feat(sdk): add Bedrock support to SDK (#3086)

* core-utils: add bedrock types

* sdk: implement bedrock functionality

* tests: update for bedrock

* sdk: add hardhat deposit task

* circleci: run deposit task in ci

* tsconfig: cleanup

* contracts-bedrock: make commitment interval larger

* changeset: add
Co-authored-by: Mark Tyneway <mark.tyneway@gmail.com>

.changeset/wise-ads-try.md

+---
+'@eth-optimism/sdk': minor
+'@eth-optimism/contracts-bedrock': patch
+'@eth-optimism/core-utils': patch
+---
+
+Updates the SDK to be compatible with Bedrock (via the "bedrock: true" constructor param). Updates the build pipeline for contracts-bedrock to export a properly formatted dist folder that matches our other packages.

.circleci/config.yml

@@ -457,6 +457,10 @@ jobs:
                 --private-key 0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80 \
                 --network devnetL1
           working_directory: packages/contracts-bedrock
+      - run:
+          name: Deposit ERC20 through the bridge
+          command: npx hardhat deposit --network devnetL1
+          working_directory: packages/sdk
       - run:
           name: Check the status
           command: npx hardhat check-op-node

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

@@ -8,7 +8,7 @@ const l1GenesisTimestamp =
     : Math.floor(Date.now() / 1000)
 
 const config = {
-  submissionInterval: 6,
+  submissionInterval: 20,
   genesisOutput: ethers.constants.HashZero,
   historicalBlocks: 0,
   l1StartingBlockTag: 'earliest',

packages/core-utils/src/optimism/hashing.ts

@@ -9,6 +9,18 @@ import {
   big1,
 } from './encoding'
 
+/**
+ * Bedrock output oracle data.
+ */
+export interface BedrockOutputData {
+  outputRoot: string
+  l1Timestamp: number
+  l2BlockNumber: number
+}
+
+/**
+ * Bedrock state commitment
+ */
 export interface OutputRootProof {
   version: string
   stateRoot: string
@@ -16,6 +28,23 @@ export interface OutputRootProof {
   latestBlockhash: string
 }
 
+/**
+ * Bedrock proof data required to finalize an L2 to L1 message.
+ */
+export interface BedrockCrossChainMessageProof {
+  outputRootProof: OutputRootProof
+  withdrawalProof: string
+}
+
+/**
+ * Parameters that govern the L2OutputOracle.
+ */
+export type L2OutputOracleParameters = {
+  submissionInterval: number
+  startingBlockNumber: number
+  l2BlockTime: number
+}
+
 /**
  * Hahses a cross domain message.
  *

packages/sdk/hardhat.config.ts

@@ -2,6 +2,9 @@ import { HardhatUserConfig } from 'hardhat/types'
 
 import '@nomiclabs/hardhat-ethers'
 import '@nomiclabs/hardhat-waffle'
+import 'hardhat-deploy'
+
+import './tasks/deposit'
 
 const config: HardhatUserConfig = {
   solidity: {
@@ -10,6 +13,25 @@ const config: HardhatUserConfig = {
   paths: {
     sources: './test/contracts',
   },
+  networks: {
+    devnetL1: {
+      url: 'http://localhost:8545',
+      accounts: [
+        'ac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80',
+      ],
+    },
+  },
+  external: {
+    contracts: [
+      {
+        artifacts: '../contracts-bedrock/artifacts',
+      },
+    ],
+    deployments: {
+      devnetL1: ['../contracts-bedrock/deployments/devnetL1'],
+      goerli: ['../contracts-bedrock/deployments/goerli'],
+    },
+  },
 }
 
 export default config

packages/sdk/package.json

@@ -41,6 +41,7 @@
     "ethereum-waffle": "^3.4.0",
     "ethers": "^5.6.8",
     "hardhat": "^2.9.6",
+    "hardhat-deploy": "^0.11.4",
     "nyc": "^15.1.0",
     "typedoc": "^0.22.13",
     "mocha": "^10.0.0"
@@ -48,6 +49,7 @@
   "dependencies": {
     "@eth-optimism/contracts": "0.5.31",
     "@eth-optimism/core-utils": "0.9.2",
+    "@eth-optimism/contracts-bedrock": "0.5.2",
     "lodash": "^4.17.21",
     "merkletreejs": "^0.2.27",
     "rlp": "^2.2.7"

packages/sdk/src/adapters/eth-bridge.ts

@@ -42,12 +42,12 @@ export class ETHBridgeAdapter extends StandardBridgeAdapter {
       .map((event) => {
         return {
           direction: MessageDirection.L1_TO_L2,
-          from: event.args._from,
-          to: event.args._to,
+          from: event.args.from,
+          to: event.args.to,
           l1Token: ethers.constants.AddressZero,
           l2Token: predeploys.OVM_ETH,
-          amount: event.args._amount,
-          data: event.args._data,
+          amount: event.args.amount,
+          data: event.args.extraData,
           logIndex: event.logIndex,
           blockNumber: event.blockNumber,
           transactionHash: event.transactionHash,
@@ -76,19 +76,19 @@ export class ETHBridgeAdapter extends StandardBridgeAdapter {
       .filter((event) => {
         // Only find ETH withdrawals.
         return (
-          hexStringEquals(event.args._l1Token, ethers.constants.AddressZero) &&
-          hexStringEquals(event.args._l2Token, predeploys.OVM_ETH)
+          hexStringEquals(event.args.l1Token, ethers.constants.AddressZero) &&
+          hexStringEquals(event.args.l2Token, predeploys.OVM_ETH)
         )
       })
       .map((event) => {
         return {
           direction: MessageDirection.L2_TO_L1,
-          from: event.args._from,
-          to: event.args._to,
-          l1Token: event.args._l1Token,
-          l2Token: event.args._l2Token,
-          amount: event.args._amount,
-          data: event.args._data,
+          from: event.args.from,
+          to: event.args.to,
+          l1Token: event.args.l1Token,
+          l2Token: event.args.l2Token,
+          amount: event.args.amount,
+          data: event.args.extraData,
           logIndex: event.logIndex,
           blockNumber: event.blockNumber,
           transactionHash: event.transactionHash,
@@ -178,7 +178,10 @@ export class ETHBridgeAdapter extends StandardBridgeAdapter {
           amount,
           0, // L1 gas not required.
           '0x', // No data.
-          opts?.overrides || {}
+          {
+            ...omit(opts?.overrides || {}, 'value'),
+            value: this.messenger.bedrock ? amount : 0,
+          }
         )
       } else {
         return this.l2Bridge.populateTransaction.withdrawTo(
@@ -187,7 +190,10 @@ export class ETHBridgeAdapter extends StandardBridgeAdapter {
           amount,
           0, // L1 gas not required.
           '0x', // No data.
-          opts?.overrides || {}
+          {
+            ...omit(opts?.overrides || {}, 'value'),
+            value: this.messenger.bedrock ? amount : 0,
+          }
         )
       }
     },

packages/sdk/src/adapters/standard-bridge.ts

@@ -12,7 +12,8 @@ import {
   TransactionResponse,
   BlockTag,
 } from '@ethersproject/abstract-provider'
-import { getContractInterface, predeploys } from '@eth-optimism/contracts'
+import { predeploys } from '@eth-optimism/contracts'
+import { getContractInterface } from '@eth-optimism/contracts-bedrock'
 import { hexStringEquals } from '@eth-optimism/core-utils'
 
