the address of the OVM ETH predeploy.
 	OVMETHAddress = common.HexToAddress("0xDeadDeAddeAddEAddeadDEaDDEAdDeaDDeAD0000")
@@ -27,73 +45,348 @@ var (
 		common.HexToHash("0x0000000000000000000000000000000000000000000000000000000000000005"): true,
 		common.HexToHash("0x0000000000000000000000000000000000000000000000000000000000000006"): true,
 	}
+
+	// maxSlot is the maximum possible storage slot.
+	maxSlot = common.HexToHash("0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff")
+
+	// sequencerEntrypointAddr is the address of the OVM sequencer entrypoint contract.
+	sequencerEntrypointAddr = common.HexToAddress("0x4200000000000000000000000000000000000005")
 )
 
-type FilteredOVMETHAddresses []common.Address
+// accountData is a wrapper struct that contains the balance and address of an account.
+// It gets passed via channel to the collector process.
+type accountData struct {
+	balance    *big.Int
+	legacySlot common.Hash
+	address    common.Address
+}
+
+type DBFactory func() (*state.StateDB, error)
 
-func MigrateLegacyETH(db *state.StateDB, addresses FilteredOVMETHAddresses, chainID int, noCheck bool) error {
+// MigrateBalances migrates all balances in the LegacyERC20ETH contract into state. It performs checks
+// in parallel with mutations in order to reduce overall migration time.
+func MigrateBalances(mutableDB *state.StateDB, dbFactory DBFactory, addresses []common.Address, allowances []*crossdomain.Allowance, chainID int, noCheck bool) error {
 	// Chain params to use for integrity checking.
 	params := crossdomain.ParamsByChainID[chainID]
 	if params == nil {
 		return fmt.Errorf("no chain params for %d", chainID)
 	}
 
-	// Log the chain params for debugging purposes.
-	log.Info("Chain params", "chain-id", chainID, "supply-delta", params.ExpectedSupplyDelta)
+	return doMigration(mutableDB, dbFactory, addresses, allowances, params.ExpectedSupplyDelta, noCheck)
+}
+
+func doMigration(mutableDB *state.StateDB, dbFactory DBFactory, addresses []common.Address, allowances []*crossdomain.Allowance, expDiff *big.Int, noCheck bool) error {
+	// We'll need to maintain a list of all addresses that we've seen along with all of the storage
+	// slots based on the witness data.
+	slotsAddrs := make(map[common.Hash]common.Address)
+	slotsInp := make(map[common.Hash]int)
 
-	// Migrate the legacy ETH to ETH.
-	log.Info("Migrating legacy ETH to ETH", "num-accounts", len(addresses))
-	totalMigrated := new(big.Int)
-	logAccountProgress := util.ProgressLogger(1000, "imported accounts")
+	// For each known address, compute its balance key and add it to the list of addresses.
+	// Mint events are instrumented as regular ETH events in the witness data, so we no longer
+	// need to iterate over mint events during the migration.
 	for _, addr := range addresses {
-		// Balances are pre-checked not have any balances in state.
+		sk := CalcOVMETHStorageKey(addr)
+		slotsAddrs[sk] = addr
+		slotsInp[sk] = BalanceSlot
+	}
+
+	// For each known allowance, compute its storage key and add it to the list of addresses.
+	for _, allowance := range allowances {
+		sk := CalcAllowanceStorageKey(allowance.From, allowance.To)
+		slotsAddrs[sk] = allowance.From
+		slotsInp[sk] = AllowanceSlot
+	}
 
-		// Pull out the OVM ETH balance.
-		ovmBalance := GetOVMETHBalance(db, addr)
+	// Add the old SequencerEntrypoint because someone sent it ETH a long time ago and it has a
+	// balance but none of our instrumentation could easily find it. Special case.
+	entrySK := CalcOVMETHStorageKey(sequencerEntrypointAddr)
+	slotsAddrs[entrySK] = sequencerEntrypointAddr
+	slotsInp[entrySK] = BalanceSlot
 
-		// Actually perform the migration by setting the appropriate values in state.
-		db.SetBalance(addr, ovmBalance)
-		db.SetState(predeploys.LegacyERC20ETHAddr, CalcOVMETHStorageKey(addr), common.Hash{})
+	// WaitGroup to wait on each iteration job to finish.
+	var wg sync.WaitGroup
+	// Channel to receive storage slot keys and values from each iteration job.
+	outCh := make(chan accountData)
+	// Channel to receive errors from each iteration job.
+	errCh := make(chan error, checkJobs)
+	// Channel to cancel all iteration jobs as well as the collector.
+	cancelCh := make(chan struct{})
 
-		// Bump the total OVM balance.
-		totalMigrated = totalMigrated.Add(totalMigrated, ovmBalance)
+	// Define a worker function to iterate over each partition.
+	worker := func(start, end common.Hash) {
+		// Decrement the WaitGroup when the function returns.
+		defer wg.Done()
 
-		// Log progress.
-		logAccountProgress()
+		db, err := dbFactory()
+		if err != nil {
+			log.Crit("cannot get database", "err", err)
 		}
 
-	// Make sure that the total supply delta matches the expected delta. This is equivalent to
-	// checking that the total migrated is equal to the total found, since we already performed the
-	// same check against the total found (a = b, b = c => a = c).
-	totalSupply := getOVMETHTotalSupply(db)
-	delta := new(big.Int).Sub(totalSupply, totalMigrated)
-	if delta.Cmp(params.ExpectedSupplyDelta) != 0 {
+		// Create a new storage trie. Each trie returned by db.StorageTrie
+		// is a copy, so this is safe for concurrent use.
+		st, err := db.StorageTrie(predeploys.LegacyERC20ETHAddr)
+		if err != nil {
+			// Should never happen, so explode if it does.
+			log.Crit("cannot get storage trie for LegacyERC20ETHAddr", "err", err)
+		}
+		if st == nil {
+			// Should never happen, so explode if it does.
+			log.Crit("nil storage trie for LegacyERC20ETHAddr")
+		}
+
+		it := trie.NewIterator(st.NodeIterator(start.Bytes()))
+
+		// Below code is largely based on db.ForEachStorage. We can't use that
+		// because it doesn't allow us to specify a start and end key.
+		for it.Next() {
+			select {
+			case <-cancelCh:
+				// If one of the workers encounters an error, cancel all of them.
+				return
+			default:
+				break
+			}
+
+			// Use the raw (i.e., secure hashed) key to check if we've reached
+			// the end of the partition. Use > rather than >= here to account for
+			// the fact that the values returned by PartitionKeys are inclusive.
+			// Duplicate addresses that may be returned by this iteration are
+			// filtered out in the collector.
+			if new(big.Int).SetBytes(it.Key).Cmp(end.Big()) > 0 {
+				return
+			}
+
+			// Skip if the value is empty.
+			rawValue := it.Value
+			if len(rawValue) == 0 {
+				continue
+			}
+
+			// Get the preimage.
+			rawKey := st.GetKey(it.Key)
+			if rawKey == nil {
+				// Should never happen, so explode if it does.
+				log.Crit("cannot get preimage for storage key", "key", it.Key)
+			}
+			key := common.BytesToHash(rawKey)
+
+			// Parse the raw value.
+			_, content, _, err := rlp.Split(rawValue)
+			if err != nil {
+				// Should never happen, so explode if it does.
+				log.Crit("mal-formed data in state: %v", err)
+			}
+
+			// We can safely ignore specific slots (totalSupply, name, symbol).
+			if ignoredSlots[key] {
+				continue
+			}
+
+			slotType, ok := slotsInp[key]
+			if !ok {
 				if noCheck {
+					log.Error("ignoring unknown storage slot in state", "slot", key.String())
+				} else {
+					errCh <- fmt.Errorf("unknown storage slot in state: %s", key.String())
+					return
+				}
+			}
+
+			// No accounts should have a balance in state. If they do, bail.
+			addr, ok := slotsAddrs[key]
+			if !ok {
+				log.Crit("could not find address in map - should never happen")
+			}
+			bal := db.GetBalance(addr)
+			if bal.Sign() != 0 {
 				log.Error(
-				"supply mismatch",
-				"migrated", totalMigrated.String(),
-				"supply", totalSupply.String(),
-				"delta", delta.String(),
-				"exp_delta", params.ExpectedSupplyDelta.String(),
+					"account has non-zero balance in state - should never happen",
+					"addr", addr,
+					"balance", bal.String(),
 				)
+				if !noCheck {
+					errCh <- fmt.Errorf("account has non-zero balance in state - should never happen: %s", addr.String())
+					return
+				}
+			}
+
+			// Add balances to the total found.
+			switch slotType {
+			case BalanceSlot:
+				// Convert the value to a common.Hash, then send to the channel.
+				value := common.BytesToHash(content)
+				outCh <- accountData{
+					balance:    value.Big(),
+					legacySlot: key,
+					address:    addr,
+				}
+			case AllowanceSlot:
+				// Allowance slot.
+				continue
+			default:
+				// Should never happen.
+				if noCheck {
+					log.Error("unknown slot type", "slot", key, "type", slotType)
 				} else {
-			log.Crit(
+					log.Crit("unknown slot type %d, should never happen", slotType)
+				}
+			}
+		}
+	}
+
+	for i := 0; i < checkJobs; i++ {
+		wg.Add(1)
+
+		// Partition the keyspace per worker.
+		start, end := PartitionKeyspace(i, checkJobs)
+
+		// Kick off our worker.
+		go worker(start, end)
+	}
+
+	// Make a channel to make sure that the collector process completes.
+	collectorCloseCh := make(chan struct{})
+
+	// Keep track of the last error seen.
+	var lastErr error
+
+	// There are multiple ways that the cancel channel can be closed:
+	// - if we receive an error from the errCh
+	// - if the collector process completes
+	// To prevent panics, we wrap the close in a sync.Once.
+	var cancelOnce sync.Once
+
+	// Create a map of accounts we've seen so that we can filter out duplicates.
+	seenAccounts := make(map[common.Address]bool)
+
+	// Keep track of the total migrated supply.
+	totalFound := new(big.Int)
+
+	// Kick off another background process to collect
+	// values from the channel and add them to the map.
+	var count int
+	progress := util.ProgressLogger(1000, "Migrated OVM_ETH storage slot")
+	go func() {
+		defer func() {
+			collectorCloseCh <- struct{}{}
+		}()
+		for {
+			select {
+			case account := <-outCh:
+				progress()
+
+				// Filter out duplicate accounts. See the below note about keyspace iteration for
+				// why we may have to filter out duplicates.
+				if seenAccounts[account.address] {
+					log.Info("skipping duplicate account during iteration", "addr", account.address)
+					continue
+				}
+
+				// Accumulate addresses and total supply.
+				totalFound = new(big.Int).Add(totalFound, account.balance)
+
+				mutableDB.SetBalance(account.address, account.balance)
+				mutableDB.SetState(predeploys.LegacyERC20ETHAddr, account.legacySlot, common.Hash{})
+				count++
+				seenAccounts[account.address] = true
+			case err := <-errCh:
+				cancelOnce.Do(func() {
+					lastErr = err
+					close(cancelCh)
+				})
+			case <-cancelCh:
+				return
+			}
+		}
+	}()
+
+	// Wait for the workers to finish.
+	wg.Wait()
+	// Close the cancel channel to signal the collector process to stop.
+	cancelOnce.Do(func() {
+		close(cancelCh)
+	})
+
+	// Wait for the collector process to finish.
+	<-collectorCloseCh
+
+	// If we saw an error, return it.
+	if lastErr != nil {
+		return lastErr
+	}
+
+	// Log how many slots were iterated over.
+	log.Info("Iterated legacy balances", "count", count)
+
+	// Verify the supply delta. Recorded total supply in the LegacyERC20ETH contract may be higher
+	// than the actual migrated amount because self-destructs will remove ETH supply in a way that
+	// cannot be reflected in the contract. This is fine because self-destructs just mean the L2 is
+	// actually *overcollateralized* by some tiny amount.
+	db, err := dbFactory()
+	if err != nil {
+		log.Crit("cannot get database", "err", err)
+	}
+
+	totalSupply := getOVMETHTotalSupply(db)
+	delta := new(big.Int).Sub(totalSupply, totalFound)
+	if delta.Cmp(expDiff) != 0 {
+		log.Error(
 			"supply mismatch",
-				"migrated", totalMigrated.String(),
+			"migrated", totalFound.String(),
 			"supply", totalSupply.String(),
 			"delta", delta.String(),
-				"exp_delta", params.ExpectedSupplyDelta.String(),
+			"exp_delta", expDiff.String(),
 		)
+		if !noCheck {
+			return fmt.Errorf("supply mismatch: %s", delta.String())
 		}
 	}
 
+	// Supply is verified.
+	log.Info(
+		"supply verified OK",
+		"migrated", totalFound.String(),
+		"supply", totalSupply.String(),
+		"delta", delta.String(),
+		"exp_delta", expDiff.String(),
+	)
+
 	// Set the total supply to 0. We do this because the total supply is necessarily going to be
 	// different than the sum of all balances since we no longer track balances inside the contract
 	// itself. The total supply is going to be weird no matter what, might as well set it to zero
 	// so it's explicitly weird instead of implicitly weird.
-	db.SetState(predeploys.LegacyERC20ETHAddr, getOVMETHTotalSupplySlot(), common.Hash{})
+	mutableDB.SetState(predeploys.LegacyERC20ETHAddr, getOVMETHTotalSupplySlot(), common.Hash{})
 	log.Info("Set the totalSupply to 0")
 
-	// Fin.
 	return nil
 }
+
+// PartitionKeyspace divides the key space into partitions by dividing the maximum keyspace
+// by count then multiplying by i. This will leave some slots left over, which we handle below. It
+// returns the start and end keys for the partition as a common.Hash. Note that the returned range
+// of keys is inclusive, i.e., [start, end] NOT [start, end).
+func PartitionKeyspace(i int, count int) (common.Hash, common.Hash) {
+	if i < 0 || count < 0 {
+		panic("i and count must be greater than 0")
+	}
+
+	if i > count-1 {
+		panic("i must be less than count - 1")
+	}
+
+	// Divide the key space into partitions by dividing the key space by the number
+	// of jobs. This will leave some slots left over, which we handle below.
+	partSize := new(big.Int).Div(maxSlot.Big(), big.NewInt(int64(count)))
+
+	start := common.BigToHash(new(big.Int).Mul(big.NewInt(int64(i)), partSize))
+	var end common.Hash
+	if i < count-1 {
+		// If this is not the last partition, use the next partition's start key as the end.
+		end = common.BigToHash(new(big.Int).Mul(big.NewInt(int64(i+1)), partSize))
+	} else {
+		// If this is the last partition, use the max slot as the end.
+		end = maxSlot
+	}
+
+	return start, end
+}

op-chain-ops/ether/precheck_test.go → op-chain-ops/ether/migrate_test.go

 package ether
 
 import (
-	"bytes"
+	"fmt"
 	"math/big"
 	"math/rand"
-	"os"
-	"sort"
 	"testing"
 
-	"github.com/ethereum/go-ethereum/log"
+	"github.com/ethereum-optimism/optimism/op-bindings/predeploys"
 
 	"github.com/ethereum-optimism/optimism/op-chain-ops/crossdomain"
 	"github.com/ethereum/go-ethereum/common"
@@ -18,9 +16,7 @@ import (
 	"github.com/stretchr/testify/require"
 )
 