 import {
@@ -54,7 +55,7 @@ export class StandardBridgeAdapter implements IBridgeAdapter {
     )
     this.l2Bridge = new Contract(
       toAddress(opts.l2Bridge),
-      getContractInterface('IL2ERC20Bridge'),
+      getContractInterface('L2StandardBridge'),
       this.messenger.l2Provider
     )
   }
@@ -82,19 +83,19 @@ export class StandardBridgeAdapter implements IBridgeAdapter {
         // adapter. Bridges that are not the ETH bridge should not be able to handle or even
         // present ETH deposits or withdrawals.
         return (
-          !hexStringEquals(event.args._l1Token, ethers.constants.AddressZero) &&
-          !hexStringEquals(event.args._l2Token, predeploys.OVM_ETH)
+          !hexStringEquals(event.args.l1Token, ethers.constants.AddressZero) &&
+          !hexStringEquals(event.args.l2Token, predeploys.OVM_ETH)
         )
       })
       .map((event) => {
         return {
           direction: MessageDirection.L1_TO_L2,
-          from: event.args._from,
-          to: event.args._to,
-          l1Token: event.args._l1Token,
-          l2Token: event.args._l2Token,
-          amount: event.args._amount,
-          data: event.args._data,
+          from: event.args.from,
+          to: event.args.to,
+          l1Token: event.args.l1Token,
+          l2Token: event.args.l2Token,
+          amount: event.args.amount,
+          data: event.args.extraData,
           logIndex: event.logIndex,
           blockNumber: event.blockNumber,
           transactionHash: event.transactionHash,
@@ -125,19 +126,19 @@ export class StandardBridgeAdapter implements IBridgeAdapter {
         // adapter. Bridges that are not the ETH bridge should not be able to handle or even
         // present ETH deposits or withdrawals.
         return (
-          !hexStringEquals(event.args._l1Token, ethers.constants.AddressZero) &&
-          !hexStringEquals(event.args._l2Token, predeploys.OVM_ETH)
+          !hexStringEquals(event.args.l1Token, ethers.constants.AddressZero) &&
+          !hexStringEquals(event.args.l2Token, predeploys.OVM_ETH)
         )
       })
       .map((event) => {
         return {
           direction: MessageDirection.L2_TO_L1,
-          from: event.args._from,
-          to: event.args._to,
-          l1Token: event.args._l1Token,
-          l2Token: event.args._l2Token,
-          amount: event.args._amount,
-          data: event.args._data,
+          from: event.args.from,
+          to: event.args.to,
+          l1Token: event.args.l1Token,
+          l2Token: event.args.l2Token,
+          amount: event.args.amount,
+          data: event.args.extraData,
           logIndex: event.logIndex,
           blockNumber: event.blockNumber,
           transactionHash: event.transactionHash,
@@ -156,10 +157,9 @@ export class StandardBridgeAdapter implements IBridgeAdapter {
     try {
       const contract = new Contract(
         toAddress(l2Token),
-        getContractInterface('L2StandardERC20'),
+        getContractInterface('OptimismMintableERC20'),
         this.messenger.l2Provider
       )
-
       // Don't support ETH deposits or withdrawals via this bridge.
       if (
         hexStringEquals(toAddress(l1Token), ethers.constants.AddressZero) ||
@@ -170,6 +170,7 @@ export class StandardBridgeAdapter implements IBridgeAdapter {
 
       // Make sure the L1 token matches.
       const remoteL1Token = await contract.l1Token()
+
       if (!hexStringEquals(remoteL1Token, toAddress(l1Token))) {
         return false
       }
@@ -203,7 +204,7 @@ export class StandardBridgeAdapter implements IBridgeAdapter {
 
     const token = new Contract(
       toAddress(l1Token),
-      getContractInterface('L2StandardERC20'), // Any ERC20 will do
+      getContractInterface('OptimismMintableERC20'), // Any ERC20 will do
       this.messenger.l1Provider
     )
 
@@ -270,7 +271,7 @@ export class StandardBridgeAdapter implements IBridgeAdapter {
 
       const token = new Contract(
         toAddress(l1Token),
-        getContractInterface('L2StandardERC20'), // Any ERC20 will do
+        getContractInterface('OptimismMintableERC20'), // Any ERC20 will do
         this.messenger.l1Provider
       )
 

packages/sdk/src/cross-chain-messenger.ts

@@ -5,13 +5,27 @@ import {
   TransactionReceipt,
   TransactionResponse,
   TransactionRequest,
+  Log,
 } from '@ethersproject/abstract-provider'
 import { Signer } from '@ethersproject/abstract-signer'
 import { ethers, BigNumber, Overrides, CallOverrides } from 'ethers'
-import { sleep, remove0x } from '@eth-optimism/core-utils'
-import { predeploys } from '@eth-optimism/contracts'
+import {
+  sleep,
+  remove0x,
+  toHexString,
+  toRpcHexString,
+  hashWithdrawal,
+  encodeCrossDomainMessageV0,
+  hashCrossDomainMessage,
+  L2OutputOracleParameters,
+  BedrockOutputData,
+  BedrockCrossChainMessageProof,
+} from '@eth-optimism/core-utils'
+import { getContractInterface, predeploys } from '@eth-optimism/contracts'
+import * as rlp from 'rlp'
 
 import {
+  CoreCrossChainMessage,
   ICrossChainMessenger,
   OEContracts,
   OEContractsLike,
@@ -42,10 +56,8 @@ import {
   DeepPartial,
   getAllOEContracts,
   getBridgeAdapters,
-  hashCrossChainMessage,
   makeMerkleTreeProof,
   makeStateTrieProof,
-  encodeCrossChainMessage,
   DEPOSIT_CONFIRMATION_BLOCKS,
   CHAIN_BLOCK_TIMES,
 } from './utils'
@@ -59,6 +71,9 @@ export class CrossChainMessenger implements ICrossChainMessenger {
   public bridges: BridgeAdapters
   public depositConfirmationBlocks: number
   public l1BlockTimeSeconds: number
+  public bedrock: boolean
+
+  private _l2OutputOracleParameters: L2OutputOracleParameters
 
   /**
    * Creates a new CrossChainProvider instance.
@@ -72,6 +87,7 @@ export class CrossChainMessenger implements ICrossChainMessenger {
    * @param opts.l1BlockTimeSeconds Optional estimated block time in seconds for the L1 chain.
    * @param opts.contracts Optional contract address overrides.
    * @param opts.bridges Optional bridge address list.
+   * @param opts.bedrock Whether or not to enable Bedrock compatibility.
    */
   constructor(opts: {
     l1SignerOrProvider: SignerOrProviderLike
@@ -82,7 +98,9 @@ export class CrossChainMessenger implements ICrossChainMessenger {
     l1BlockTimeSeconds?: NumberLike
     contracts?: DeepPartial<OEContractsLike>
     bridges?: BridgeAdapterData
+    bedrock?: boolean
   }) {
+    this.bedrock = opts.bedrock ?? false
     this.l1SignerOrProvider = toSignerOrProvider(opts.l1SignerOrProvider)
     this.l2SignerOrProvider = toSignerOrProvider(opts.l2SignerOrProvider)
 
@@ -151,6 +169,26 @@ export class CrossChainMessenger implements ICrossChainMessenger {
     }
   }
 
+  public async getL2OutputOracleParameters(): Promise<L2OutputOracleParameters> {
+    if (this._l2OutputOracleParameters) {
+      return this._l2OutputOracleParameters
+    }
+
+    this._l2OutputOracleParameters = {
+      submissionInterval: (
+        await this.contracts.l1.L2OutputOracle.SUBMISSION_INTERVAL()
+      ).toNumber(),
+      startingBlockNumber: (
+        await this.contracts.l1.L2OutputOracle.STARTING_BLOCK_NUMBER()
+      ).toNumber(),
+      l2BlockTime: (
+        await this.contracts.l1.L2OutputOracle.L2_BLOCK_TIME()
+      ).toNumber(),
+    }
+
+    return this._l2OutputOracleParameters
+  }
+
   public async getMessagesByTransaction(
     transaction: TransactionLike,
     opts: {
@@ -203,6 +241,19 @@ export class CrossChainMessenger implements ICrossChainMessenger {
         return parsed.name === 'SentMessage'
       })
       .map((log) => {
+        // Try to pull out the value field, but only if the very next log is a SentMessageExtraData
+        // event which was introduced in the Bedrock upgrade.
+        let value = ethers.BigNumber.from(0)
+        if (receipt.logs.length > log.logIndex + 1) {
+          const next = receipt.logs[log.logIndex + 1]
+          if (next.address === messenger.address) {
+            const nextParsed = messenger.interface.parseLog(next)
+            if (nextParsed.name === 'SentMessageExtension1') {
+              value = nextParsed.args.value
+            }
+          }
+        }
+
         // Convert each SentMessage log into a message object
         const parsed = messenger.interface.parseLog(log)
         return {
@@ -211,7 +262,8 @@ export class CrossChainMessenger implements ICrossChainMessenger {
           sender: parsed.args.sender,
           message: parsed.args.message,
           messageNonce: parsed.args.messageNonce,
-          gasLimit: parsed.args.gasLimit,
+          value,
+          minGasLimit: parsed.args.gasLimit,
           logIndex: log.logIndex,
           blockNumber: log.blockNumber,
           transactionHash: log.transactionHash,
@@ -373,21 +425,33 @@ export class CrossChainMessenger implements ICrossChainMessenger {
       }
     } else {
       if (receipt === null) {
+        let timestamp: number
+        if (this.bedrock) {
+          const output = await this.getMessageBedrockOutput(resolved)
+          if (output === null) {
+            return MessageStatus.STATE_ROOT_NOT_PUBLISHED
+          }
+
+          timestamp = output.l1Timestamp
+        } else {
           const stateRoot = await this.getMessageStateRoot(resolved)
           if (stateRoot === null) {
             return MessageStatus.STATE_ROOT_NOT_PUBLISHED
-        } else {
+          }
+
+          const bn = stateRoot.batch.blockNumber
+          const block = await this.l1Provider.getBlock(bn)
+          timestamp = block.timestamp
+        }
+
         const challengePeriod = await this.getChallengePeriodSeconds()
-          const targetBlock = await this.l1Provider.getBlock(
-            stateRoot.batch.blockNumber
-          )
         const latestBlock = await this.l1Provider.getBlock('latest')
-          if (targetBlock.timestamp + challengePeriod > latestBlock.timestamp) {
+
+        if (timestamp + challengePeriod > latestBlock.timestamp) {
           return MessageStatus.IN_CHALLENGE_PERIOD
         } else {
           return MessageStatus.READY_FOR_RELAY
         }
-        }
       } else {
         if (receipt.receiptStatus === MessageReceiptStatus.RELAYED_SUCCEEDED) {
           return MessageStatus.RELAYED
@@ -402,7 +466,14 @@ export class CrossChainMessenger implements ICrossChainMessenger {
     message: MessageLike
   ): Promise<MessageReceipt> {
     const resolved = await this.toCrossChainMessage(message)
-    const messageHash = hashCrossChainMessage(resolved)
+    const messageHash = hashCrossDomainMessage(
+      resolved.messageNonce,
+      resolved.sender,
+      resolved.target,
+      resolved.value,
+      resolved.minGasLimit,
+      resolved.message
+    )
 
     // Here we want the messenger that will receive the message, not the one that sent it.
     const messenger =
@@ -642,11 +713,56 @@ export class CrossChainMessenger implements ICrossChainMessenger {
   }
 
   public async getChallengePeriodSeconds(): Promise<number> {
-    const challengePeriod =
-      await this.contracts.l1.StateCommitmentChain.FRAUD_PROOF_WINDOW()
+    const challengePeriod = this.bedrock
+      ? await this.contracts.l1.OptimismPortal.FINALIZATION_PERIOD_SECONDS()
+      : await this.contracts.l1.StateCommitmentChain.FRAUD_PROOF_WINDOW()
     return challengePeriod.toNumber()
   }
 
+  public async getMessageBedrockOutput(
+    message: MessageLike
+  ): Promise<BedrockOutputData | null> {
+    const resolved = await this.toCrossChainMessage(message)
+
+    // Outputs are only a thing for L2 to L1 messages.
+    if (resolved.direction === MessageDirection.L1_TO_L2) {
+      throw new Error(`cannot get a state root for an L1 to L2 message`)
+    }
+
+    const l2OutputOracleParameters = await this.getL2OutputOracleParameters()
+
+    // TODO: better way to do this
+    let number =
+      resolved.blockNumber - l2OutputOracleParameters.startingBlockNumber
+    while (number % l2OutputOracleParameters.submissionInterval !== 0) {
+      number++
+    }
+
+    // TODO: Handle old messages from before Bedrock upgrade.
+    const events = await this.contracts.l1.L2OutputOracle.queryFilter(
+      this.contracts.l1.L2OutputOracle.filters.OutputProposed(
+        undefined,
+        undefined,
+        number
+      )
+    )
+
+    if (events.length === 0) {
+      return null
+    }
+
+    // Should not happen
+    if (events.length > 1) {
+      throw new Error(`multiple output roots found for message`)
+    }
+
+    return {
+      outputRoot: events[0].args.l2Output,
+      l1Timestamp: events[0].args.l1Timestamp.toNumber(),
+      l2BlockNumber: events[0].args.l2BlockNumber.toNumber(),
+    }
+  }
+
   public async getMessageStateRoot(
     message: MessageLike
   ): Promise<StateRoot | null> {
@@ -826,8 +942,12 @@ export class CrossChainMessenger implements ICrossChainMessenger {
     // https://docs.soliditylang.org/en/v0.8.4/internals/layout_in_storage.html#mappings-and-dynamic-arrays
     const messageSlot = ethers.utils.keccak256(
       ethers.utils.keccak256(
-        encodeCrossChainMessage(resolved) +
-          remove0x(this.contracts.l2.L2CrossDomainMessenger.address)
+        encodeCrossDomainMessageV0(
+          resolved.target,
+          resolved.sender,
+          resolved.message,
+          resolved.messageNonce
+        ) + remove0x(this.contracts.l2.L2CrossDomainMessenger.address)
       ) + '00'.repeat(32)
     )
 