-func TestPreCheckBalances(t *testing.T) {
-	log.Root().SetHandler(log.StreamHandler(os.Stderr, log.TerminalFormat(true)))
-
+func TestMigrateBalances(t *testing.T) {
 	tests := []struct {
 		name            string
 		totalSupply     *big.Int
@@ -29,7 +25,7 @@ func TestPreCheckBalances(t *testing.T) {
 		stateAllowances map[common.Address]common.Address
 		inputAddresses  []common.Address
 		inputAllowances []*crossdomain.Allowance
-		check           func(t *testing.T, addrs FilteredOVMETHAddresses, err error)
+		check           func(t *testing.T, db *state.StateDB, err error)
 	}{
 		{
 			name:        "everything matches",
@@ -52,12 +48,11 @@ func TestPreCheckBalances(t *testing.T) {
 					To:   common.HexToAddress("0x456"),
 				},
 			},
-			check: func(t *testing.T, addrs FilteredOVMETHAddresses, err error) {
+			check: func(t *testing.T, db *state.StateDB, err error) {
 				require.NoError(t, err)
-				require.EqualValues(t, FilteredOVMETHAddresses{
-					common.HexToAddress("0x123"),
-					common.HexToAddress("0x456"),
-				}, addrs)
+				require.EqualValues(t, common.Big1, db.GetBalance(common.HexToAddress("0x123")))
+				require.EqualValues(t, common.Big2, db.GetBalance(common.HexToAddress("0x456")))
+				require.EqualValues(t, common.Hash{}, db.GetState(predeploys.LegacyERC20ETHAddr, GetOVMETHTotalSupplySlot()))
 			},
 		},
 		{
@@ -71,11 +66,11 @@ func TestPreCheckBalances(t *testing.T) {
 				common.HexToAddress("0x123"),
 				common.HexToAddress("0x456"),
 			},
-			check: func(t *testing.T, addrs FilteredOVMETHAddresses, err error) {
+			check: func(t *testing.T, db *state.StateDB, err error) {
 				require.NoError(t, err)
-				require.EqualValues(t, FilteredOVMETHAddresses{
-					common.HexToAddress("0x123"),
-				}, addrs)
+				require.EqualValues(t, common.Big1, db.GetBalance(common.HexToAddress("0x123")))
+				require.EqualValues(t, common.Big0, db.GetBalance(common.HexToAddress("0x456")))
+				require.EqualValues(t, common.Hash{}, db.GetState(predeploys.LegacyERC20ETHAddr, GetOVMETHTotalSupplySlot()))
 			},
 		},
 		{
@@ -102,11 +97,11 @@ func TestPreCheckBalances(t *testing.T) {
 					To:   common.HexToAddress("0x789"),
 				},
 			},
-			check: func(t *testing.T, addrs FilteredOVMETHAddresses, err error) {
+			check: func(t *testing.T, db *state.StateDB, err error) {
 				require.NoError(t, err)
-				require.EqualValues(t, FilteredOVMETHAddresses{
-					common.HexToAddress("0x123"),
-				}, addrs)
+				require.EqualValues(t, common.Big1, db.GetBalance(common.HexToAddress("0x123")))
+				require.EqualValues(t, common.Big0, db.GetBalance(common.HexToAddress("0x456")))
+				require.EqualValues(t, common.Hash{}, db.GetState(predeploys.LegacyERC20ETHAddr, GetOVMETHTotalSupplySlot()))
 			},
 		},
 		{
@@ -120,7 +115,7 @@ func TestPreCheckBalances(t *testing.T) {
 			inputAddresses: []common.Address{
 				common.HexToAddress("0x123"),
 			},
-			check: func(t *testing.T, addrs FilteredOVMETHAddresses, err error) {
+			check: func(t *testing.T, db *state.StateDB, err error) {
 				require.Error(t, err)
 				require.ErrorContains(t, err, "unknown storage slot")
 			},
@@ -145,7 +140,7 @@ func TestPreCheckBalances(t *testing.T) {
 					To:   common.HexToAddress("0x456"),
 				},
 			},
-			check: func(t *testing.T, addrs FilteredOVMETHAddresses, err error) {
+			check: func(t *testing.T, db *state.StateDB, err error) {
 				require.Error(t, err)
 				require.ErrorContains(t, err, "unknown storage slot")
 			},
@@ -162,7 +157,7 @@ func TestPreCheckBalances(t *testing.T) {
 				common.HexToAddress("0x123"),
 				common.HexToAddress("0x456"),
 			},
-			check: func(t *testing.T, addrs FilteredOVMETHAddresses, err error) {
+			check: func(t *testing.T, db *state.StateDB, err error) {
 				require.Error(t, err)
 				require.ErrorContains(t, err, "supply mismatch")
 			},
@@ -179,35 +174,25 @@ func TestPreCheckBalances(t *testing.T) {
 				common.HexToAddress("0x123"),
 				common.HexToAddress("0x456"),
 			},
-			check: func(t *testing.T, addrs FilteredOVMETHAddresses, err error) {
+			check: func(t *testing.T, db *state.StateDB, err error) {
 				require.NoError(t, err)
-				require.EqualValues(t, FilteredOVMETHAddresses{
-					common.HexToAddress("0x123"),
-					common.HexToAddress("0x456"),
-				}, addrs)
+				require.EqualValues(t, common.Big1, db.GetBalance(common.HexToAddress("0x123")))
+				require.EqualValues(t, common.Big2, db.GetBalance(common.HexToAddress("0x456")))
 			},
 		},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			db := makeLegacyETH(t, tt.totalSupply, tt.stateBalances, tt.stateAllowances)
-			factory := func() (*state.StateDB, error) {
-				return db, nil
-			}
-			addrs, err := doMigration(factory, tt.inputAddresses, tt.inputAllowances, tt.expDiff, false)
-
-			// Sort the addresses since they come in in a random order.
-			sort.Slice(addrs, func(i, j int) bool {
-				return bytes.Compare(addrs[i][:], addrs[j][:]) < 0
-			})
-
-			tt.check(t, addrs, err)
+			db, factory := makeLegacyETH(t, tt.totalSupply, tt.stateBalances, tt.stateAllowances)
+			err := doMigration(db, factory, tt.inputAddresses, tt.inputAllowances, tt.expDiff, false)
+			tt.check(t, db, err)
 		})
 	}
 }
 
-func makeLegacyETH(t *testing.T, totalSupply *big.Int, balances map[common.Address]*big.Int, allowances map[common.Address]common.Address) *state.StateDB {
-	db, err := state.New(common.Hash{}, state.NewDatabaseWithConfig(rawdb.NewMemoryDatabase(), &trie.Config{
+func makeLegacyETH(t *testing.T, totalSupply *big.Int, balances map[common.Address]*big.Int, allowances map[common.Address]common.Address) (*state.StateDB, DBFactory) {
+	memDB := rawdb.NewMemoryDatabase()
+	db, err := state.New(common.Hash{}, state.NewDatabaseWithConfig(memDB, &trie.Config{
 		Preimages: true,
 		Cache:     1024,
 	}), nil)
@@ -235,13 +220,19 @@ func makeLegacyETH(t *testing.T, totalSupply *big.Int, balances map[common.Addre
 	err = db.Database().TrieDB().Commit(root, true)
 	require.NoError(t, err)
 
-	return db
+	return db, func() (*state.StateDB, error) {
+		return state.New(root, state.NewDatabaseWithConfig(memDB, &trie.Config{
+			Preimages: true,
+			Cache:     1024,
+		}), nil)
+	}
 }
 
-// TestPreCheckBalancesRandom tests that the pre-check balances function works
+// TestMigrateBalancesRandom tests that the pre-check balances function works
 // with random addresses. This test makes sure that the partition logic doesn't
 // miss anything.
-func TestPreCheckBalancesRandom(t *testing.T) {
+func TestMigrateBalancesRandom(t *testing.T) {
+	for i := 0; i < 100; i++ {
 		addresses := make([]common.Address, 0)
 		stateBalances := make(map[common.Address]*big.Int)
 
@@ -250,19 +241,14 @@ func TestPreCheckBalancesRandom(t *testing.T) {
 
 		totalSupply := big.NewInt(0)
 
-	for i := 0; i < 100; i++ {
-		for i := 0; i < rand.Intn(1000); i++ {
+		for j := 0; j < rand.Intn(10000); j++ {
 			addr := randAddr(t)
 			addresses = append(addresses, addr)
 			stateBalances[addr] = big.NewInt(int64(rand.Intn(1_000_000)))
 			totalSupply = new(big.Int).Add(totalSupply, stateBalances[addr])
 		}
 
-		sort.Slice(addresses, func(i, j int) bool {
-			return bytes.Compare(addresses[i][:], addresses[j][:]) < 0
-		})
-
-		for i := 0; i < rand.Intn(1000); i++ {
+		for j := 0; j < rand.Intn(1000); j++ {
 			addr := randAddr(t)
 			to := randAddr(t)
 			allowances = append(allowances, &crossdomain.Allowance{
@@ -272,19 +258,94 @@ func TestPreCheckBalancesRandom(t *testing.T) {
 			stateAllowances[addr] = to
 		}
 
-		db := makeLegacyETH(t, totalSupply, stateBalances, stateAllowances)
-		factory := func() (*state.StateDB, error) {
-			return db, nil
-		}
-
-		outAddrs, err := doMigration(factory, addresses, allowances, big.NewInt(0), false)
+		db, factory := makeLegacyETH(t, totalSupply, stateBalances, stateAllowances)
+		err := doMigration(db, factory, addresses, allowances, big.NewInt(0), false)
 		require.NoError(t, err)
 
-		sort.Slice(outAddrs, func(i, j int) bool {
-			return bytes.Compare(outAddrs[i][:], outAddrs[j][:]) < 0
+		for addr, expBal := range stateBalances {
+			actBal := db.GetBalance(addr)
+			require.EqualValues(t, expBal, actBal)
+		}
+	}
+}
+
+func TestPartitionKeyspace(t *testing.T) {
+	tests := []struct {
+		i        int
+		count    int
+		expected [2]common.Hash
+	}{
+		{
+			i:     0,
+			count: 1,
+			expected: [2]common.Hash{
+				common.HexToHash("0x00"),
+				common.HexToHash("0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"),
+			},
+		},
+		{
+			i:     0,
+			count: 2,
+			expected: [2]common.Hash{
+				common.HexToHash("0x00"),
+				common.HexToHash("0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"),
+			},
+		},
+		{
+			i:     1,
+			count: 2,
+			expected: [2]common.Hash{
+				common.HexToHash("0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"),
+				common.HexToHash("0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"),
+			},
+		},
+		{
+			i:     0,
+			count: 3,
+			expected: [2]common.Hash{
+				common.HexToHash("0x00"),
+				common.HexToHash("0x5555555555555555555555555555555555555555555555555555555555555555"),
+			},
+		},
+		{
+			i:     1,
+			count: 3,
+			expected: [2]common.Hash{
+				common.HexToHash("0x5555555555555555555555555555555555555555555555555555555555555555"),
+				common.HexToHash("0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"),
+			},
+		},
+		{
+			i:     2,
+			count: 3,
+			expected: [2]common.Hash{
+				common.HexToHash("0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"),
+				common.HexToHash("0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"),
+			},
+		},
+	}
+	for _, tt := range tests {
+		t.Run(fmt.Sprintf("i %d, count %d", tt.i, tt.count), func(t *testing.T) {
+			start, end := PartitionKeyspace(tt.i, tt.count)
+			require.Equal(t, tt.expected[0], start)
+			require.Equal(t, tt.expected[1], end)
 		})
-		require.EqualValues(t, addresses, outAddrs)
 	}
+
+	t.Run("panics on invalid i or count", func(t *testing.T) {
+		require.Panics(t, func() {
+			PartitionKeyspace(1, 1)
+		})
+		require.Panics(t, func() {
+			PartitionKeyspace(-1, 1)
+		})
+		require.Panics(t, func() {
+			PartitionKeyspace(0, -1)
+		})
+		require.Panics(t, func() {
+			PartitionKeyspace(-1, -1)
+		})
+	})
 }
 