@@ -848,9 +968,142 @@ export class CrossChainMessenger implements ICrossChainMessenger {
           stateRoot.stateRootIndexInBatch
         ),
       },
-      stateTrieWitness: stateTrieProof.accountProof,
-      storageTrieWitness: stateTrieProof.storageProof,
+      stateTrieWitness: toHexString(rlp.encode(stateTrieProof.accountProof)),
+      storageTrieWitness: toHexString(rlp.encode(stateTrieProof.storageProof)),
+    }
+  }
+
+  public async getBedrockMessageProof(
+    message: MessageLike
+  ): Promise<
+    [BedrockCrossChainMessageProof, BedrockOutputData, CoreCrossChainMessage]
+  > {
+    const resolved = await this.toCrossChainMessage(message)
+    if (resolved.direction === MessageDirection.L1_TO_L2) {
+      throw new Error(`can only generate proofs for L2 to L1 messages`)
+    }
+
+    const output = await this.getMessageBedrockOutput(resolved)
+    if (output === null) {
+      throw new Error(`state root for message not yet published`)
+    }
+
+    const receipt = await this.l2Provider.getTransactionReceipt(
+      resolved.transactionHash
+    )
+
+    interface WithdrawalEntry {
+      withdrawalInitiated: any
+      withdrawalInitiatedExtension1: any
+    }
+
+    // Handle multiple withdrawals in the same tx and be backwards
+    // compatible without WithdrawalInitiatedExtension1
+    const logs: Partial<{ number: WithdrawalEntry }> = {}
+    for (const [i, log] of Object.entries(receipt.logs)) {
+      if (log.address === predeploys.OVM_L2ToL1MessagePasser) {
+        const decoded =
+          this.contracts.l2.L2ToL1MessagePasser.interface.parseLog(log)
+        // Find the withdrawal initiated events
+        if (decoded.name === 'WithdrawalInitiated') {
+          logs[log.logIndex] = {
+            withdrawalInitiated: decoded.args,
+            withdrawalInitiatedExtension1: null,
+          }
+          if (receipt.logs[i + 1]) {
+            const next =
+              this.contracts.l2.L2ToL1MessagePasser.interface.parseLog(
+                receipt.logs[i + 1]
+              )
+            if (next.name === 'WithdrawalInitiatedExtension1') {
+              logs[log.logIndex].withdrawalInitiatedExtension1 = next.args
+            }
+          }
+        }
+      }
+    }
+
+    // TODO(tynes): be able to handle transactions that do multiple withdrawals
+    // in a single transaction. Right now just go for the first one.
+    const withdrawal = Object.values(logs)[0]
+    if (!withdrawal) {
+      throw new Error(
+        `Cannot find withdrawal logs for ${resolved.transactionHash}`
+      )
+    }
+
+    const withdrawalHash = hashWithdrawal(
+      withdrawal.withdrawalInitiated.nonce,
+      withdrawal.withdrawalInitiated.sender,
+      withdrawal.withdrawalInitiated.target,
+      withdrawal.withdrawalInitiated.value,
+      withdrawal.withdrawalInitiated.gasLimit,
+      withdrawal.withdrawalInitiated.data
+    )
+
+    // Sanity check
+    if (withdrawal.withdrawalInitiatedExtension1) {
+      if (withdrawal.withdrawalInitiatedExtension1.hash !== withdrawalHash) {
+        throw new Error(`Mismatched withdrawal hashes`)
+      }
     }
+
+    // TODO: turn into util
+    const preimage = ethers.utils.defaultAbiCoder.encode(
+      ['bytes32', 'uint256'],
+      [withdrawalHash, ethers.constants.HashZero]
+    )
+    const isMessageSent =
+      await this.contracts.l2.L2ToL1MessagePasser.sentMessages(withdrawalHash)
+
+    if (!isMessageSent) {
+      throw new Error(`Withdrawal not initiated on L2`)
+    }
+
+    const messageSlot = ethers.utils.keccak256(preimage)
+
+    const stateTrieProof = await makeStateTrieProof(
+      this.l2Provider as ethers.providers.JsonRpcProvider,
+      output.l2BlockNumber,
+      this.contracts.l2.OVM_L2ToL1MessagePasser.address,
+      messageSlot
+    )
+
+    // Sanity check that the value is set to 1 in the state
+    if (!stateTrieProof.storageValue.eq(1)) {
+      throw new Error(`Withdrawal hash ${withdrawalHash} is not set in state`)
+    }
+
+    const block = await (
+      this.l2Provider as ethers.providers.JsonRpcProvider
+    ).send('eth_getBlockByNumber', [
+      toRpcHexString(output.l2BlockNumber),
+      false,
+    ])
+
+    return [
+      {
+        outputRootProof: {
+          // TODO: Handle multiple versions in the future
+          version: ethers.constants.HashZero,
+          stateRoot: block.stateRoot,
+          withdrawerStorageRoot: stateTrieProof.storageRoot,
+          latestBlockhash: block.hash,
+        },
+        withdrawalProof: ethers.utils.RLP.encode(stateTrieProof.storageProof),
+        // withdrawalProof: toHexString(rlp.encode(stateTrieProof.storageProof)),
+      },
+      output,
+      // TODO(tynes): use better type, typechain?
+      {
+        messageNonce: withdrawal.withdrawalInitiated.nonce,
+        sender: withdrawal.withdrawalInitiated.sender,
+        target: withdrawal.withdrawalInitiated.target,
+        value: withdrawal.withdrawalInitiated.value,
+        minGasLimit: withdrawal.withdrawalInitiated.gasLimit,
+        message: withdrawal.withdrawalInitiated.data,
+      },
+    ]
   }
 
   public async sendMessage(
@@ -1033,15 +1286,30 @@ export class CrossChainMessenger implements ICrossChainMessenger {
         throw new Error(`cannot resend L2 to L1 message`)
       }
 
-      return this.contracts.l1.L1CrossDomainMessenger.populateTransaction.replayMessage(
+      if (this.bedrock) {
+        return this.populateTransaction.finalizeMessage(resolved, {
+          ...(opts || {}),
+          overrides: {
+            ...opts?.overrides,
+            gasLimit: messageGasLimit,
+          },
+        })
+      } else {
+        const legacyL1XDM = new ethers.Contract(
+          this.contracts.l1.L1CrossDomainMessenger.address,
+          getContractInterface('L1CrossDomainMessenger'),
+          this.l1SignerOrProvider
+        )
+        return legacyL1XDM.populateTransaction.replayMessage(
           resolved.target,
           resolved.sender,
           resolved.message,
           resolved.messageNonce,
-        resolved.gasLimit,
+          resolved.minGasLimit,
           messageGasLimit,
           opts?.overrides || {}
         )
+      }
     },
 
     finalizeMessage: async (
@@ -1055,8 +1323,40 @@ export class CrossChainMessenger implements ICrossChainMessenger {
         throw new Error(`cannot finalize L1 to L2 message`)
       }
 
+      if (this.bedrock) {
+        const [proof, output, withdrawalTx] = await this.getBedrockMessageProof(
+          message
+        )
+
+        return this.contracts.l1.OptimismPortal.populateTransaction.finalizeWithdrawalTransaction(
+          [
+            withdrawalTx.messageNonce,
+            withdrawalTx.sender,
+            withdrawalTx.target,
+            withdrawalTx.value,
+            withdrawalTx.minGasLimit,
+            withdrawalTx.message,
+          ],
+          output.l2BlockNumber,
+          [
+            proof.outputRootProof.version,
+            proof.outputRootProof.stateRoot,
+            proof.outputRootProof.withdrawerStorageRoot,
+            proof.outputRootProof.latestBlockhash,
+          ],
+          proof.withdrawalProof
+        )
+      } else {
+        // L1CrossDomainMessenger relayMessage is the only method that isn't fully backwards
+        // compatible, so we need to use the legacy interface. When we fully upgrade to Bedrock we
+        // should be able to remove this code.
         const proof = await this.getMessageProof(resolved)
-      return this.contracts.l1.L1CrossDomainMessenger.populateTransaction.relayMessage(
+        const legacyL1XDM = new ethers.Contract(
+          this.contracts.l1.L1CrossDomainMessenger.address,
+          getContractInterface('L1CrossDomainMessenger'),
+          this.l1SignerOrProvider
+        )
+        return legacyL1XDM.populateTransaction.relayMessage(
           resolved.target,
           resolved.sender,
           resolved.message,
@@ -1064,6 +1364,7 @@ export class CrossChainMessenger implements ICrossChainMessenger {
           proof,
           opts?.overrides || {}
         )
+      }
     },
 
     depositETH: async (

packages/sdk/src/interfaces/cross-chain-messenger.ts

@@ -6,8 +6,13 @@ import {
   TransactionResponse,
 } from '@ethersproject/abstract-provider'
 import { Signer } from '@ethersproject/abstract-signer'
+import {
+  BedrockCrossChainMessageProof,
+  BedrockOutputData,
+} from '@eth-optimism/core-utils'
 
 import {
+  CoreCrossChainMessage,
   MessageLike,
   MessageRequestLike,
   TransactionLike,
@@ -91,6 +96,11 @@ export interface ICrossChainMessenger {
    */
   l1BlockTimeSeconds: number
 
+  /**
+   * Whether or not Bedrock compatibility is enabled.
+   */
+  bedrock: boolean
+
   /**
    * Retrieves all cross chain messages sent within a given transaction.
    *
@@ -291,6 +301,16 @@ export interface ICrossChainMessenger {
    */
   getChallengePeriodSeconds(): Promise<number>
 
+  /**
+   * Returns the Bedrock output root that corresponds to the given message.
+   *
+   * @param message Message to get the Bedrock output root for.
+   * @returns Bedrock output root.
+   */
+  getMessageBedrockOutput(
+    message: MessageLike
+  ): Promise<BedrockOutputData | null>
+
   /**
    * Returns the state root that corresponds to a given message. This is the state root for the
    * block in which the transaction was included, as published to the StateCommitmentChain. If the
@@ -342,6 +362,18 @@ export interface ICrossChainMessenger {
    */
   getMessageProof(message: MessageLike): Promise<CrossChainMessageProof>
 
+  /**
+   * Generates the bedrock proof required to finalize an L2 to L1 message.
+   *
+   * @param message Message to generate a proof for.
+   * @returns Proof that can be used to finalize the message.
+   */
+  getBedrockMessageProof(
+    message: MessageLike
+  ): Promise<
+    [BedrockCrossChainMessageProof, BedrockOutputData, CoreCrossChainMessage]
+  >
+
   /**
    * Sends a given cross chain message. Where the message is sent depends on the direction attached
    * to the message itself.

packages/sdk/src/interfaces/types.ts

@@ -17,6 +17,7 @@ export enum L1ChainID {
   GOERLI = 5,
   KOVAN = 42,
   HARDHAT_LOCAL = 31337,
+  BEDROCK_LOCAL_DEVNET = 900,
 }
 
 /**
@@ -28,6 +29,7 @@ export enum L2ChainID {
   OPTIMISM_KOVAN = 69,
   OPTIMISM_HARDHAT_LOCAL = 31337,
   OPTIMISM_HARDHAT_DEVNET = 17,
+  OPTIMISM_BEDROCK_LOCAL_DEVNET = 901,
 }
 
 /**
@@ -40,6 +42,9 @@ export interface OEL1Contracts {
   StateCommitmentChain: Contract
   CanonicalTransactionChain: Contract
   BondManager: Contract
+  // Bedrock
+  OptimismPortal: Contract
+  L2OutputOracle: Contract
 }
 
 /**
@@ -48,6 +53,7 @@ export interface OEL1Contracts {
 export interface OEL2Contracts {
   L2CrossDomainMessenger: Contract
   L2StandardBridge: Contract
+  L2ToL1MessagePasser: Contract
   OVM_L1BlockNumber: Contract
   OVM_L2ToL1MessagePasser: Contract
   OVM_DeployerWhitelist: Contract
@@ -174,7 +180,9 @@ export interface CoreCrossChainMessage {
   sender: string
   target: string
   message: string
-  messageNonce: number
+  messageNonce: BigNumber
+  value: BigNumber
+  minGasLimit: BigNumber
 }
 
 /**
@@ -183,7 +191,6 @@ export interface CoreCrossChainMessage {
  */
 export interface CrossChainMessage extends CoreCrossChainMessage {
   direction: MessageDirection
-  gasLimit: number
   logIndex: number
   blockNumber: number
   transactionHash: string

packages/sdk/src/utils/chain-constants.ts

@@ -8,6 +8,7 @@ export const DEPOSIT_CONFIRMATION_BLOCKS: {
   [L2ChainID.OPTIMISM_KOVAN]: 12 as const,
   [L2ChainID.OPTIMISM_HARDHAT_LOCAL]: 2 as const,
   [L2ChainID.OPTIMISM_HARDHAT_DEVNET]: 2 as const,
+  [L2ChainID.OPTIMISM_BEDROCK_LOCAL_DEVNET]: 2 as const,
 }
 
 export const CHAIN_BLOCK_TIMES: {
@@ -17,4 +18,5 @@ export const CHAIN_BLOCK_TIMES: {
   [L1ChainID.GOERLI]: 15 as const,
   [L1ChainID.KOVAN]: 4 as const,
   [L1ChainID.HARDHAT_LOCAL]: 1 as const,
+  [L1ChainID.BEDROCK_LOCAL_DEVNET]: 15 as const,
 }

packages/sdk/src/utils/contracts.ts

 import { getContractInterface, predeploys } from '@eth-optimism/contracts'
+import { getContractInterface as getContractInterfaceBedrock } from '@eth-optimism/contracts-bedrock'
 import { ethers, Contract } from 'ethers'
 