 func randAddr(t *testing.T) common.Address {

op-chain-ops/ether/precheck.go

-package ether
-
-import (
-	"fmt"
-	"math/big"
-	"sync"
-
-	"github.com/ethereum/go-ethereum/rlp"
-	"github.com/ethereum/go-ethereum/trie"
-
-	"github.com/ethereum-optimism/optimism/op-chain-ops/crossdomain"
-	"github.com/ethereum-optimism/optimism/op-chain-ops/util"
-
-	"github.com/ethereum-optimism/optimism/op-bindings/predeploys"
-	"github.com/ethereum/go-ethereum/common"
-	"github.com/ethereum/go-ethereum/core/state"
-	"github.com/ethereum/go-ethereum/log"
-)
-
-const (
-	// checkJobs is the number of parallel workers to spawn
-	// when iterating the storage trie.
-	checkJobs = 64
-)
-
-// maxSlot is the maximum possible storage slot.
-var maxSlot = common.HexToHash("0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff")
-
-// accountData is a wrapper struct that contains the balance and address of an account.
-// It gets passed via channel to the collector process.
-type accountData struct {
-	balance *big.Int
-	address common.Address
-}
-
-type DBFactory func() (*state.StateDB, error)
-
-// PreCheckBalances checks that the given list of addresses and allowances represents all storage
-// slots in the LegacyERC20ETH contract. We don't have to filter out extra addresses like we do for
-// withdrawals because we'll simply carry the balance of a given address to the new system, if the
-// account is extra then it won't have any balance and nothing will happen.
-func PreCheckBalances(dbFactory DBFactory, addresses []common.Address, allowances []*crossdomain.Allowance, chainID int, noCheck bool) (FilteredOVMETHAddresses, error) {
-	// Chain params to use for integrity checking.
-	params := crossdomain.ParamsByChainID[chainID]
-	if params == nil {
-		return nil, fmt.Errorf("no chain params for %d", chainID)
-	}
-
-	return doMigration(dbFactory, addresses, allowances, params.ExpectedSupplyDelta, noCheck)
-}
-
-func doMigration(dbFactory DBFactory, addresses []common.Address, allowances []*crossdomain.Allowance, expDiff *big.Int, noCheck bool) (FilteredOVMETHAddresses, error) {
-	// We'll need to maintain a list of all addresses that we've seen along with all of the storage
-	// slots based on the witness data.
-	addrs := make([]common.Address, 0)
-	slotsAddrs := make(map[common.Hash]common.Address)
-	slotsInp := make(map[common.Hash]int)
-
-	// For each known address, compute its balance key and add it to the list of addresses.
-	// Mint events are instrumented as regular ETH events in the witness data, so we no longer
-	// need to iterate over mint events during the migration.
-	for _, addr := range addresses {
-		sk := CalcOVMETHStorageKey(addr)
-		slotsAddrs[sk] = addr
-		slotsInp[sk] = 1
-	}
-
-	// For each known allowance, compute its storage key and add it to the list of addresses.
-	for _, allowance := range allowances {
-		sk := CalcAllowanceStorageKey(allowance.From, allowance.To)
-		slotsAddrs[sk] = allowance.From
-		slotsInp[sk] = 2
-	}
-
-	// Add the old SequencerEntrypoint because someone sent it ETH a long time ago and it has a
-	// balance but none of our instrumentation could easily find it. Special case.
-	sequencerEntrypointAddr := common.HexToAddress("0x4200000000000000000000000000000000000005")
-	entrySK := CalcOVMETHStorageKey(sequencerEntrypointAddr)
-	slotsAddrs[entrySK] = sequencerEntrypointAddr
-	slotsInp[entrySK] = 1
-
-	// WaitGroup to wait on each iteration job to finish.
-	var wg sync.WaitGroup
-	// Channel to receive storage slot keys and values from each iteration job.
-	outCh := make(chan accountData)
-	// Channel to receive errors from each iteration job.
-	errCh := make(chan error, checkJobs)
-	// Channel to cancel all iteration jobs as well as the collector.
-	cancelCh := make(chan struct{})
-
-	// Keep track of the total migrated supply.
-	totalFound := new(big.Int)
-
-	// Divide the key space into partitions by dividing the key space by the number
-	// of jobs. This will leave some slots left over, which we handle below.
-	partSize := new(big.Int).Div(maxSlot.Big(), big.NewInt(checkJobs))
-
-	// Define a worker function to iterate over each partition.
-	worker := func(start, end common.Hash) {
-		// Decrement the WaitGroup when the function returns.
-		defer wg.Done()
-
-		db, err := dbFactory()
-		if err != nil {
-			log.Crit("cannot get database", "err", err)
-		}
-
-		// Create a new storage trie. Each trie returned by db.StorageTrie
-		// is a copy, so this is safe for concurrent use.
-		st, err := db.StorageTrie(predeploys.LegacyERC20ETHAddr)
-		if err != nil {
-			// Should never happen, so explode if it does.
-			log.Crit("cannot get storage trie for LegacyERC20ETHAddr", "err", err)
-		}
-		if st == nil {
-			// Should never happen, so explode if it does.
-			log.Crit("nil storage trie for LegacyERC20ETHAddr")
-		}
-
-		it := trie.NewIterator(st.NodeIterator(start.Bytes()))
-
-		// Below code is largely based on db.ForEachStorage. We can't use that
-		// because it doesn't allow us to specify a start and end key.
-		for it.Next() {
-			select {
-			case <-cancelCh:
-				// If one of the workers encounters an error, cancel all of them.
-				return
-			default:
-				break
-			}
-
-			// Use the raw (i.e., secure hashed) key to check if we've reached
-			// the end of the partition.
-			if new(big.Int).SetBytes(it.Key).Cmp(end.Big()) >= 0 {
-				return
-			}
-
-			// Skip if the value is empty.
-			rawValue := it.Value
-			if len(rawValue) == 0 {
-				continue
-			}
-
-			// Get the preimage.
-			key := common.BytesToHash(st.GetKey(it.Key))
-
-			// Parse the raw value.
-			_, content, _, err := rlp.Split(rawValue)
-			if err != nil {
-				// Should never happen, so explode if it does.
-				log.Crit("mal-formed data in state: %v", err)
-			}
-
-			// We can safely ignore specific slots (totalSupply, name, symbol).
-			if ignoredSlots[key] {
-				continue
-			}
-
-			slotType, ok := slotsInp[key]
-			if !ok {
-				if noCheck {
-					log.Error("ignoring unknown storage slot in state", "slot", key.String())
-				} else {
-					errCh <- fmt.Errorf("unknown storage slot in state: %s", key.String())
-					return
-				}
-			}
-
-			// No accounts should have a balance in state. If they do, bail.
-			addr, ok := slotsAddrs[key]
-			if !ok {
-				log.Crit("could not find address in map - should never happen")
-			}
-			bal := db.GetBalance(addr)
-			if bal.Sign() != 0 {
-				log.Error(
-					"account has non-zero balance in state - should never happen",
-					"addr", addr,
-					"balance", bal.String(),
-				)
-				if !noCheck {
-					errCh <- fmt.Errorf("account has non-zero balance in state - should never happen: %s", addr.String())
-					return
-				}
-			}
-
-			// Add balances to the total found.
-			switch slotType {
-			case 1:
-				// Convert the value to a common.Hash, then send to the channel.
-				value := common.BytesToHash(content)
-				outCh <- accountData{
-					balance: value.Big(),
-					address: addr,
-				}
-			case 2:
-				// Allowance slot.
-				continue
-			default:
-				// Should never happen.
-				if noCheck {
-					log.Error("unknown slot type", "slot", key, "type", slotType)
-				} else {
-					log.Crit("unknown slot type %d, should never happen", slotType)
-				}
-			}
-		}
-	}
-
-	for i := 0; i < checkJobs; i++ {
-		wg.Add(1)
-
-		// Compute the start and end keys for this partition.
-		start := common.BigToHash(new(big.Int).Mul(big.NewInt(int64(i)), partSize))
-		var end common.Hash
-		if i < checkJobs-1 {
-			// If this is not the last partition, use the next partition's start key as the end.
-			end = common.BigToHash(new(big.Int).Mul(big.NewInt(int64(i+1)), partSize))
-		} else {
-			// If this is the last partition, use the max slot as the end.
-			end = maxSlot
-		}
-
-		// Kick off our worker.
-		go worker(start, end)
-	}
-
-	// Make a channel to make sure that the collector process completes.
-	collectorCloseCh := make(chan struct{})
-
-	// Keep track of the last error seen.
-	var lastErr error
-
-	// There are multiple ways that the cancel channel can be closed:
-	// - if we receive an error from the errCh
-	// - if the collector process completes
-	// To prevent panics, we wrap the close in a sync.Once.
-	var cancelOnce sync.Once
-
-	// Kick off another background process to collect
-	// values from the channel and add them to the map.
-	var count int
-	progress := util.ProgressLogger(1000, "Collected OVM_ETH storage slot")
-	go func() {
-		defer func() {
-			collectorCloseCh <- struct{}{}
-		}()
-		for {
-			select {
-			case account := <-outCh:
-				progress()
-				// Accumulate addresses and total supply.
-				addrs = append(addrs, account.address)
-				totalFound = new(big.Int).Add(totalFound, account.balance)
-			case err := <-errCh:
-				lastErr = err
-				cancelOnce.Do(func() {
-					close(cancelCh)
-				})
-			case <-cancelCh:
-				return
-			}
-		}
-	}()
-
-	// Wait for the workers to finish.
-	wg.Wait()
-	// Close the cancel channel to signal the collector process to stop.
-	cancelOnce.Do(func() {
-		close(cancelCh)
-	})
-
-	// Wait for the collector process to finish.
-	<-collectorCloseCh
-
-	// If we saw an error, return it.
-	if lastErr != nil {
-		return nil, lastErr
-	}
-
-	// Log how many slots were iterated over.
-	log.Info("Iterated legacy balances", "count", count)
-
-	// Verify the supply delta. Recorded total supply in the LegacyERC20ETH contract may be higher
-	// than the actual migrated amount because self-destructs will remove ETH supply in a way that
-	// cannot be reflected in the contract. This is fine because self-destructs just mean the L2 is
-	// actually *overcollateralized* by some tiny amount.
-	db, err := dbFactory()
-	if err != nil {
-		log.Crit("cannot get database", "err", err)
-	}
-
-	totalSupply := getOVMETHTotalSupply(db)
-	delta := new(big.Int).Sub(totalSupply, totalFound)
-	if delta.Cmp(expDiff) != 0 {
-		log.Error(
-			"supply mismatch",
-			"migrated", totalFound.String(),
-			"supply", totalSupply.String(),
-			"delta", delta.String(),
-			"exp_delta", expDiff.String(),
-		)
-		if !noCheck {
-			return nil, fmt.Errorf("supply mismatch: %s", delta.String())
-		}
-	}
-
-	// Supply is verified.
-	log.Info(
-		"supply verified OK",
-		"migrated", totalFound.String(),
-		"supply", totalSupply.String(),
-		"delta", delta.String(),
-		"exp_delta", expDiff.String(),
-	)
-
-	// We know we have at least a superset of all addresses here since we know that we have every
-	// storage slot. It's fine to have extras because they won't have any balance.
-	return addrs, nil
-}

op-chain-ops/genesis/check.go

@@ -7,6 +7,8 @@ import (
 	"fmt"
 	"math/big"
 
+	"github.com/ethereum-optimism/optimism/op-chain-ops/util"
+
 	"github.com/ethereum-optimism/optimism/op-chain-ops/ether"
 
 	"github.com/ethereum/go-ethereum/common"
@@ -508,7 +510,9 @@ func CheckWithdrawalsAfter(db vm.StateDB, data crossdomain.MigrationData, l1Cros
 	// Now, iterate over each legacy withdrawal and check if there is a corresponding
 	// migrated withdrawal.
 	var innerErr error
+	progress := util.ProgressLogger(1000, "checking withdrawals")
 	err = db.ForEachStorage(predeploys.LegacyMessagePasserAddr, func(key, value common.Hash) bool {
+		progress()
 		// The legacy message passer becomes a proxy during the migration,
 		// so we need to ignore the implementation/admin slots.
 		if key == ImplementationSlot || key == AdminSlot {

op-chain-ops/genesis/config.go

@@ -76,6 +76,8 @@ type DeployConfig struct {
 	ProxyAdminOwner common.Address `json:"proxyAdminOwner"`
 	// Owner of the system on L1
 	FinalSystemOwner common.Address `json:"finalSystemOwner"`
+	// GUARDIAN account in the OptimismPortal
+	PortalGuardian common.Address `json:"portalGuardian"`
 	// L1 recipient of fees accumulated in the BaseFeeVault
 	BaseFeeVaultRecipient common.Address `json:"baseFeeVaultRecipient"`
 	// L1 recipient of fees accumulated in the L1FeeVault
@@ -128,6 +130,9 @@ func (d *DeployConfig) Check() error {
 	if d.FinalizationPeriodSeconds == 0 {
 		return fmt.Errorf("%w: FinalizationPeriodSeconds cannot be 0", ErrInvalidDeployConfig)
 	}
+	if d.PortalGuardian == (common.Address{}) {
+		return fmt.Errorf("%w: PortalGuardian cannot be address(0)", ErrInvalidDeployConfig)
+	}
 	if d.MaxSequencerDrift == 0 {
 		return fmt.Errorf("%w: MaxSequencerDrift cannot be 0", ErrInvalidDeployConfig)
 	}

op-chain-ops/genesis/db_migration.go

@@ -143,16 +143,6 @@ func MigrateDB(ldb ethdb.Database, config *DeployConfig, l1Block *types.Block, m
 		filteredWithdrawals = crossdomain.SafeFilteredWithdrawals(unfilteredWithdrawals)
 	}
 
-	// We also need to verify that we have all of the storage slots for the LegacyERC20ETH contract
-	// that we expect to have. An error will be thrown if there are any missing storage slots.
-	// Unlike with withdrawals, we do not need to filter out extra addresses because their balances
-	// would necessarily be zero and therefore not affect the migration.
-	log.Info("Checking addresses...", "no-check", noCheck)
-	addrs, err := ether.PreCheckBalances(dbFactory, migrationData.Addresses(), migrationData.OvmAllowances, int(config.L1ChainID), noCheck)
-	if err != nil {
-		return nil, fmt.Errorf("addresses mismatch: %w", err)
-	}
-
 	// At this point we've fully verified the witness data for the migration, so we can begin the
 	// actual migration process. This involves modifying parts of the legacy database and inserting
 	// a transition block.
@@ -202,11 +192,12 @@ func MigrateDB(ldb ethdb.Database, config *DeployConfig, l1Block *types.Block, m
 	}
 
 	// Finally we migrate the balances held inside the LegacyERC20ETH contract into the state trie.
-	// We also delete the balances from the LegacyERC20ETH contract.
+	// We also delete the balances from the LegacyERC20ETH contract. Unlike the steps above, this step
+	// combines the check and mutation steps into one in order to reduce migration time.
 	log.Info("Starting to migrate ERC20 ETH")
-	err = ether.MigrateLegacyETH(db, addrs, int(config.L1ChainID), noCheck)
+	err = ether.MigrateBalances(db, dbFactory, migrationData.Addresses(), migrationData.OvmAllowances, int(config.L1ChainID), noCheck)
 	if err != nil {
-		return nil, fmt.Errorf("cannot migrate legacy eth: %w", err)
+		return nil, fmt.Errorf("failed to migrate OVM_ETH: %w", err)
 	}
 
 	// We're done messing around with the database, so we can now commit the changes to the DB.

op-chain-ops/genesis/layer_one.go

@@ -295,7 +295,7 @@ func deployL1Contracts(config *DeployConfig, backend *backends.SimulatedBackend)
 			Name: "OptimismPortal",
 			Args: []interface{}{
 				predeploys.DevL2OutputOracleAddr,
-				config.FinalSystemOwner,
+				config.PortalGuardian,
 				true, // _paused
 			},
 		},

op-chain-ops/genesis/testdata/test-deploy-config-full.json

@@ -19,6 +19,7 @@
   "l1GenesisBlockGasLimit": "0xe4e1c0",
   "l1GenesisBlockDifficulty": "0x1",
   "finalSystemOwner": "0x0000000000000000000000000000000000000111",
+  "portalGuardian": "0x0000000000000000000000000000000000000112",
   "finalizationPeriodSeconds": 2,
   "l1GenesisBlockMixHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
   "l1GenesisBlockCoinbase": "0x0000000000000000000000000000000000000000",