 import { toAddress } from './coercion'
@@ -23,9 +24,11 @@ import {
 
 /**
  * Full list of default L2 contract addresses.
+ * TODO(tynes): migrate to predeploys from contracts-bedrock
  */
 export const DEFAULT_L2_CONTRACT_ADDRESSES: OEL2ContractsLike = {
   L2CrossDomainMessenger: predeploys.L2CrossDomainMessenger,
+  L2ToL1MessagePasser: predeploys.OVM_L2ToL1MessagePasser,
   L2StandardBridge: predeploys.L2StandardBridge,
   OVM_L1BlockNumber: predeploys.OVM_L1BlockNumber,
   OVM_L2ToL1MessagePasser: predeploys.OVM_L2ToL1MessagePasser,
@@ -65,6 +68,8 @@ export const CONTRACT_ADDRESSES: {
       CanonicalTransactionChain:
         '0x5E4e65926BA27467555EB562121fac00D24E9dD2' as const,
       BondManager: '0xcd626E1328b41fCF24737F137BcD4CE0c32bc8d1' as const,
+      OptimismPortal: '0x0000000000000000000000000000000000000000' as const,
+      L2OutputOracle: '0x0000000000000000000000000000000000000000' as const,
     },
     l2: DEFAULT_L2_CONTRACT_ADDRESSES,
   },
@@ -79,6 +84,8 @@ export const CONTRACT_ADDRESSES: {
       CanonicalTransactionChain:
         '0xf7B88A133202d41Fe5E2Ab22e6309a1A4D50AF74' as const,
       BondManager: '0xc5a603d273E28185c18Ba4d26A0024B2d2F42740' as const,
+      OptimismPortal: '0x0000000000000000000000000000000000000000' as const,
+      L2OutputOracle: '0x0000000000000000000000000000000000000000' as const,
     },
     l2: DEFAULT_L2_CONTRACT_ADDRESSES,
   },
@@ -93,6 +100,8 @@ export const CONTRACT_ADDRESSES: {
       CanonicalTransactionChain:
         '0x607F755149cFEB3a14E1Dc3A4E2450Cde7dfb04D' as const,
       BondManager: '0xfC2ab6987C578218f99E85d61Dcf4814A26637Bd' as const,
+      OptimismPortal: '0x0000000000000000000000000000000000000000' as const,
+      L2OutputOracle: '0x0000000000000000000000000000000000000000' as const,
     },
     l2: DEFAULT_L2_CONTRACT_ADDRESSES,
   },
@@ -107,6 +116,8 @@ export const CONTRACT_ADDRESSES: {
       CanonicalTransactionChain:
         '0xCf7Ed3AccA5a467e9e704C703E8D87F634fB0Fc9' as const,
       BondManager: '0x5FC8d32690cc91D4c39d9d3abcBD16989F875707' as const,
+      OptimismPortal: '0x0000000000000000000000000000000000000000' as const,
+      L2OutputOracle: '0x0000000000000000000000000000000000000000' as const,
     },
     l2: DEFAULT_L2_CONTRACT_ADDRESSES,
   },
@@ -121,6 +132,24 @@ export const CONTRACT_ADDRESSES: {
       CanonicalTransactionChain:
         '0xCf7Ed3AccA5a467e9e704C703E8D87F634fB0Fc9' as const,
       BondManager: '0x5FC8d32690cc91D4c39d9d3abcBD16989F875707' as const,
+      OptimismPortal: '0x0000000000000000000000000000000000000000' as const,
+      L2OutputOracle: '0x0000000000000000000000000000000000000000' as const,
+    },
+    l2: DEFAULT_L2_CONTRACT_ADDRESSES,
+  },
+  [L2ChainID.OPTIMISM_BEDROCK_LOCAL_DEVNET]: {
+    l1: {
+      AddressManager: '0x5FbDB2315678afecb367f032d93F642f64180aa3' as const,
+      L1CrossDomainMessenger:
+        '0x0165878A594ca255338adfa4d48449f69242Eb8F' as const,
+      L1StandardBridge: '0x8A791620dd6260079BF849Dc5567aDC3F2FdC318' as const,
+      StateCommitmentChain:
+        '0xDc64a140Aa3E981100a9becA4E685f962f0cF6C9' as const,
+      CanonicalTransactionChain:
+        '0xCf7Ed3AccA5a467e9e704C703E8D87F634fB0Fc9' as const,
+      BondManager: '0x5FC8d32690cc91D4c39d9d3abcBD16989F875707' as const,
+      OptimismPortal: '0xCf7Ed3AccA5a467e9e704C703E8D87F634fB0Fc9' as const,
+      L2OutputOracle: '0x5FbDB2315678afecb367f032d93F642f64180aa3' as const,
     },
     l2: DEFAULT_L2_CONTRACT_ADDRESSES,
   },
@@ -196,11 +225,21 @@ export const getOEContract = (
     )
   }
 
+  // Bedrock interfaces are backwards compatible. We can prefer Bedrock interfaces over legacy
+  // interfaces if they exist.
+  const name = NAME_REMAPPING[contractName] || contractName
+  let iface: ethers.utils.Interface
+  try {
+    iface = getContractInterfaceBedrock(name)
+  } catch (err) {
+    iface = getContractInterface(name)
+  }
+
   return new Contract(
     toAddress(
       opts.address || addresses.l1[contractName] || addresses.l2[contractName]
     ),
-    getContractInterface(NAME_REMAPPING[contractName] || contractName),
+    iface,
     opts.signerOrProvider
   )
 }
@@ -235,6 +274,8 @@ export const getAllOEContracts = (
       StateCommitmentChain: undefined,
       CanonicalTransactionChain: undefined,
       BondManager: undefined,
+      OptimismPortal: undefined,
+      L2OutputOracle: undefined,
     },
     l2: DEFAULT_L2_CONTRACT_ADDRESSES,
   }

packages/sdk/src/utils/index.ts

 export * from './coercion'
 export * from './contracts'
-export * from './message-encoding'
 export * from './type-utils'
 export * from './misc-utils'
 export * from './merkle-utils'

packages/sdk/src/utils/merkle-utils.ts

 /* Imports: External */
-import { ethers } from 'ethers'
+import { ethers, BigNumber } from 'ethers'
 import {
   fromHexString,
   toHexString,
   toRpcHexString,
 } from '@eth-optimism/core-utils'
 import { MerkleTree } from 'merkletreejs'
-import * as rlp from 'rlp'
 
 /**
  * Generates a Merkle proof (using the particular scheme we use within Lib_MerkleTree).
@@ -60,8 +59,10 @@ export const makeStateTrieProof = async (
   address: string,
   slot: string
 ): Promise<{
-  accountProof: string
-  storageProof: string
+  accountProof: string[]
+  storageProof: string[]
+  storageValue: BigNumber
+  storageRoot: string
 }> => {
   const proof = await provider.send('eth_getProof', [
     address,
@@ -70,7 +71,9 @@ export const makeStateTrieProof = async (
   ])
 
   return {
-    accountProof: toHexString(rlp.encode(proof.accountProof)),
-    storageProof: toHexString(rlp.encode(proof.storageProof[0].proof)),
+    accountProof: proof.accountProof,
+    storageProof: proof.storageProof[0].proof,
+    storageValue: BigNumber.from(proof.storageProof[0].value),
+    storageRoot: proof.storageHash,
   }
 }

packages/sdk/src/utils/message-encoding.ts

-import { getContractInterface } from '@eth-optimism/contracts'
-import { ethers } from 'ethers'
-
-import { CoreCrossChainMessage } from '../interfaces'
-
-/**
- * Returns the canonical encoding of a cross chain message. This encoding is used in various
- * locations within the Optimism smart contracts.
- *
- * @param message Cross chain message to encode.
- * @returns Canonical encoding of the message.
- */
-export const encodeCrossChainMessage = (
-  message: CoreCrossChainMessage
-): string => {
-  return getContractInterface('L2CrossDomainMessenger').encodeFunctionData(
-    'relayMessage',
-    [message.target, message.sender, message.message, message.messageNonce]
-  )
-}
-
-/**
- * Returns the canonical hash of a cross chain message. This hash is used in various locations
- * within the Optimism smart contracts and is the keccak256 hash of the result of
- * encodeCrossChainMessage.
- *
- * @param message Cross chain message to hash.
- * @returns Canonical hash of the message.
- */
-export const hashCrossChainMessage = (
-  message: CoreCrossChainMessage
-): string => {
-  return ethers.utils.solidityKeccak256(
-    ['bytes'],
-    [encodeCrossChainMessage(message)]
-  )
-}