op-e2e/bridge_test.go

+package op_e2e
+
+import (
+	"math"
+	"math/big"
+	"testing"
+	"time"
+
+	"github.com/ethereum-optimism/optimism/op-bindings/bindings"
+	"github.com/ethereum-optimism/optimism/op-bindings/predeploys"
+	"github.com/ethereum-optimism/optimism/op-node/rollup/derive"
+	"github.com/ethereum-optimism/optimism/op-node/testlog"
+	"github.com/ethereum/go-ethereum/accounts/abi/bind"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/log"
+	"github.com/ethereum/go-ethereum/params"
+	"github.com/stretchr/testify/require"
+)
+
+// TestERC20BridgeDeposits tests the the L1StandardBridge bridge ERC20
+// functionality.
+func TestERC20BridgeDeposits(t *testing.T) {
+	parallel(t)
+	if !verboseGethNodes {
+		log.Root().SetHandler(log.DiscardHandler())
+	}
+
+	cfg := DefaultSystemConfig(t)
+
+	sys, err := cfg.Start()
+	require.Nil(t, err, "Error starting up system")
+	defer sys.Close()
+
+	log := testlog.Logger(t, log.LvlInfo)
+	log.Info("genesis", "l2", sys.RollupConfig.Genesis.L2, "l1", sys.RollupConfig.Genesis.L1, "l2_time", sys.RollupConfig.Genesis.L2Time)
+
+	l1Client := sys.Clients["l1"]
+	l2Client := sys.Clients["sequencer"]
+
+	opts, err := bind.NewKeyedTransactorWithChainID(sys.cfg.Secrets.Alice, cfg.L1ChainIDBig())
+	require.Nil(t, err)
+
+	// Deploy WETH9
+	weth9Address, tx, WETH9, err := bindings.DeployWETH9(opts, l1Client)
+	require.NoError(t, err)
+	_, err = waitForTransaction(tx.Hash(), l1Client, 3*time.Duration(cfg.DeployConfig.L1BlockTime)*time.Second)
+	require.NoError(t, err, "Waiting for deposit tx on L1")
+
+	// Get some WETH
+	opts.Value = big.NewInt(params.Ether)
+	tx, err = WETH9.Fallback(opts, []byte{})
+	require.NoError(t, err)
+	_, err = waitForTransaction(tx.Hash(), l1Client, 3*time.Duration(cfg.DeployConfig.L1BlockTime)*time.Second)
+	require.NoError(t, err)
+	opts.Value = nil
+	wethBalance, err := WETH9.BalanceOf(&bind.CallOpts{}, opts.From)
+	require.NoError(t, err)
+	require.Equal(t, big.NewInt(params.Ether), wethBalance)
+
+	// Deploy L2 WETH9
+	l2Opts, err := bind.NewKeyedTransactorWithChainID(sys.cfg.Secrets.Alice, cfg.L2ChainIDBig())
+	require.NoError(t, err)
+	optimismMintableTokenFactory, err := bindings.NewOptimismMintableERC20Factory(predeploys.OptimismMintableERC20FactoryAddr, l2Client)
+	require.NoError(t, err)
+	tx, err = optimismMintableTokenFactory.CreateOptimismMintableERC20(l2Opts, weth9Address, "L2-WETH", "L2-WETH")
+	require.NoError(t, err)
+	_, err = waitForTransaction(tx.Hash(), l2Client, 3*time.Duration(cfg.DeployConfig.L2BlockTime)*time.Second)
+	require.NoError(t, err)
+
+	// Get the deployment event to have access to the L2 WETH9 address
+	it, err := optimismMintableTokenFactory.FilterOptimismMintableERC20Created(&bind.FilterOpts{Start: 0}, nil, nil)
+	require.NoError(t, err)
+	var event *bindings.OptimismMintableERC20FactoryOptimismMintableERC20Created
+	for it.Next() {
+		event = it.Event
+	}
+	require.NotNil(t, event)
+
+	// Approve WETH9 with the bridge
+	tx, err = WETH9.Approve(opts, predeploys.DevL1StandardBridgeAddr, new(big.Int).SetUint64(math.MaxUint64))
+	require.NoError(t, err)
+	_, err = waitForTransaction(tx.Hash(), l1Client, 3*time.Duration(cfg.DeployConfig.L1BlockTime)*time.Second)
+	require.NoError(t, err)
+
+	// Bridge the WETH9
+	l1StandardBridge, err := bindings.NewL1StandardBridge(predeploys.DevL1StandardBridgeAddr, l1Client)
+	require.NoError(t, err)
+	tx, err = l1StandardBridge.BridgeERC20(opts, weth9Address, event.LocalToken, big.NewInt(100), 100000, []byte{})
+	require.NoError(t, err)
+	depositReceipt, err := waitForTransaction(tx.Hash(), l1Client, 3*time.Duration(cfg.DeployConfig.L1BlockTime)*time.Second)
+	require.NoError(t, err)
+
+	t.Log("Deposit through L1StandardBridge", "gas used", depositReceipt.GasUsed)
+
+	// compute the deposit transaction hash + poll for it
+	portal, err := bindings.NewOptimismPortal(predeploys.DevOptimismPortalAddr, l1Client)
+	require.NoError(t, err)
+
+	depIt, err := portal.FilterTransactionDeposited(&bind.FilterOpts{Start: 0}, nil, nil, nil)
+	require.NoError(t, err)
+	var depositEvent *bindings.OptimismPortalTransactionDeposited
+	for depIt.Next() {
+		depositEvent = depIt.Event
+	}
+	require.NotNil(t, depositEvent)
+
+	depositTx, err := derive.UnmarshalDepositLogEvent(&depositEvent.Raw)
+	require.NoError(t, err)
+	_, err = waitForTransaction(types.NewTx(depositTx).Hash(), l2Client, 3*time.Duration(cfg.DeployConfig.L2BlockTime)*time.Second)
+	require.NoError(t, err)
+
+	// Ensure that the deposit went through
+	optimismMintableToken, err := bindings.NewOptimismMintableERC20(event.LocalToken, l2Client)
+	require.NoError(t, err)
+
+	// Should have balance on L2
+	l2Balance, err := optimismMintableToken.BalanceOf(&bind.CallOpts{}, opts.From)
+	require.NoError(t, err)
+	require.Equal(t, l2Balance, big.NewInt(100))
+}

op-e2e/migration_test.go

@@ -12,6 +12,7 @@ import (
 	"time"
 
 	bss "github.com/ethereum-optimism/optimism/op-batcher/batcher"
+	batchermetrics "github.com/ethereum-optimism/optimism/op-batcher/metrics"
 	"github.com/ethereum-optimism/optimism/op-node/chaincfg"
 	"github.com/ethereum-optimism/optimism/op-node/sources"
 	l2os "github.com/ethereum-optimism/optimism/op-proposer/proposer"
@@ -341,7 +342,7 @@ func TestMigration(t *testing.T) {
 			Format: "text",
 		},
 		PrivateKey: hexPriv(secrets.Batcher),
-	}, lgr.New("module", "batcher"))
+	}, lgr.New("module", "batcher"), batchermetrics.NoopMetrics)
 	require.NoError(t, err)
 	t.Cleanup(func() {
 		batcher.StopIfRunning()

op-e2e/setup.go

@@ -24,6 +24,7 @@ import (
 	"github.com/stretchr/testify/require"
 
 	bss "github.com/ethereum-optimism/optimism/op-batcher/batcher"
+	batchermetrics "github.com/ethereum-optimism/optimism/op-batcher/metrics"
 	"github.com/ethereum-optimism/optimism/op-bindings/predeploys"
 	"github.com/ethereum-optimism/optimism/op-chain-ops/genesis"
 	"github.com/ethereum-optimism/optimism/op-e2e/e2eutils"
@@ -600,7 +601,7 @@ func (cfg SystemConfig) Start(_opts ...SystemConfigOption) (*System, error) {
 			Format: "text",
 		},
 		PrivateKey: hexPriv(cfg.Secrets.Batcher),
-	}, sys.cfg.Loggers["batcher"])
+	}, sys.cfg.Loggers["batcher"], batchermetrics.NoopMetrics)
 	if err != nil {
 		return nil, fmt.Errorf("failed to setup batch submitter: %w", err)
 	}

op-node/rollup/derive/channel_out.go

@@ -76,7 +76,7 @@ func (co *ChannelOut) AddBlock(block *types.Block) (uint64, error) {
 		return 0, errors.New("already closed")
 	}
 
-	batch, err := BlockToBatch(block)
+	batch, _, err := BlockToBatch(block)
 	if err != nil {
 		return 0, err
 	}
@@ -182,7 +182,7 @@ func (co *ChannelOut) OutputFrame(w *bytes.Buffer, maxSize uint64) (uint16, erro
 }
 
 // BlockToBatch transforms a block into a batch object that can easily be RLP encoded.
-func BlockToBatch(block *types.Block) (*BatchData, error) {
+func BlockToBatch(block *types.Block) (*BatchData, L1BlockInfo, error) {
 	opaqueTxs := make([]hexutil.Bytes, 0, len(block.Transactions()))
 	for i, tx := range block.Transactions() {
 		if tx.Type() == types.DepositTxType {
@@ -190,17 +190,17 @@ func BlockToBatch(block *types.Block) (*BatchData, error) {
 		}
 		otx, err := tx.MarshalBinary()
 		if err != nil {
-			return nil, fmt.Errorf("could not encode tx %v in block %v: %w", i, tx.Hash(), err)
+			return nil, L1BlockInfo{}, fmt.Errorf("could not encode tx %v in block %v: %w", i, tx.Hash(), err)
 		}
 		opaqueTxs = append(opaqueTxs, otx)
 	}
 	l1InfoTx := block.Transactions()[0]
 	if l1InfoTx.Type() != types.DepositTxType {
-		return nil, ErrNotDepositTx
+		return nil, L1BlockInfo{}, ErrNotDepositTx
 	}
 	l1Info, err := L1InfoDepositTxData(l1InfoTx.Data())
 	if err != nil {
-		return nil, fmt.Errorf("could not parse the L1 Info deposit: %w", err)
+		return nil, l1Info, fmt.Errorf("could not parse the L1 Info deposit: %w", err)
 	}
 
 	return &BatchData{
@@ -211,7 +211,7 @@ func BlockToBatch(block *types.Block) (*BatchData, error) {
 			Timestamp:    block.Time(),
 			Transactions: opaqueTxs,
 		},
-	}, nil
+	}, l1Info, nil
 }
 
 // ForceCloseTxData generates the transaction data for a transaction which will force close

op-node/rollup/derive/engine_queue_test.go

@@ -216,17 +216,17 @@ func TestEngineQueue_Finalize(t *testing.T) {
 	eng.ExpectL2BlockRefByHash(refF0.ParentHash, refE1, nil)
 
 	// meet previous safe, counts 1/2
-	l1F.ExpectL1BlockRefByNumber(refE.Number, refE, nil)
+	l1F.ExpectL1BlockRefByHash(refE.Hash, refE, nil)
 	eng.ExpectL2BlockRefByHash(refE1.ParentHash, refE0, nil)
 	eng.ExpectL2BlockRefByHash(refE0.ParentHash, refD1, nil)
 
 	// now full seq window, inclusive
-	l1F.ExpectL1BlockRefByNumber(refD.Number, refD, nil)
+	l1F.ExpectL1BlockRefByHash(refD.Hash, refD, nil)
 	eng.ExpectL2BlockRefByHash(refD1.ParentHash, refD0, nil)
 	eng.ExpectL2BlockRefByHash(refD0.ParentHash, refC1, nil)
 
 	// now one more L1 origin
-	l1F.ExpectL1BlockRefByNumber(refC.Number, refC, nil)
+	l1F.ExpectL1BlockRefByHash(refC.Hash, refC, nil)
 	eng.ExpectL2BlockRefByHash(refC1.ParentHash, refC0, nil)
 	// parent of that origin will be considered safe
 	eng.ExpectL2BlockRefByHash(refC0.ParentHash, refB1, nil)
@@ -450,17 +450,17 @@ func TestEngineQueue_ResetWhenUnsafeOriginNotCanonical(t *testing.T) {
 	eng.ExpectL2BlockRefByHash(refF0.ParentHash, refE1, nil)
 
 	// meet previous safe, counts 1/2
-	l1F.ExpectL1BlockRefByNumber(refE.Number, refE, nil)
+	l1F.ExpectL1BlockRefByHash(refE.Hash, refE, nil)
 	eng.ExpectL2BlockRefByHash(refE1.ParentHash, refE0, nil)
 	eng.ExpectL2BlockRefByHash(refE0.ParentHash, refD1, nil)
 
 	// now full seq window, inclusive
-	l1F.ExpectL1BlockRefByNumber(refD.Number, refD, nil)
+	l1F.ExpectL1BlockRefByHash(refD.Hash, refD, nil)
 	eng.ExpectL2BlockRefByHash(refD1.ParentHash, refD0, nil)
 	eng.ExpectL2BlockRefByHash(refD0.ParentHash, refC1, nil)
 
 	// now one more L1 origin
-	l1F.ExpectL1BlockRefByNumber(refC.Number, refC, nil)
+	l1F.ExpectL1BlockRefByHash(refC.Hash, refC, nil)
 	eng.ExpectL2BlockRefByHash(refC1.ParentHash, refC0, nil)
 	// parent of that origin will be considered safe
 	eng.ExpectL2BlockRefByHash(refC0.ParentHash, refB1, nil)
@@ -782,17 +782,17 @@ func TestVerifyNewL1Origin(t *testing.T) {
 			}
 
 			// meet previous safe, counts 1/2
-			l1F.ExpectL1BlockRefByNumber(refE.Number, refE, nil)
+			l1F.ExpectL1BlockRefByHash(refE.Hash, refE, nil)
 			eng.ExpectL2BlockRefByHash(refE1.ParentHash, refE0, nil)
 			eng.ExpectL2BlockRefByHash(refE0.ParentHash, refD1, nil)
 
 			// now full seq window, inclusive
-			l1F.ExpectL1BlockRefByNumber(refD.Number, refD, nil)
+			l1F.ExpectL1BlockRefByHash(refD.Hash, refD, nil)
 			eng.ExpectL2BlockRefByHash(refD1.ParentHash, refD0, nil)
 			eng.ExpectL2BlockRefByHash(refD0.ParentHash, refC1, nil)
 
 			// now one more L1 origin
-			l1F.ExpectL1BlockRefByNumber(refC.Number, refC, nil)
+			l1F.ExpectL1BlockRefByHash(refC.Hash, refC, nil)
 			eng.ExpectL2BlockRefByHash(refC1.ParentHash, refC0, nil)
 			// parent of that origin will be considered safe
 			eng.ExpectL2BlockRefByHash(refC0.ParentHash, refB1, nil)

op-node/rollup/derive/l2block_util.go

+package derive
+
+import (
+	"fmt"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/core/types"
+
+	"github.com/ethereum-optimism/optimism/op-node/eth"
+	"github.com/ethereum-optimism/optimism/op-node/rollup"
+)
+
+// L2BlockRefSource is a source for the generation of a L2BlockRef. E.g. a
+// *types.Block is a L2BlockRefSource.
+//
+// L2BlockToBlockRef extracts L2BlockRef from a L2BlockRefSource. The first
+// transaction of a source must be a Deposit transaction.
+type L2BlockRefSource interface {
+	Hash() common.Hash
+	ParentHash() common.Hash
+	NumberU64() uint64
+	Time() uint64
+	Transactions() types.Transactions
+}
+
+// PayloadToBlockRef extracts the essential L2BlockRef information from an L2
+// block ref source, falling back to genesis information if necessary.
+func L2BlockToBlockRef(block L2BlockRefSource, genesis *rollup.Genesis) (eth.L2BlockRef, error) {
+	hash, number := block.Hash(), block.NumberU64()
+
+	var l1Origin eth.BlockID
+	var sequenceNumber uint64
+	if number == genesis.L2.Number {
+		if hash != genesis.L2.Hash {
+			return eth.L2BlockRef{}, fmt.Errorf("expected L2 genesis hash to match L2 block at genesis block number %d: %s <> %s", genesis.L2.Number, hash, genesis.L2.Hash)
+		}
+		l1Origin = genesis.L1
+		sequenceNumber = 0
+	} else {
+		txs := block.Transactions()
+		if txs.Len() == 0 {
+			return eth.L2BlockRef{}, fmt.Errorf("l2 block is missing L1 info deposit tx, block hash: %s", hash)
+		}
+		tx := txs[0]
+		if tx.Type() != types.DepositTxType {
+			return eth.L2BlockRef{}, fmt.Errorf("first payload tx has unexpected tx type: %d", tx.Type())
+		}
+		info, err := L1InfoDepositTxData(tx.Data())
+		if err != nil {
+			return eth.L2BlockRef{}, fmt.Errorf("failed to parse L1 info deposit tx from L2 block: %w", err)
+		}
+		l1Origin = eth.BlockID{Hash: info.BlockHash, Number: info.Number}
+		sequenceNumber = info.SequenceNumber
+	}
+
+	return eth.L2BlockRef{
+		Hash:           hash,
+		Number:         number,
+		ParentHash:     block.ParentHash(),
+		Time:           block.Time(),
+		L1Origin:       l1Origin,
+		SequenceNumber: sequenceNumber,
+	}, nil
+}

op-node/rollup/sync/start.go

@@ -126,8 +126,17 @@ func FindL2Heads(ctx context.Context, cfg *rollup.Config, l1 L1Chain, l2 L2Chain
 	// then we return the last L2 block of the epoch before that as safe head.
 	// Each loop iteration we traverse a single L2 block, and we check if the L1 origins are consistent.
 	for {
-		// Fetch L1 information if we never had it, or if we do not have it for the current origin
-		if l1Block == (eth.L1BlockRef{}) || n.L1Origin.Hash != l1Block.Hash {
+		// Fetch L1 information if we never had it, or if we do not have it for the current origin.
+		// Optimization: as soon as we have a previous L1 block, try to traverse L1 by hash instead of by number, to fill the cache.
+		if n.L1Origin.Hash == l1Block.ParentHash {
+			b, err := l1.L1BlockRefByHash(ctx, n.L1Origin.Hash)
+			if err != nil {
+				// Exit, find-sync start should start over, to move to an available L1 chain with block-by-number / not-found case.
+				return nil, fmt.Errorf("failed to retrieve L1 block: %w", err)
+			}
+			l1Block = b
+			ahead = false
+		} else if l1Block == (eth.L1BlockRef{}) || n.L1Origin.Hash != l1Block.Hash {
 			b, err := l1.L1BlockRefByNumber(ctx, n.L1Origin.Number)
 			// if L2 is ahead of L1 view, then consider it a "plausible" head
 			notFound := errors.Is(err, ethereum.NotFound)

op-node/sources/l1_client.go

@@ -24,6 +24,7 @@ type L1ClientConfig struct {
 func L1ClientDefaultConfig(config *rollup.Config, trustRPC bool, kind RPCProviderKind) *L1ClientConfig {
 	// Cache 3/2 worth of sequencing window of receipts and txs
 	span := int(config.SeqWindowSize) * 3 / 2
+	fullSpan := span
 	if span > 1000 { // sanity cap. If a large sequencing window is configured, do not make the cache too large
 		span = 1000
 	}
@@ -40,7 +41,8 @@ func L1ClientDefaultConfig(config *rollup.Config, trustRPC bool, kind RPCProvide
 			MustBePostMerge:       false,
 			RPCProviderKind:       kind,
 		},
-		L1BlockRefsCacheSize: span,
+		// Not bounded by span, to cover find-sync-start range fully for speedy recovery after errors.
+		L1BlockRefsCacheSize: fullSpan,
 	}
 }
 

op-node/sources/l2_client.go

@@ -34,6 +34,7 @@ func L2ClientDefaultConfig(config *rollup.Config, trustRPC bool) *L2ClientConfig
 		span *= 12
 		span /= int(config.BlockTime)
 	}
+	fullSpan := span
 	if span > 1000 { // sanity cap. If a large sequencing window is configured, do not make the cache too large
 		span = 1000
 	}
@@ -50,7 +51,8 @@ func L2ClientDefaultConfig(config *rollup.Config, trustRPC bool) *L2ClientConfig
 			MustBePostMerge:       true,
 			RPCProviderKind:       RPCKindBasic,
 		},
-		L2BlockRefsCacheSize: span,
+		// Not bounded by span, to cover find-sync-start range fully for speedy recovery after errors.
+		L2BlockRefsCacheSize: fullSpan,
 		L1ConfigsCacheSize:   span,
 		RollupCfg:            config,
 	}

op-proposer/proposer/l2_output_submitter.go

@@ -208,6 +208,13 @@ func NewL2OutputSubmitter(cfg Config, l log.Logger) (*L2OutputSubmitter, error)
 		return nil, err
 	}
 