packages/sdk/tasks/deposit.ts

+import { task, types } from 'hardhat/config'
+import '@nomiclabs/hardhat-ethers'
+import 'hardhat-deploy'
+import {
+  predeploys,
+  getContractInterface,
+} from '@eth-optimism/contracts-bedrock'
+import { Event } from 'ethers'
+
+import {
+  CrossChainMessenger,
+  StandardBridgeAdapter,
+  MessageStatus,
+} from '../src'
+
+// TODO(tynes): this task could be modularized in the future
+// so that it can deposit an arbitrary token. Right now it
+// deploys a WETH9 contract, mints some WETH9 and then
+// deposits that into L2 through the StandardBridge
+task('deposit', 'Deposits WETH9 onto L2.')
+  .addParam(
+    'l2ProviderUrl',
+    'L2 provider URL.',
+    'http://localhost:9545',
+    types.string
+  )
+  .addParam(
+    'opNodeProviderUrl',
+    'op-node provider URL',
+    'http://localhost:7545',
+    types.string
+  )
+  .setAction(async (args, hre) => {
+    const { utils } = hre.ethers
+
+    const signers = await hre.ethers.getSigners()
+    if (signers.length === 0) {
+      throw new Error('No configured signers')
+    }
+    // Use the first configured signer for simplicity
+    const signer = signers[0]
+    const address = await signer.getAddress()
+    console.log(`Using signer ${address}`)
+
+    // Ensure that the signer has a balance before trying to
+    // do anything
+    const balance = await signer.getBalance()
+    if (balance.eq(0)) {
+      throw new Error('Signer has no balance')
+    }
+
+    const l2Provider = new hre.ethers.providers.StaticJsonRpcProvider(
+      args.l2ProviderUrl
+    )
+
+    const Deployment__L2OutputOracleProxy = await hre.deployments.get(
+      'L2OutputOracleProxy'
+    )
+
+    const l2Signer = new hre.ethers.Wallet(
+      hre.network.config.accounts[0],
+      l2Provider
+    )
+
+    const Artifact__WETH9 = await hre.deployments.getArtifact('WETH9')
+    const Factory__WETH9 = new hre.ethers.ContractFactory(
+      Artifact__WETH9.abi,
+      Artifact__WETH9.bytecode,
+      signer
+    )
+
+    const Deployment__OptimismMintableERC20TokenFactory =
+      await hre.deployments.get('OptimismMintableERC20Factory')
+
+    const Deployment__OptimismPortalProxy = await hre.deployments.get(
+      'OptimismPortalProxy'
+    )
+
+    const Deployment__L1StandardBridgeProxy = await hre.deployments.get(
+      'L1StandardBridgeProxy'
+    )
+
+    const Deployment__L1CrossDomainMessengerProxy = await hre.deployments.get(
+      'L1CrossDomainMessengerProxy'
+    )
+
+    const messenger = new CrossChainMessenger({
+      l1SignerOrProvider: signer,
+      l2SignerOrProvider: l2Signer,
+      l1ChainId: await signer.getChainId(),
+      l2ChainId: await l2Signer.getChainId(),
+      bridges: {
+        Standard: {
+          Adapter: StandardBridgeAdapter,
+          l1Bridge: Deployment__L1StandardBridgeProxy.address,
+          l2Bridge: predeploys.L2StandardBridge,
+        },
+      },
+      contracts: {
+        l1: {
+          L1StandardBridge: Deployment__L1StandardBridgeProxy.address,
+          L1CrossDomainMessenger:
+            Deployment__L1CrossDomainMessengerProxy.address,
+          L2OutputOracle: Deployment__L2OutputOracleProxy.address,
+          OptimismPortal: Deployment__OptimismPortalProxy.address,
+        },
+      },
+      bedrock: true,
+    })
+
+    const OptimismMintableERC20TokenFactory = await hre.ethers.getContractAt(
+      Deployment__OptimismMintableERC20TokenFactory.abi,
+      predeploys.OptimismMintableERC20Factory,
+      l2Signer
+    )
+
+    console.log('Deploying WETH9 to L1')
+    const WETH9 = await Factory__WETH9.deploy()
+    await WETH9.deployTransaction.wait()
+    console.log(`Deployed to ${WETH9.address}`)
+
+    console.log('Creating L2 WETH9')
+    const deployTx =
+      await OptimismMintableERC20TokenFactory.createOptimismMintableERC20(
+        WETH9.address,
+        'L2 Wrapped Ether',
+        'L2-WETH9'
+      )
+    const receipt = await deployTx.wait()
+    const event = receipt.events.find(
+      (e: Event) => e.event === 'OptimismMintableERC20Created'
+    )
+    if (!event) {
+      throw new Error('Unable to find OptimismMintableERC20Created event')
+    }
+    // TODO(tynes): may need to be updated based on
+    // https://github.com/ethereum-optimism/optimism/pull/3104
+    const l2WethAddress = event.args.remoteToken
+    console.log(`Deployed to ${l2WethAddress}`)
+
+    console.log('Wrapping ETH')
+    const deposit = await signer.sendTransaction({
+      value: utils.parseEther('1'),
+      to: WETH9.address,
+    })
+    await deposit.wait()
+    console.log('ETH wrapped')
+
+    console.log(`Approving WETH9 for deposit`)
+    const approvalTx = await messenger.approveERC20(
+      WETH9.address,
+      l2WethAddress,
+      hre.ethers.constants.MaxUint256
+    )
+    await approvalTx.wait()
+    console.log('WETH9 approved')
+
+    console.log('Depositing WETH9 to L2')
+    const depositTx = await messenger.depositERC20(
+      WETH9.address,
+      l2WethAddress,
+      utils.parseEther('1')
+    )
+    await depositTx.wait()
+    console.log('ERC20 deposited')
+
+    const messageReceipt = await messenger.waitForMessageReceipt(depositTx)
+    if (messageReceipt.receiptStatus !== 1) {
+      throw new Error('deposit failed')
+    }
+
+    const L2WETH9 = new hre.ethers.Contract(
+      l2WethAddress,
+      getContractInterface('OptimismMintableERC20'),
+      l2Signer
+    )
+
+    const l2Balance = await L2WETH9.balanceOf(await signer.getAddress())
+    if (l2Balance.lt(utils.parseEther('1'))) {
+      throw new Error('bad deposit')
+    }
+    console.log('Deposit success')
+
+    console.log('Starting withdrawal')
+    const preBalance = await WETH9.balanceOf(signer.address)
+    const tx = await messenger.withdrawERC20(
+      WETH9.address,
+      l2WethAddress,
+      utils.parseEther('1')
+    )
+    await tx.wait()
+
+    setInterval(async () => {
+      const currentStatus = await messenger.getMessageStatus(tx)
+      console.log(`Message status: ${MessageStatus[currentStatus]}`)
+    }, 3000)
+
+    const now = Math.floor(Date.now() / 1000)
+
+    console.log('Waiting for message to be able to be relayed')
+    await messenger.waitForMessageStatus(tx, MessageStatus.READY_FOR_RELAY)
+
+    const finalize = await messenger.finalizeMessage(tx)
+    await finalize.wait()
+    console.log(`Took ${Math.floor(Date.now() / 1000) - now} seconds`)
+
+    const postBalance = await WETH9.balanceOf(signer.address)
+
+    const expectedBalance = preBalance.add(utils.parseEther('1'))
+    if (!expectedBalance.eq(postBalance)) {
+      throw new Error('Balance mismatch')
+    }
+    console.log('Withdrawal success')
+  })