+	version, err := l2ooContract.Version(&bind.CallOpts{})
+	if err != nil {
+		cancel()
+		return nil, err
+	}
+	log.Info("Connected to L2OutputOracle", "address", cfg.L2OutputOracleAddr, "version", version)
+
 	parsed, err := abi.JSON(strings.NewReader(bindings.L2OutputOracleMetaData.ABI))
 	if err != nil {
 		cancel()

op-service/metrics/event.go

+package metrics
+
+import (
+	"fmt"
+
+	"github.com/prometheus/client_golang/prometheus"
+)
+
+type Event struct {
+	Total    prometheus.Counter
+	LastTime prometheus.Gauge
+}
+
+func (e *Event) Record() {
+	e.Total.Inc()
+	e.LastTime.SetToCurrentTime()
+}
+
+func NewEvent(factory Factory, ns string, name string, displayName string) Event {
+	return Event{
+		Total: factory.NewCounter(prometheus.CounterOpts{
+			Namespace: ns,
+			Name:      fmt.Sprintf("%s_total", name),
+			Help:      fmt.Sprintf("Count of %s events", displayName),
+		}),
+		LastTime: factory.NewGauge(prometheus.GaugeOpts{
+			Namespace: ns,
+			Name:      fmt.Sprintf("last_%s_unix", name),
+			Help:      fmt.Sprintf("Timestamp of last %s event", displayName),
+		}),
+	}
+}
+
+type EventVec struct {
+	Total    prometheus.CounterVec
+	LastTime prometheus.GaugeVec
+}
+
+func (e *EventVec) Record(lvs ...string) {
+	e.Total.WithLabelValues(lvs...).Inc()
+	e.LastTime.WithLabelValues(lvs...).SetToCurrentTime()
+}
+
+func NewEventVec(factory Factory, ns string, name string, displayName string, labelNames []string) EventVec {
+	return EventVec{
+		Total: *factory.NewCounterVec(prometheus.CounterOpts{
+			Namespace: ns,
+			Name:      fmt.Sprintf("%s_total", name),
+			Help:      fmt.Sprintf("Count of %s events", displayName),
+		}, labelNames),
+		LastTime: *factory.NewGaugeVec(prometheus.GaugeOpts{
+			Namespace: ns,
+			Name:      fmt.Sprintf("last_%s_unix", name),
+			Help:      fmt.Sprintf("Timestamp of last %s event", displayName),
+		},
+			labelNames),
+	}
+}

op-service/metrics/ref_metrics.go

+package metrics
+
+import (
+	"encoding/binary"
+	"time"
+
+	"github.com/ethereum-optimism/optimism/op-node/eth"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/prometheus/client_golang/prometheus"
+)
+
+type RefMetricer interface {
+	RecordRef(layer string, name string, num uint64, timestamp uint64, h common.Hash)
+	RecordL1Ref(name string, ref eth.L1BlockRef)
+	RecordL2Ref(name string, ref eth.L2BlockRef)
+}
+
+// RefMetrics provides block reference metrics. It's a metrics module that's
+// supposed to be embedded into a service metrics type. The service metrics type
+// should set the full namespace and create the factory before calling
+// NewRefMetrics.
+type RefMetrics struct {
+	RefsNumber  *prometheus.GaugeVec
+	RefsTime    *prometheus.GaugeVec
+	RefsHash    *prometheus.GaugeVec
+	RefsSeqNr   *prometheus.GaugeVec
+	RefsLatency *prometheus.GaugeVec
+	// hash of the last seen block per name, so we don't reduce/increase latency on updates of the same data,
+	// and only count the first occurrence
+	LatencySeen map[string]common.Hash
+}
+
+var _ RefMetricer = (*RefMetrics)(nil)
+
+// MakeRefMetrics returns a new RefMetrics, initializing its prometheus fields
+// using factory. It is supposed to be used inside the construtors of metrics
+// structs for any op service after the full namespace and factory have been
+// setup.
+//
+// ns is the fully qualified namespace, e.g. "op_node_default".
+func MakeRefMetrics(ns string, factory Factory) RefMetrics {
+	return RefMetrics{
+		RefsNumber: factory.NewGaugeVec(prometheus.GaugeOpts{
+			Namespace: ns,
+			Name:      "refs_number",
+			Help:      "Gauge representing the different L1/L2 reference block numbers",
+		}, []string{
+			"layer",
+			"type",
+		}),
+		RefsTime: factory.NewGaugeVec(prometheus.GaugeOpts{
+			Namespace: ns,
+			Name:      "refs_time",
+			Help:      "Gauge representing the different L1/L2 reference block timestamps",
+		}, []string{
+			"layer",
+			"type",
+		}),
+		RefsHash: factory.NewGaugeVec(prometheus.GaugeOpts{
+			Namespace: ns,
+			Name:      "refs_hash",
+			Help:      "Gauge representing the different L1/L2 reference block hashes truncated to float values",
+		}, []string{
+			"layer",
+			"type",
+		}),
+		RefsSeqNr: factory.NewGaugeVec(prometheus.GaugeOpts{
+			Namespace: ns,
+			Name:      "refs_seqnr",
+			Help:      "Gauge representing the different L2 reference sequence numbers",
+		}, []string{
+			"type",
+		}),
+		RefsLatency: factory.NewGaugeVec(prometheus.GaugeOpts{
+			Namespace: ns,
+			Name:      "refs_latency",
+			Help:      "Gauge representing the different L1/L2 reference block timestamps minus current time, in seconds",
+		}, []string{
+			"layer",
+			"type",
+		}),
+		LatencySeen: make(map[string]common.Hash),
+	}
+}
+
+func (m *RefMetrics) RecordRef(layer string, name string, num uint64, timestamp uint64, h common.Hash) {
+	m.RefsNumber.WithLabelValues(layer, name).Set(float64(num))
+	if timestamp != 0 {
+		m.RefsTime.WithLabelValues(layer, name).Set(float64(timestamp))
+		// only meter the latency when we first see this hash for the given label name
+		if m.LatencySeen[name] != h {
+			m.LatencySeen[name] = h
+			m.RefsLatency.WithLabelValues(layer, name).Set(float64(timestamp) - (float64(time.Now().UnixNano()) / 1e9))
+		}
+	}
+	// we map the first 8 bytes to a float64, so we can graph changes of the hash to find divergences visually.
+	// We don't do math.Float64frombits, just a regular conversion, to keep the value within a manageable range.
+	m.RefsHash.WithLabelValues(layer, name).Set(float64(binary.LittleEndian.Uint64(h[:])))
+}
+
+func (m *RefMetrics) RecordL1Ref(name string, ref eth.L1BlockRef) {
+	m.RecordRef("l1", name, ref.Number, ref.Time, ref.Hash)
+}
+
+func (m *RefMetrics) RecordL2Ref(name string, ref eth.L2BlockRef) {
+	m.RecordRef("l2", name, ref.Number, ref.Time, ref.Hash)
+	m.RecordRef("l1_origin", name, ref.L1Origin.Number, 0, ref.L1Origin.Hash)
+	m.RefsSeqNr.WithLabelValues(name).Set(float64(ref.SequenceNumber))
+}
+
+// NoopRefMetrics can be embedded in a noop version of a metric implementation
+// to have a noop RefMetricer.
+type NoopRefMetrics struct{}
+
+func (*NoopRefMetrics) RecordRef(string, string, uint64, uint64, common.Hash) {}
+func (*NoopRefMetrics) RecordL1Ref(string, eth.L1BlockRef)                    {}
+func (*NoopRefMetrics) RecordL2Ref(string, eth.L2BlockRef)                    {}

op-service/txmgr/txmgr.go

@@ -251,11 +251,22 @@ func (m *SimpleTxManager) IncreaseGasPrice(ctx context.Context, tx *types.Transa
 	thresholdFeeCap := new(big.Int).Mul(priceBumpPercent, tx.GasFeeCap())
 	thresholdFeeCap = thresholdFeeCap.Div(thresholdFeeCap, oneHundred)
 	if tx.GasFeeCapIntCmp(gasFeeCap) >= 0 {
+		if reusedTip {
 			m.l.Debug("Reusing the previous fee cap", "previous", tx.GasFeeCap(), "suggested", gasFeeCap)
 			gasFeeCap = tx.GasFeeCap()
 			reusedFeeCap = true
+		} else {
+			m.l.Debug("Overriding the fee cap to enforce a price bump because we increased the tip", "previous", tx.GasFeeCap(), "suggested", gasFeeCap, "new", thresholdFeeCap)
+			gasFeeCap = thresholdFeeCap
+		}
 	} else if thresholdFeeCap.Cmp(gasFeeCap) > 0 {
+		if reusedTip {
+			// TODO (CLI-3620): Increase the basefee then recompute the feecap
+			m.l.Warn("Overriding the fee cap to enforce a price bump without increasing the tip. Will likely result in ErrReplacementUnderpriced",
+				"previous", tx.GasFeeCap(), "suggested", gasFeeCap, "new", thresholdFeeCap)
+		} else {
 			m.l.Debug("Overriding the fee cap to enforce a price bump", "previous", tx.GasFeeCap(), "suggested", gasFeeCap, "new", thresholdFeeCap)
+		}
 		gasFeeCap = thresholdFeeCap
 	}
 

op-service/txmgr/txmgr_test.go

@@ -628,6 +628,84 @@ func TestIncreaseGasPriceEnforcesMinBump(t *testing.T) {
 		baseFee: big.NewInt(460),
 	}
 
+	mgr := &SimpleTxManager{
+		Config: Config{
+			ResubmissionTimeout:       time.Second,
+			ReceiptQueryInterval:      50 * time.Millisecond,
+			NumConfirmations:          1,
+			SafeAbortNonceTooLowCount: 3,
+			Signer: func(ctx context.Context, from common.Address, tx *types.Transaction) (*types.Transaction, error) {
+				return tx, nil
+			},
+			From: common.Address{},
+		},
+		name:    "TEST",
+		backend: &borkedBackend,
+		l:       testlog.Logger(t, log.LvlTrace),
+	}
+
+	tx := types.NewTx(&types.DynamicFeeTx{
+		GasTipCap: big.NewInt(100),
+		GasFeeCap: big.NewInt(1000),
+	})
+
+	ctx := context.Background()
+	newTx, err := mgr.IncreaseGasPrice(ctx, tx)
+	require.NoError(t, err)
+	require.True(t, newTx.GasFeeCap().Cmp(tx.GasFeeCap()) > 0, "new tx fee cap must be larger")
+	require.True(t, newTx.GasTipCap().Cmp(tx.GasTipCap()) > 0, "new tx tip must be larger")
+}
+
+// TestIncreaseGasPriceEnforcesMinBumpForBothOnTipIncrease asserts that if the gasTip goes up,
+// but the baseFee doesn't, both values are increased by 10%
+func TestIncreaseGasPriceEnforcesMinBumpForBothOnTipIncrease(t *testing.T) {
+	t.Parallel()
+
+	borkedBackend := failingBackend{
+		gasTip:  big.NewInt(101),
+		baseFee: big.NewInt(440),
+	}
+
+	mgr := &SimpleTxManager{
+		Config: Config{
+			ResubmissionTimeout:       time.Second,
+			ReceiptQueryInterval:      50 * time.Millisecond,
+			NumConfirmations:          1,
+			SafeAbortNonceTooLowCount: 3,
+			Signer: func(ctx context.Context, from common.Address, tx *types.Transaction) (*types.Transaction, error) {
+				return tx, nil
+			},
+			From: common.Address{},
+		},
+		name:    "TEST",
+		backend: &borkedBackend,
+		l:       testlog.Logger(t, log.LvlCrit),
+	}
+
+	tx := types.NewTx(&types.DynamicFeeTx{
+		GasTipCap: big.NewInt(100),
+		GasFeeCap: big.NewInt(1000),
+	})
+
+	ctx := context.Background()
+	newTx, err := mgr.IncreaseGasPrice(ctx, tx)
+	require.NoError(t, err)
+	require.True(t, newTx.GasFeeCap().Cmp(tx.GasFeeCap()) > 0, "new tx fee cap must be larger")
+	require.True(t, newTx.GasTipCap().Cmp(tx.GasTipCap()) > 0, "new tx tip must be larger")
+}
+
+// TestIncreaseGasPriceEnforcesMinBumpForBothOnBaseFeeIncrease asserts that if the baseFee goes up,
+// but the tip doesn't, both values are increased by 10%
+// TODO(CLI-3620): This test will fail until we implemented CLI-3620.
+func TestIncreaseGasPriceEnforcesMinBumpForBothOnBaseFeeIncrease(t *testing.T) {
+	t.Skip("Failing until CLI-3620 is implemented")
+	t.Parallel()
+
+	borkedBackend := failingBackend{
+		gasTip:  big.NewInt(99),
+		baseFee: big.NewInt(460),
+	}
+
 	mgr := &SimpleTxManager{
 		Config: Config{
 			ResubmissionTimeout:       time.Second,

packages/contracts-bedrock/.gas-snapshot

@@ -141,6 +141,7 @@ L2ERC721Bridge_Test:test_bridgeERC721_succeeds() (gas: 144643)
 L2ERC721Bridge_Test:test_bridgeERC721_wrongOwner_reverts() (gas: 29258)
 L2ERC721Bridge_Test:test_constructor_succeeds() (gas: 10110)
 L2ERC721Bridge_Test:test_finalizeBridgeERC721_alreadyExists_reverts() (gas: 29128)
+L2ERC721Bridge_Test:test_finalizeBridgeERC721_interfaceNotCompliant_reverts() (gas: 236012)
 L2ERC721Bridge_Test:test_finalizeBridgeERC721_notFromRemoteMessenger_reverts() (gas: 19874)
 L2ERC721Bridge_Test:test_finalizeBridgeERC721_notViaLocalMessenger_reverts() (gas: 16104)
 L2ERC721Bridge_Test:test_finalizeBridgeERC721_selfToken_reverts() (gas: 17659)

packages/contracts-bedrock/contracts/L1/OptimismPortal.sol

@@ -49,7 +49,7 @@ contract OptimismPortal is Initializable, ResourceMetering, Semver {
     L2OutputOracle public immutable L2_ORACLE;
 
     /**
-     * @notice Address that has the ability to pause and unpause deposits and withdrawals.
+     * @notice Address that has the ability to pause and unpause withdrawals.
      */
     address public immutable GUARDIAN;
 

packages/contracts-bedrock/contracts/test/L2ERC721Bridge.t.sol

@@ -278,6 +278,33 @@ contract L2ERC721Bridge_Test is Messenger_Initializer {
         assertEq(localToken.ownerOf(tokenId), alice);
     }
 
+    function test_finalizeBridgeERC721_interfaceNotCompliant_reverts() external {
+        // Create a non-compliant token
+        NonCompliantERC721 nonCompliantToken = new NonCompliantERC721(alice);
+
+        // Bridge the non-compliant token.
+        vm.prank(alice);
+        bridge.bridgeERC721(address(nonCompliantToken), address(0x01), tokenId, 1234, hex"5678");
+
+        // Attempt to finalize the withdrawal. Should revert because the token does not claim
+        // to be compliant with the `IOptimismMintableERC721` interface.
+        vm.mockCall(
+            address(L2Messenger),
+            abi.encodeWithSelector(L2Messenger.xDomainMessageSender.selector),
+            abi.encode(otherBridge)
+        );
+        vm.prank(address(L2Messenger));
+        vm.expectRevert("L2ERC721Bridge: local token interface is not compliant");
+        bridge.finalizeBridgeERC721(
+            address(address(nonCompliantToken)),
+            address(address(0x01)),
+            alice,
+            alice,
+            tokenId,
+            hex"5678"
+        );
+    }
+
     function test_finalizeBridgeERC721_notViaLocalMessenger_reverts() external {
         // Finalize a withdrawal.
         vm.prank(alice);
@@ -349,3 +376,33 @@ contract L2ERC721Bridge_Test is Messenger_Initializer {
         );
     }
 }
+
+/**
+ * @dev A non-compliant ERC721 token that does not implement the full ERC721 interface.
+ *
+ * This is used to test that the bridge will revert if the token does not claim to support
+ * the ERC721 interface.
+ */
+contract NonCompliantERC721 {
+    address internal immutable owner;
+
+    constructor(address _owner) {
+        owner = _owner;
+    }
+
+    function ownerOf(uint256) external view returns (address) {
+        return owner;
+    }
+
+    function remoteToken() external pure returns (address) {
+        return address(0x01);
+    }
+
+    function burn(address, uint256) external {
+        // Do nothing.
+    }
+
+    function supportsInterface(bytes4) external pure returns (bool) {
+        return false;
+    }
+}

packages/contracts-bedrock/deploy-config/devnetL1.json

@@ -20,6 +20,7 @@
   "sequencerFeeVaultRecipient": "0xfabb0ac9d68b0b445fb7357272ff202c5651694a",
   "proxyAdminOwner": "0xBcd4042DE499D14e55001CcbB24a551F3b954096",
   "finalSystemOwner": "0xBcd4042DE499D14e55001CcbB24a551F3b954096",
+  "portalGuardian": "0xBcd4042DE499D14e55001CcbB24a551F3b954096",
   "controller": "0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266",
   "finalizationPeriodSeconds": 2,
   "deploymentWaitConfirmations": 1,

packages/contracts-bedrock/deploy-config/final-migration-rehearsal.json

 {
   "finalSystemOwner": "0x62790eFcB3a5f3A5D398F95B47930A9Addd83807",
+  "portalGuardian": "0x62790eFcB3a5f3A5D398F95B47930A9Addd83807",
   "controller": "0x2d30335B0b807bBa1682C487BaAFD2Ad6da5D675",
 
   "l1StartingBlockTag": "0x4104895a540d87127ff11eef0d51d8f63ce00a6fc211db751a45a4b3a61a9c83",

packages/contracts-bedrock/deploy-config/getting-started.json

@@ -2,6 +2,7 @@
   "numDeployConfirmations": 1,
 
   "finalSystemOwner": "ADMIN",
+  "portalGuardian": "ADMIN",
   "controller": "ADMIN",
 
   "l1StartingBlockTag": "BLOCKHASH",

packages/contracts-bedrock/deploy-config/goerli-forked.json

 {
   "finalSystemOwner": "0x62790eFcB3a5f3A5D398F95B47930A9Addd83807",
+  "portalGuardian": "0x62790eFcB3a5f3A5D398F95B47930A9Addd83807",
   "controller": "0x2d30335B0b807bBa1682C487BaAFD2Ad6da5D675",
 
   "l1StartingBlockTag": "0x4104895a540d87127ff11eef0d51d8f63ce00a6fc211db751a45a4b3a61a9c83",

packages/contracts-bedrock/deploy-config/goerli.json

@@ -2,6 +2,7 @@
   "numDeployConfirmations": 1,
 
   "finalSystemOwner": "0xBc1233d0C3e6B5d53Ab455cF65A6623F6dCd7e4f",
+  "portalGuardian": "0xBc1233d0C3e6B5d53Ab455cF65A6623F6dCd7e4f",
   "controller": "0xBc1233d0C3e6B5d53Ab455cF65A6623F6dCd7e4f",
 
   "l1StartingBlockTag": "0x6ffc1bf3754c01f6bb9fe057c1578b87a8571ce2e9be5ca14bace6eccfd336c7",

packages/contracts-bedrock/deploy-config/hardhat.json

 {
   "finalSystemOwner": "0x9965507D1a55bcC2695C58ba16FB37d819B0A4dc",
+  "portalGuardian": "0x9965507D1a55bcC2695C58ba16FB37d819B0A4dc",
   "controller": "0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266",
 
   "l1StartingBlockTag": "earliest",

packages/contracts-bedrock/deploy-config/internal-devnet.json

 {
   "finalSystemOwner": "0x858F0751ef8B4067f0d2668C076BDB50a8549fbF",
+  "portalGuardian": "0x858F0751ef8B4067f0d2668C076BDB50a8549fbF",
   "controller": "0x2d30335B0b807bBa1682C487BaAFD2Ad6da5D675",
 
   "l1StartingBlockTag": "0x19c7e6b18fe156e45f4cfef707294fd8f079fa9c30a7b7cd6ec1ce3682ec6a2e",

packages/contracts-bedrock/deploy/013-OptimismPortalImpl.ts

@@ -17,13 +17,11 @@ const deployFn: DeployFunction = async (hre) => {
     'L2OutputOracleProxy'
   )
 
-  const finalSystemOwner = hre.deployConfig.finalSystemOwner
-  const finalSystemOwnerCode = await hre.ethers.provider.getCode(
-    finalSystemOwner
-  )
-  if (finalSystemOwnerCode === '0x') {
+  const portalGuardian = hre.deployConfig.portalGuardian
+  const portalGuardianCode = await hre.ethers.provider.getCode(portalGuardian)
+  if (portalGuardianCode === '0x') {
     console.log(
-      `WARNING: setting OptimismPortal.GUARDIAN to ${finalSystemOwner} and it has no code`
+      `WARNING: setting OptimismPortal.GUARDIAN to ${portalGuardian} and it has no code`
     )
     if (!isLiveDeployer) {
       throw new Error(
@@ -35,13 +33,13 @@ const deployFn: DeployFunction = async (hre) => {
   // Deploy the OptimismPortal implementation as paused to
   // ensure that users do not interact with it and instead
   // interact with the proxied contract.
-  // The `finalSystemOwner` is set at the GUARDIAN.
+  // The `portalGuardian` is set at the GUARDIAN.
   await deploy({
     hre,
     name: 'OptimismPortal',
     args: [
       L2OutputOracleProxy.address,
-      finalSystemOwner,
+      portalGuardian,
       true, // paused
     ],
     postDeployAction: async (contract) => {
@@ -53,7 +51,7 @@ const deployFn: DeployFunction = async (hre) => {
       await assertContractVariable(
         contract,
         'GUARDIAN',
-        hre.deployConfig.finalSystemOwner
+        hre.deployConfig.portalGuardian
       )
     },
   })

packages/contracts-bedrock/deploy/020-SystemDictatorSteps-1.ts

@@ -109,7 +109,7 @@ const deployFn: DeployFunction = async (hre) => {
         const owner = await AddressManager.owner()
         return owner === SystemDictator.address
       },
-      30000,
+      5000,
       1000
     )
   } else {
@@ -149,7 +149,7 @@ const deployFn: DeployFunction = async (hre) => {
         })
         return owner === SystemDictator.address
       },
-      30000,
+      5000,
       1000
     )
   } else {
@@ -187,7 +187,7 @@ const deployFn: DeployFunction = async (hre) => {
         })
         return owner === SystemDictator.address
       },
-      30000,
+      5000,
       1000
     )
   } else {

packages/contracts-bedrock/deploy/021-SystemDictatorSteps-2.ts

@@ -203,7 +203,7 @@ const deployFn: DeployFunction = async (hre) => {
       async () => {
         return SystemDictator.dynamicConfigSet()
       },
-      30000,
+      5000,
       1000
     )
   }
@@ -316,7 +316,7 @@ const deployFn: DeployFunction = async (hre) => {
         const paused = await OptimismPortal.paused()
         return !paused
       },
-      30000,
+      5000,
       1000
     )
 
@@ -345,7 +345,7 @@ const deployFn: DeployFunction = async (hre) => {
       async () => {
         return SystemDictator.finalized()
       },
-      30000,
+      5000,
       1000
     )
 

packages/contracts-bedrock/src/deploy-config.ts

@@ -14,6 +14,12 @@ interface RequiredDeployConfig {
    */
   finalSystemOwner?: string
 
+  /**
+   * Address that is deployed as the GUARDIAN in the OptimismPortal. Has the
+   * ability to pause withdrawals.
+   */
+  portalGuardian: string
+
   /**
    * Address that will own the entire system on L1 during the deployment process. This address will
    * not own the system after the deployment is complete, ownership will be transferred to the
@@ -181,6 +187,9 @@ export const deployConfigSpec: {
   finalSystemOwner: {
     type: 'address',
   },
+  portalGuardian: {
+    type: 'address',
+  },
   controller: {
     type: 'address',
   },

patches/@changesets+cli+2.26.0.patch

+diff --git a/node_modules/@changesets/cli/dist/cli.cjs.dev.js b/node_modules/@changesets/cli/dist/cli.cjs.dev.js
+index b158219..6fdfb6e 100644
+--- a/node_modules/@changesets/cli/dist/cli.cjs.dev.js
++++ b/node_modules/@changesets/cli/dist/cli.cjs.dev.js
+@@ -937,7 +937,7 @@ async function publishPackages({
+ }) {
+   const packagesByName = new Map(packages.map(x => [x.packageJson.name, x]));
+   const publicPackages = packages.filter(pkg => !pkg.packageJson.private);
+-  const unpublishedPackagesInfo = await getUnpublishedPackages(publicPackages, preState);
++  const unpublishedPackagesInfo = await getUnpublishedPackages(packages, preState);
+
+   if (unpublishedPackagesInfo.length === 0) {
+     return [];
+@@ -957,20 +957,27 @@ async function publishAPackage(pkg, access, twoFactorState, tag) {
+   const {
+     name,
+     version,
+-    publishConfig
++    publishConfig,
++    private: isPrivate
+   } = pkg.packageJson;
+   const localAccess = publishConfig === null || publishConfig === void 0 ? void 0 : publishConfig.access;
+-  logger.info(`Publishing ${chalk__default['default'].cyan(`"${name}"`)} at ${chalk__default['default'].green(`"${version}"`)}`);
+-  const publishDir = publishConfig !== null && publishConfig !== void 0 && publishConfig.directory ? path.join(pkg.dir, publishConfig.directory) : pkg.dir;
+-  const publishConfirmation = await publish(name, {
+-    cwd: publishDir,
+-    access: localAccess || access,
+-    tag
+-  }, twoFactorState);
++  let published;
++  if (!isPrivate) {
++    logger.info(`Publishing ${chalk__default['default'].cyan(`"${name}"`)} at ${chalk__default['default'].green(`"${version}"`)}`);
++    const publishDir = publishConfig !== null && publishConfig !== void 0 && publishConfig.directory ? path.join(pkg.dir, publishConfig.directory) : pkg.dir;
++    const publishConfirmation = await publish(name, {
++      cwd: publishDir,
++      access: localAccess || access,
++      tag
++    }, twoFactorState);
++    published = publishConfirmation.published;
++  } else {
++    published = true;
++  }
+   return {
+     name,
+     newVersion: version,
+-    published: publishConfirmation.published
++    published
+   };
+ }
+
+@@ -1140,8 +1147,13 @@ async function tagPublish(tool, packageReleases, cwd) {
+   if (tool !== "root") {
+     for (const pkg of packageReleases) {
+       const tag = `${pkg.name}@${pkg.newVersion}`;
+-      logger.log("New tag: ", tag);
+-      await git.tag(tag, cwd);
++      const allTags = await git.getAllTags(cwd);
++      if (allTags.has(tag)) {
++        logger.log("Skipping existing tag: ", tag);
++      } else {
++        logger.log("New tag: ", tag);
++        await git.tag(tag, cwd);
++      }
+     }
+   } else {
+     const tag = `v${packageReleases[0].newVersion}`;

specs/assets/components.svg

 <?xml version="1.0" encoding="UTF-8"?>
 <!-- Do not edit this file with editors other than diagrams.net -->
 <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
-<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" width="441px" height="351px" viewBox="-0.5 -0.5 441 351" content="&lt;mxfile host=&quot;app.diagrams.net&quot; modified=&quot;2022-04-04T03:06:14.911Z&quot; agent=&quot;5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.60 Safari/537.36&quot; version=&quot;17.2.5&quot; etag=&quot;zDZnQrrUn3-KehqiH5ap&quot; type=&quot;google&quot;&gt;&lt;diagram id=&quot;tywBRjScRQLhh2Yu3ye-&quot;&gt;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&lt;/diagram&gt;&lt;/mxfile&gt;" style="background-color: rgb(255, 255, 255);"><defs><linearGradient x1="0%" y1="0%" x2="100%" y2="0%" id="mx-gradient-f8cecc-1-7ea6e0-1-e-0"><stop offset="0%" style="stop-color: rgb(248, 206, 204); stop-opacity: 1;"/><stop offset="100%" style="stop-color: rgb(126, 166, 224); stop-opacity: 1;"/></linearGradient></defs><g><rect x="0" y="0" width="440" height="110" fill="#fff2cc" stroke="#d6b656" pointer-events="all"/><rect x="10" y="10" width="120" height="60" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 40px; margin-left: 11px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">DepositFeed</div></div></div></foreignObject><text x="70" y="44" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">DepositFeed</text></switch></g><rect x="270" y="10" width="120" height="60" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 40px; margin-left: 271px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">L2OutputOracle</div></div></div></foreignObject><text x="330" y="44" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">L2OutputOracle</text></switch></g><rect x="0" y="110" width="440" height="240" fill="#d5e8d4" stroke="#82b366" pointer-events="all"/><path d="M 70 210 L 70 263.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 70 268.88 L 66.5 261.88 L 70 263.63 L 73.5 261.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><path d="M 100 165 L 183.63 165" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 188.88 165 L 181.88 168.5 L 183.63 165 L 181.88 161.5 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><path d="M 100 195 L 183.63 195" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 188.88 195 L 181.88 198.5 L 183.63 195 L 181.88 191.5 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><rect x="40" y="150" width="60" height="60" fill="url(#mx-gradient-f8cecc-1-7ea6e0-1-e-0)" stroke="#b85450" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 58px; height: 1px; padding-top: 180px; margin-left: 41px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">Rollup <br />Node</div></div></div></foreignObject><text x="70" y="184" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Rollup...</text></switch></g><path d="M 260 150 L 260 110 L 200 110 L 200 76.37" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 200 71.12 L 203.5 78.12 L 200 76.37 L 196.5 78.12 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><rect x="190" y="150" width="140" height="30" fill="#f8cecc" stroke="#b85450" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 138px; height: 1px; padding-top: 165px; margin-left: 191px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">Batch Submitter</div></div></div></foreignObject><text x="260" y="169" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Batch Submitter</text></switch></g><rect x="10" y="270" width="120" height="60" fill="url(#mx-gradient-f8cecc-1-7ea6e0-1-e-0)" stroke="#b85450" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 300px; margin-left: 11px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">L2 Execution Engine<br />(L2 Geth)</div></div></div></foreignObject><text x="70" y="304" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">L2 Execution Engine...</text></switch></g><rect x="140" y="10" width="120" height="60" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 40px; margin-left: 141px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">BatchInbox</div></div></div></foreignObject><text x="200" y="44" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">BatchInbox</text></switch></g><rect x="400" y="80" width="30" height="20" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 28px; height: 1px; padding-top: 90px; margin-left: 401px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">L1</div></div></div></foreignObject><text x="415" y="94" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">L1</text></switch></g><rect x="400" y="320" width="30" height="20" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 28px; height: 1px; padding-top: 330px; margin-left: 401px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">L2</div></div></div></foreignObject><text x="415" y="334" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">L2</text></switch></g><path d="M 330 195 L 360 195 L 360 76.37" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 360 71.12 L 363.5 78.12 L 360 76.37 L 356.5 78.12 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><rect x="190" y="180" width="140" height="30" fill="#f8cecc" stroke="#b85450" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 138px; height: 1px; padding-top: 195px; margin-left: 191px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">Output Submitter</div></div></div></foreignObject><text x="260" y="199" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Output Submitter</text></switch></g><rect x="220" y="240" width="80" height="30" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 78px; height: 1px; padding-top: 255px; margin-left: 221px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">Legend</div></div></div></foreignObject><text x="260" y="259" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Legend</text></switch></g><rect x="220" y="270" width="80" height="30" fill="#f8cecc" stroke="#b85450" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 78px; height: 1px; padding-top: 285px; margin-left: 221px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">Sequencer</div></div></div></foreignObject><text x="260" y="289" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Sequencer</text></switch></g><rect x="220" y="300" width="80" height="30" fill="#dae8fc" stroke="#6c8ebf" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 78px; height: 1px; padding-top: 315px; margin-left: 221px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">Verifier</div></div></div></foreignObject><text x="260" y="319" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Verifier</text></switch></g><path d="M 70 70 L 70 143.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 70 148.88 L 66.5 141.88 L 70 143.63 L 73.5 141.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/></g><switch><g requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"/><a transform="translate(0,-5)" xlink:href="https://www.diagrams.net/doc/faq/svg-export-text-problems" target="_blank"><text text-anchor="middle" font-size="10px" x="50%" y="100%">Text is not SVG - cannot display</text></a></switch></svg>
\ No newline at end of file
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" width="441px" height="351px" viewBox="-0.5 -0.5 441 351" content="&lt;mxfile host=&quot;Electron&quot; modified=&quot;2023-03-20T08:57:38.419Z&quot; agent=&quot;5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) draw.io/20.8.16 Chrome/106.0.5249.199 Electron/21.4.0 Safari/537.36&quot; etag=&quot;naeFneXxkMTGqgBSgGby&quot; version=&quot;20.8.16&quot; type=&quot;device&quot;&gt;&lt;diagram id=&quot;tywBRjScRQLhh2Yu3ye-&quot; name=&quot;Page-1&quot;&gt;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&lt;/diagram&gt;&lt;/mxfile&gt;"><defs><linearGradient x1="0%" y1="0%" x2="100%" y2="0%" id="mx-gradient-f8cecc-1-7ea6e0-1-e-0"><stop offset="0%" style="stop-color: rgb(248, 206, 204); stop-opacity: 1;"/><stop offset="100%" style="stop-color: rgb(126, 166, 224); stop-opacity: 1;"/></linearGradient></defs><g><rect x="0" y="0" width="440" height="110" fill="#fff2cc" stroke="#d6b656" pointer-events="all"/><rect x="10" y="10" width="120" height="60" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 40px; margin-left: 11px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">OptimismPortal</div></div></div></foreignObject><text x="70" y="44" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">OptimismPortal</text></switch></g><rect x="270" y="10" width="120" height="60" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 40px; margin-left: 271px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">L2OutputOracle</div></div></div></foreignObject><text x="330" y="44" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">L2OutputOracle</text></switch></g><rect x="0" y="110" width="440" height="240" fill="#d5e8d4" stroke="#82b366" pointer-events="all"/><path d="M 70 210 L 70 263.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 70 268.88 L 66.5 261.88 L 70 263.63 L 73.5 261.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><path d="M 100 165 L 183.63 165" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 188.88 165 L 181.88 168.5 L 183.63 165 L 181.88 161.5 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><path d="M 100 195 L 183.63 195" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 188.88 195 L 181.88 198.5 L 183.63 195 L 181.88 191.5 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><rect x="40" y="150" width="60" height="60" fill="url(#mx-gradient-f8cecc-1-7ea6e0-1-e-0)" stroke="#b85450" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 58px; height: 1px; padding-top: 180px; margin-left: 41px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">Rollup <br />Node</div></div></div></foreignObject><text x="70" y="184" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Rollup...</text></switch></g><path d="M 260 150 L 260 110 L 200 110 L 200 76.37" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 200 71.12 L 203.5 78.12 L 200 76.37 L 196.5 78.12 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><rect x="190" y="150" width="140" height="30" fill="#f8cecc" stroke="#b85450" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 138px; height: 1px; padding-top: 165px; margin-left: 191px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">Batch Submitter</div></div></div></foreignObject><text x="260" y="169" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Batch Submitter</text></switch></g><rect x="10" y="270" width="120" height="60" fill="url(#mx-gradient-f8cecc-1-7ea6e0-1-e-0)" stroke="#b85450" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 300px; margin-left: 11px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">L2 Execution Engine<br />(L2 Geth)</div></div></div></foreignObject><text x="70" y="304" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">L2 Execution Engine...</text></switch></g><rect x="140" y="10" width="120" height="60" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 40px; margin-left: 141px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">BatchInbox</div></div></div></foreignObject><text x="200" y="44" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">BatchInbox</text></switch></g><rect x="400" y="80" width="30" height="20" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 28px; height: 1px; padding-top: 90px; margin-left: 401px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">L1</div></div></div></foreignObject><text x="415" y="94" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">L1</text></switch></g><rect x="400" y="320" width="30" height="20" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 28px; height: 1px; padding-top: 330px; margin-left: 401px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">L2</div></div></div></foreignObject><text x="415" y="334" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">L2</text></switch></g><path d="M 330 195 L 360 195 L 360 76.37" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 360 71.12 L 363.5 78.12 L 360 76.37 L 356.5 78.12 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><rect x="190" y="180" width="140" height="30" fill="#f8cecc" stroke="#b85450" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 138px; height: 1px; padding-top: 195px; margin-left: 191px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">Output Submitter</div></div></div></foreignObject><text x="260" y="199" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Output Submitter</text></switch></g><rect x="220" y="240" width="80" height="30" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 78px; height: 1px; padding-top: 255px; margin-left: 221px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">Legend</div></div></div></foreignObject><text x="260" y="259" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Legend</text></switch></g><rect x="220" y="270" width="80" height="30" fill="#f8cecc" stroke="#b85450" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 78px; height: 1px; padding-top: 285px; margin-left: 221px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">Sequencer</div></div></div></foreignObject><text x="260" y="289" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Sequencer</text></switch></g><rect x="220" y="300" width="80" height="30" fill="#dae8fc" stroke="#6c8ebf" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 78px; height: 1px; padding-top: 315px; margin-left: 221px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">Verifier</div></div></div></foreignObject><text x="260" y="319" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Verifier</text></switch></g><path d="M 70 70 L 70 143.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 70 148.88 L 66.5 141.88 L 70 143.63 L 73.5 141.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/></g><switch><g requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"/><a transform="translate(0,-5)" xlink:href="https://www.diagrams.net/doc/faq/svg-export-text-problems" target="_blank"><text text-anchor="middle" font-size="10px" x="50%" y="100%">Text is not SVG - cannot display</text></a></switch></svg>
\ No newline at end of file

specs/assets/propagation.svg

 <?xml version="1.0" encoding="UTF-8"?>
 <!-- Do not edit this file with editors other than diagrams.net -->
 <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
-<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" width="481px" height="291px" viewBox="-0.5 -0.5 481 291" content="&lt;mxfile host=&quot;app.diagrams.net&quot; modified=&quot;2022-04-04T03:33:01.375Z&quot; agent=&quot;5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.60 Safari/537.36&quot; version=&quot;17.2.5&quot; etag=&quot;G4rfaGD2bU2ce6Z3V8kS&quot; type=&quot;google&quot;&gt;&lt;diagram id=&quot;z_UtGdSUZwvYQkXjM40-&quot;&gt;5Vpdd6M2EP01fuwe82nyuE6cds9J25y6H+mjDAOoixEVYm3311cYyRhLbnBQjLv74oMuEkh3pJk7gyfO/Xr7PUVF+iOJIJvY02g7cR4mtj0LfP5bA7sGsKb+rEESiiOBtcAS/wOyo0ArHEHZ6cgIyRguumBI8hxC1sEQpWTT7RaTrPvWAiWgAMsQZSr6B45Y2qCBN23xHwAnqXyzNRV31kh2FkCZoohsjiBnMXHuKSGsuVpv7yGryZO8NOMez9w9TIxCzvoMsJsBX1BWibWJebGdXCwlVR5B3X86ceabFDNYFiis7264eTmWsnXGWxa/jHGW3ZOM0P1YJ45jOww5XjJKPsPRnchf+Z7P74gJAGWwPbsI60AN31NA1sDojncRAxxBpthOrmR709rGDQSWHtlFYkhsh+Tw5JYxfiFI0xPovC+BkQdB5OoIDOyV4xsi0Lo7YTBQGXRsDYOHEzmEQlehcJEnOAeOfXz+pNAJET+LokkoS0lCcpQtWnTeJbzt80RIIWj+CxjbCceCKka6RuC00d1LPf6DJ5t/isftGw/bTmsnWiVDlH2sHQwHcpKDxB5xvfp9n2Y99SI6xipJRUMBCWfIByYgt2pvk1LIEMNfuk8fYh5vFAtsMXs5ut6z/2HmiWbLf93YDaLWcsbj1r8dbu3/5rY9Ep0D0Z6PM0fijTaxx7PJTHFHv5Asq4pJ7QD9jM9mvqL8KqmvfuLaZpjDTyiKMF/kA6ZcqmCScxxQyTTBNAhBH0xXged606OHyXvCBxkIEbbXDRGeJsj6mgjhGwgQgRogFt8k6b59PdLvFNKfrGGkGyDEnZ0IFU8jVHQ6xQAhUuocMzJQ7L0DI75/RUYshZFR4pkMTdZloamPWpOxUjxNRsuhMkTGt07Mcy+1/Xc8ajdjegdB8axngvkr2i4kjks+j1PbH17ZbzuoyeQcsTDl0LJarTFjQIedl8t9s4ET5vivRz7L1Rwxx8QRU/PLnytWVOxrI9W5JqlqxrnfqJ/yFdmO7tGt03KGpaFGl4wboWacbO+N+bY+kxmcJFq+6p1nvc1oPCGR0znarg9QkBKzR+Cs39x+da+5X9Vszag3vE797ZRBTfnN0ul8I+U3S02vxvUBA1RcmKGyxOGJkDsuekwvcBWQRyfykCOXlfLkvh8m9PhELWmV25B6d/+nMPFGO11wjo37fFtNNm+kChUhCGKtPvTDAFaxGY84e11zv1fhw1az2uuVm0Zh95plJenGRo42F+X+F4WMg4uyTfsonSyVlhvFR6m56W95iWJQHdQ8I+FnFX6mpEAJ2p+IsTfBeenQwzSaTxijWkZNcH99qSsGuzwcJXBrT9IrX/POlfVmhhRhD7MGNyYKPMWsS4YY3Jxl+35LPLGs/e1aVk3xnyDh2cYw3WFAKiiFujtVK+j+W2Miudd8il3C3xXk4VdR89TJrnejUk3yfweKY2yYyevoV4VJzWdAQ0zyZvtvvCZTbv/T6Cz+BQ==&lt;/diagram&gt;&lt;/mxfile&gt;" style="background-color: rgb(255, 255, 255);"><defs/><g><rect x="0" y="0" width="480" height="80" fill="#fff2cc" stroke="#d6b656" pointer-events="all"/><rect x="160" y="80" width="320" height="210" fill="#d5e8d4" stroke="#82b366" pointer-events="all"/><path d="M 250 160 L 250 213.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 250 218.88 L 246.5 211.88 L 250 213.63 L 253.5 211.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 1px; height: 1px; padding-top: 190px; margin-left: 250px;"><div data-drawio-colors="color: rgb(0, 0, 0); background-color: rgb(255, 255, 255); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 11px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; background-color: rgb(255, 255, 255); white-space: nowrap;">Engine API</div></div></div></foreignObject><text x="250" y="193" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="11px" text-anchor="middle">Engine API</text></switch></g><path d="M 280 145 L 323.63 145" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 328.88 145 L 321.88 148.5 L 323.63 145 L 321.88 141.5 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><path d="M 280 115 L 323.63 115" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 328.88 115 L 321.88 118.5 L 323.63 115 L 321.88 111.5 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><rect x="220" y="100" width="60" height="60" fill="#f8cecc" stroke="#b85450" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 58px; height: 1px; padding-top: 130px; margin-left: 221px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">Rollup <br />Node</div></div></div></foreignObject><text x="250" y="134" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Rollup...</text></switch></g><rect x="220" y="220" width="60" height="60" fill="#f8cecc" stroke="#b85450" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 58px; height: 1px; padding-top: 250px; margin-left: 221px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">EE</div></div></div></foreignObject><text x="250" y="254" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">EE</text></switch></g><rect x="440" y="50" width="30" height="20" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 28px; height: 1px; padding-top: 60px; margin-left: 441px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">L1</div></div></div></foreignObject><text x="455" y="64" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">L1</text></switch></g><rect x="440" y="260" width="30" height="20" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 28px; height: 1px; padding-top: 270px; margin-left: 441px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">L2</div></div></div></foreignObject><text x="455" y="274" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">L2</text></switch></g><path d="M 400 100 L 400 25 L 226.37 25" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 221.12 25 L 228.12 21.5 L 226.37 25 L 228.12 28.5 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><rect x="330" y="100" width="140" height="30" fill="#f8cecc" stroke="#b85450" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 138px; height: 1px; padding-top: 115px; margin-left: 331px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">Batch Submitter</div></div></div></foreignObject><text x="400" y="119" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Batch Submitter</text></switch></g><rect x="330" y="130" width="140" height="30" fill="#f8cecc" stroke="#b85450" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 138px; height: 1px; padding-top: 145px; margin-left: 331px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">Output Submitter</div></div></div></foreignObject><text x="400" y="149" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Output Submitter</text></switch></g><rect x="100" y="10" width="120" height="30" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 25px; margin-left: 101px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">BatchInbox</div></div></div></foreignObject><text x="160" y="29" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">BatchInbox</text></switch></g><path d="M 220 55 L 250 55 L 250 93.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 250 98.88 L 246.5 91.88 L 250 93.63 L 253.5 91.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><rect x="100" y="40" width="120" height="30" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 55px; margin-left: 101px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">DepositFeed</div></div></div></foreignObject><text x="160" y="59" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">DepositFeed</text></switch></g><rect x="0" y="80" width="160" height="210" fill="#d5e8d4" stroke="#82b366" pointer-events="all"/><path d="M 33.63 130 L 20 130 L 20 25 L 100 25" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 38.88 130 L 31.88 133.5 L 33.63 130 L 31.88 126.5 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><path d="M 70 160 L 70 213.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 70 218.88 L 66.5 211.88 L 70 213.63 L 73.5 211.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><rect x="40" y="100" width="60" height="60" fill="#dae8fc" stroke="#6c8ebf" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 58px; height: 1px; padding-top: 130px; margin-left: 41px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">Rollup <br />Node</div></div></div></foreignObject><text x="70" y="134" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Rollup...</text></switch></g><rect x="40" y="220" width="60" height="60" fill="#dae8fc" stroke="#6c8ebf" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 58px; height: 1px; padding-top: 250px; margin-left: 41px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">EE</div></div></div></foreignObject><text x="70" y="254" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">EE</text></switch></g><path d="M 100 55 L 55 55 L 55 93.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 55 98.88 L 51.5 91.88 L 55 93.63 L 58.5 91.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><path d="M 213.63 130 L 106.37 130" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 218.88 130 L 211.88 133.5 L 213.63 130 L 211.88 126.5 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><path d="M 101.12 130 L 108.12 126.5 L 106.37 130 L 108.12 133.5 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 1px; height: 1px; padding-top: 130px; margin-left: 160px;"><div data-drawio-colors="color: rgb(0, 0, 0); background-color: rgb(255, 255, 255); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 11px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; background-color: rgb(255, 255, 255); white-space: nowrap;">Unsafe<br />Block<br />Propagation</div></div></div></foreignObject><text x="160" y="133" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="11px" text-anchor="middle">Unsafe...</text></switch></g><path d="M 213.63 265 L 106.37 265" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 218.88 265 L 211.88 268.5 L 213.63 265 L 211.88 261.5 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><path d="M 101.12 265 L 108.12 261.5 L 106.37 265 L 108.12 268.5 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 1px; height: 1px; padding-top: 265px; margin-left: 160px;"><div data-drawio-colors="color: rgb(0, 0, 0); background-color: rgb(255, 255, 255); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 11px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; background-color: rgb(255, 255, 255); white-space: nowrap;">TX Sync</div></div></div></foreignObject><text x="160" y="268" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="11px" text-anchor="middle">TX Sync</text></switch></g><path d="M 213.63 235 L 106.37 235" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 218.88 235 L 211.88 238.5 L 213.63 235 L 211.88 231.5 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><path d="M 101.12 235 L 108.12 231.5 L 106.37 235 L 108.12 238.5 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 1px; height: 1px; padding-top: 235px; margin-left: 160px;"><div data-drawio-colors="color: rgb(0, 0, 0); background-color: rgb(255, 255, 255); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 11px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; background-color: rgb(255, 255, 255); white-space: nowrap;">State Sync</div></div></div></foreignObject><text x="160" y="238" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="11px" text-anchor="middle">State Sync</text></switch></g><rect x="330" y="190" width="80" height="30" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 78px; height: 1px; padding-top: 205px; margin-left: 331px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">Legend</div></div></div></foreignObject><text x="370" y="209" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Legend</text></switch></g><rect x="330" y="220" width="80" height="30" fill="#f8cecc" stroke="#b85450" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 78px; height: 1px; padding-top: 235px; margin-left: 331px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">Sequencer</div></div></div></foreignObject><text x="370" y="239" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Sequencer</text></switch></g><rect x="330" y="250" width="80" height="30" fill="#dae8fc" stroke="#6c8ebf" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 78px; height: 1px; padding-top: 265px; margin-left: 331px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">Verifier</div></div></div></foreignObject><text x="370" y="269" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Verifier</text></switch></g></g><switch><g requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"/><a transform="translate(0,-5)" xlink:href="https://www.diagrams.net/doc/faq/svg-export-text-problems" target="_blank"><text text-anchor="middle" font-size="10px" x="50%" y="100%">Text is not SVG - cannot display</text></a></switch></svg>
\ No newline at end of file
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" width="481px" height="291px" viewBox="-0.5 -0.5 481 291" content="&lt;mxfile host=&quot;Electron&quot; modified=&quot;2023-03-20T08:58:47.205Z&quot; agent=&quot;5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) draw.io/20.8.16 Chrome/106.0.5249.199 Electron/21.4.0 Safari/537.36&quot; etag=&quot;q6rv6FZaU_LAJZ8DLjMH&quot; version=&quot;20.8.16&quot; type=&quot;device&quot;&gt;&lt;diagram id=&quot;z_UtGdSUZwvYQkXjM40-&quot; name=&quot;Page-1&quot;&gt;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&lt;/diagram&gt;&lt;/mxfile&gt;"><defs/><g><rect x="0" y="0" width="480" height="80" fill="#fff2cc" stroke="#d6b656" pointer-events="all"/><rect x="160" y="80" width="320" height="210" fill="#d5e8d4" stroke="#82b366" pointer-events="all"/><path d="M 250 160 L 250 213.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 250 218.88 L 246.5 211.88 L 250 213.63 L 253.5 211.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 1px; height: 1px; padding-top: 190px; margin-left: 250px;"><div data-drawio-colors="color: rgb(0, 0, 0); background-color: rgb(255, 255, 255); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 11px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; background-color: rgb(255, 255, 255); white-space: nowrap;">Engine API</div></div></div></foreignObject><text x="250" y="193" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="11px" text-anchor="middle">Engine API</text></switch></g><path d="M 280 145 L 323.63 145" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 328.88 145 L 321.88 148.5 L 323.63 145 L 321.88 141.5 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><path d="M 280 115 L 323.63 115" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 328.88 115 L 321.88 118.5 L 323.63 115 L 321.88 111.5 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><rect x="220" y="100" width="60" height="60" fill="#f8cecc" stroke="#b85450" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 58px; height: 1px; padding-top: 130px; margin-left: 221px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">Rollup <br />Node</div></div></div></foreignObject><text x="250" y="134" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Rollup...</text></switch></g><rect x="220" y="220" width="60" height="60" fill="#f8cecc" stroke="#b85450" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 58px; height: 1px; padding-top: 250px; margin-left: 221px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">EE</div></div></div></foreignObject><text x="250" y="254" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">EE</text></switch></g><rect x="440" y="50" width="30" height="20" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 28px; height: 1px; padding-top: 60px; margin-left: 441px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">L1</div></div></div></foreignObject><text x="455" y="64" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">L1</text></switch></g><rect x="440" y="260" width="30" height="20" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 28px; height: 1px; padding-top: 270px; margin-left: 441px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">L2</div></div></div></foreignObject><text x="455" y="274" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">L2</text></switch></g><path d="M 400 100 L 400 25 L 226.37 25" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 221.12 25 L 228.12 21.5 L 226.37 25 L 228.12 28.5 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><rect x="330" y="100" width="140" height="30" fill="#f8cecc" stroke="#b85450" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 138px; height: 1px; padding-top: 115px; margin-left: 331px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">Batch Submitter</div></div></div></foreignObject><text x="400" y="119" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Batch Submitter</text></switch></g><rect x="330" y="130" width="140" height="30" fill="#f8cecc" stroke="#b85450" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 138px; height: 1px; padding-top: 145px; margin-left: 331px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">Output Submitter</div></div></div></foreignObject><text x="400" y="149" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Output Submitter</text></switch></g><rect x="100" y="10" width="120" height="30" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 25px; margin-left: 101px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">BatchInbox</div></div></div></foreignObject><text x="160" y="29" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">BatchInbox</text></switch></g><path d="M 220 55 L 250 55 L 250 93.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 250 98.88 L 246.5 91.88 L 250 93.63 L 253.5 91.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><rect x="100" y="40" width="120" height="30" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 55px; margin-left: 101px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">OptimismPortal</div></div></div></foreignObject><text x="160" y="59" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">OptimismPortal</text></switch></g><rect x="0" y="80" width="160" height="210" fill="#d5e8d4" stroke="#82b366" pointer-events="all"/><path d="M 33.63 130 L 20 130 L 20 25 L 100 25" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 38.88 130 L 31.88 133.5 L 33.63 130 L 31.88 126.5 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><path d="M 70 160 L 70 213.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 70 218.88 L 66.5 211.88 L 70 213.63 L 73.5 211.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><rect x="40" y="100" width="60" height="60" fill="#dae8fc" stroke="#6c8ebf" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 58px; height: 1px; padding-top: 130px; margin-left: 41px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">Rollup <br />Node</div></div></div></foreignObject><text x="70" y="134" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Rollup...</text></switch></g><rect x="40" y="220" width="60" height="60" fill="#dae8fc" stroke="#6c8ebf" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 58px; height: 1px; padding-top: 250px; margin-left: 41px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">EE</div></div></div></foreignObject><text x="70" y="254" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">EE</text></switch></g><path d="M 100 55 L 55 55 L 55 93.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 55 98.88 L 51.5 91.88 L 55 93.63 L 58.5 91.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><path d="M 213.63 130 L 106.37 130" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 218.88 130 L 211.88 133.5 L 213.63 130 L 211.88 126.5 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><path d="M 101.12 130 L 108.12 126.5 L 106.37 130 L 108.12 133.5 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 1px; height: 1px; padding-top: 130px; margin-left: 160px;"><div data-drawio-colors="color: rgb(0, 0, 0); background-color: rgb(255, 255, 255); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 11px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; background-color: rgb(255, 255, 255); white-space: nowrap;">Unsafe<br />Block<br />Propagation</div></div></div></foreignObject><text x="160" y="133" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="11px" text-anchor="middle">Unsafe...</text></switch></g><path d="M 213.63 265 L 106.37 265" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 218.88 265 L 211.88 268.5 L 213.63 265 L 211.88 261.5 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><path d="M 101.12 265 L 108.12 261.5 L 106.37 265 L 108.12 268.5 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 1px; height: 1px; padding-top: 265px; margin-left: 160px;"><div data-drawio-colors="color: rgb(0, 0, 0); background-color: rgb(255, 255, 255); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 11px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; background-color: rgb(255, 255, 255); white-space: nowrap;">TX Sync</div></div></div></foreignObject><text x="160" y="268" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="11px" text-anchor="middle">TX Sync</text></switch></g><path d="M 213.63 235 L 106.37 235" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 218.88 235 L 211.88 238.5 L 213.63 235 L 211.88 231.5 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><path d="M 101.12 235 L 108.12 231.5 L 106.37 235 L 108.12 238.5 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 1px; height: 1px; padding-top: 235px; margin-left: 160px;"><div data-drawio-colors="color: rgb(0, 0, 0); background-color: rgb(255, 255, 255); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 11px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; background-color: rgb(255, 255, 255); white-space: nowrap;">State Sync</div></div></div></foreignObject><text x="160" y="238" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="11px" text-anchor="middle">State Sync</text></switch></g><rect x="330" y="190" width="80" height="30" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 78px; height: 1px; padding-top: 205px; margin-left: 331px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">Legend</div></div></div></foreignObject><text x="370" y="209" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Legend</text></switch></g><rect x="330" y="220" width="80" height="30" fill="#f8cecc" stroke="#b85450" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 78px; height: 1px; padding-top: 235px; margin-left: 331px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">Sequencer</div></div></div></foreignObject><text x="370" y="239" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Sequencer</text></switch></g><rect x="330" y="250" width="80" height="30" fill="#dae8fc" stroke="#6c8ebf" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 78px; height: 1px; padding-top: 265px; margin-left: 331px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">Verifier</div></div></div></foreignObject><text x="370" y="269" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">Verifier</text></switch></g></g><switch><g requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"/><a transform="translate(0,-5)" xlink:href="https://www.diagrams.net/doc/faq/svg-export-text-problems" target="_blank"><text text-anchor="middle" font-size="10px" x="50%" y="100%">Text is not SVG - cannot display</text></a></switch></svg>
\ No newline at end of file

specs/overview.md

@@ -48,8 +48,8 @@ mechanisms.
 
 ### L1 Components
 
-- **DepositFeed**: A feed of L2 transactions which originated as smart contract calls in the L1 state.
-  - The `DepositFeed` contract emits `TransactionDeposited` events, which the rollup driver reads in order to process
+- **OptimismPortal**: A feed of L2 transactions which originated as smart contract calls in the L1 state.
+  - The `OptimismPortal` contract emits `TransactionDeposited` events, which the rollup driver reads in order to process
 deposits.
   - Deposits are guaranteed to be reflected in the L2 state within the _sequencing window_.
   - Beware that _transactions_ are deposited, not tokens. However deposited transactions are a key part of implementing
@@ -106,7 +106,7 @@ The below diagram illustrates how the sequencer and verifiers fit together:
 - [Deposits](./deposits.md)
 
 Optimism supports two types of deposits: user deposits, and L1 attributes deposits. To perform a user deposit, users
-call the `depositTransaction` method on the `DepositFeed` contract. This in turn emits `TransactionDeposited` events,
+call the `depositTransaction` method on the `OptimismPortal` contract. This in turn emits `TransactionDeposited` events,
 which the rollup node reads during block derivation.
 
 L1 attributes deposits are used to register L1 block attributes (number, timestamp, etc.) on L2 via a call to the L1
@@ -141,8 +141,8 @@ worth of blocks has passed, i.e. after L1 block number `n + SEQUENCING_WINDOW_SI
 
 Each epoch contains at least one block. Every block in the epoch contains an L1 info transaction which contains
 contextual information about L1 such as the block hash and timestamp. The first block in the epoch also contains all
-deposits initiated via the `DepositFeed` contract on L1. All L2 blocks can also contain _sequenced transactions_, i.e.
-transactions submitted directly to the sequencer.
+deposits initiated via the `OptimismPortal` contract on L1. All L2 blocks can also contain _sequenced transactions_,
+i.e.  transactions submitted directly to the sequencer.
 
 Whenever the sequencer creates a new L2 block for a given epoch, it must submit it to L1 as part of a _batch_, within
 the epoch's sequencing window (i.e. the batch must land before L1 block `n + SEQUENCING_WINDOW_SIZE`). These batches are

specs/withdrawals.md

@@ -130,7 +130,7 @@ recognize that having the same address does not imply that a contract on L2 will
 ## The Optimism Portal Contract
 
 The Optimism Portal serves as both the entry and exit point to the Optimism L2. It is a contract which inherits from
-the [DepositFeed](./deposits.md#deposit-contract) contract, and in addition provides the following interface for
+the [OptimismPortal](./deposits.md#deposit-contract) contract, and in addition provides the following interface for
 withdrawals:
 
 - [`WithdrawalTransaction` type]