packages/sdk/test/contracts/MockBridge.sol

@@ -80,7 +80,8 @@ contract MockBridge {
                 address(0),
                 hex"1234",
                 1234,
-                12345678
+                12345678,
+                0
             )
         );
     }
@@ -101,7 +102,8 @@ contract MockBridge {
                 address(0),
                 hex"1234",
                 1234,
-                12345678
+                12345678,
+                0
             )
         );
     }

packages/sdk/test/contracts/MockMessenger.sol

@@ -48,7 +48,8 @@ contract MockMessenger is ICrossDomainMessenger {
         address sender;
         bytes message;
         uint256 messageNonce;
-        uint256 gasLimit;
+        uint256 minGasLimit;
+        uint256 value;
     }
 
     function doNothing() public {
@@ -63,7 +64,7 @@ contract MockMessenger is ICrossDomainMessenger {
             _params.sender,
             _params.message,
             _params.messageNonce,
-            _params.gasLimit
+            _params.minGasLimit
         );
     }
 

packages/sdk/test/cross-chain-messenger.spec.ts

 import { Provider } from '@ethersproject/abstract-provider'
-import { expectApprox } from '@eth-optimism/core-utils'
+import { expectApprox, hashCrossDomainMessage } from '@eth-optimism/core-utils'
 import { predeploys } from '@eth-optimism/contracts'
 import { Contract } from 'ethers'
 import { ethers } from 'hardhat'
@@ -8,7 +8,6 @@ import { expect } from './setup'
 import {
   MessageDirection,
   CONTRACT_ADDRESSES,
-  hashCrossChainMessage,
   omit,
   MessageStatus,
   CrossChainMessage,
@@ -18,7 +17,7 @@ import {
   L1ChainID,
   L2ChainID,
 } from '../src'
-import { DUMMY_MESSAGE } from './helpers'
+import { DUMMY_MESSAGE, DUMMY_EXTENDED_MESSAGE } from './helpers'
 
 describe('CrossChainMessenger', () => {
   let l1Signer: any
@@ -202,6 +201,8 @@ describe('CrossChainMessenger', () => {
                 StateCommitmentChain: '0x' + '14'.repeat(20),
                 CanonicalTransactionChain: '0x' + '15'.repeat(20),
                 BondManager: '0x' + '16'.repeat(20),
+                OptimismPortal: '0x' + '17'.repeat(20),
+                L2OutputOracle: '0x' + '18'.repeat(20),
               },
               l2: {
                 L2CrossDomainMessenger: '0x' + '22'.repeat(20),
@@ -318,7 +319,8 @@ describe('CrossChainMessenger', () => {
                     target: message.target,
                     message: message.message,
                     messageNonce: ethers.BigNumber.from(message.messageNonce),
-                    gasLimit: ethers.BigNumber.from(message.gasLimit),
+                    minGasLimit: ethers.BigNumber.from(message.minGasLimit),
+                    value: ethers.BigNumber.from(message.value),
                     logIndex: i,
                     blockNumber: tx.blockNumber,
                     transactionHash: tx.hash,
@@ -370,7 +372,8 @@ describe('CrossChainMessenger', () => {
                     target: message.target,
                     message: message.message,
                     messageNonce: ethers.BigNumber.from(message.messageNonce),
-                    gasLimit: ethers.BigNumber.from(message.gasLimit),
+                    minGasLimit: ethers.BigNumber.from(message.minGasLimit),
+                    value: ethers.BigNumber.from(message.value),
                     logIndex: i,
                     blockNumber: tx.blockNumber,
                     transactionHash: tx.hash,
@@ -497,15 +500,8 @@ describe('CrossChainMessenger', () => {
     describe('when the input is a CrossChainMessage', () => {
       it('should return the input', async () => {
         const message = {
+          ...DUMMY_EXTENDED_MESSAGE,
           direction: MessageDirection.L1_TO_L2,
-          target: '0x' + '11'.repeat(20),
-          sender: '0x' + '22'.repeat(20),
-          message: '0x' + '33'.repeat(64),
-          messageNonce: 1234,
-          gasLimit: 0,
-          logIndex: 0,
-          blockNumber: 1234,
-          transactionHash: '0x' + '44'.repeat(32),
         }
 
         expect(await messenger.toCrossChainMessage(message)).to.deep.equal(
@@ -655,7 +651,14 @@ describe('CrossChainMessenger', () => {
           )
 
           await l2Messenger.triggerRelayedMessageEvents([
-            hashCrossChainMessage(message),
+            hashCrossDomainMessage(
+              message.messageNonce,
+              message.sender,
+              message.target,
+              message.value,
+              message.minGasLimit,
+              message.message
+            ),
           ])
 
           expect(await messenger.getMessageStatus(message)).to.equal(
@@ -671,7 +674,14 @@ describe('CrossChainMessenger', () => {
           )
 
           await l2Messenger.triggerFailedRelayedMessageEvents([
-            hashCrossChainMessage(message),
+            hashCrossDomainMessage(
+              message.messageNonce,
+              message.sender,
+              message.target,
+              message.value,
+              message.minGasLimit,
+              message.message
+            ),
           ])
 
           expect(await messenger.getMessageStatus(message)).to.equal(
@@ -722,7 +732,14 @@ describe('CrossChainMessenger', () => {
             ethers.provider.send('evm_mine', [])
 
             await l1Messenger.triggerRelayedMessageEvents([
-              hashCrossChainMessage(message),
+              hashCrossDomainMessage(
+                message.messageNonce,
+                message.sender,
+                message.target,
+                message.value,
+                message.minGasLimit,
+                message.message
+              ),
             ])
 
             expect(await messenger.getMessageStatus(message)).to.equal(
@@ -744,7 +761,14 @@ describe('CrossChainMessenger', () => {
             ethers.provider.send('evm_mine', [])
 
             await l1Messenger.triggerFailedRelayedMessageEvents([
-              hashCrossChainMessage(message),
+              hashCrossDomainMessage(
+                message.messageNonce,
+                message.sender,
+                message.target,
+                message.value,
+                message.minGasLimit,
+                message.message
+              ),
             ])
 
             expect(await messenger.getMessageStatus(message)).to.equal(
@@ -821,19 +845,19 @@ describe('CrossChainMessenger', () => {
       describe('when the relay was successful', () => {
         it('should return the receipt of the transaction that relayed the message', async () => {
           const message = {
+            ...DUMMY_EXTENDED_MESSAGE,
             direction: MessageDirection.L1_TO_L2,
-            target: '0x' + '11'.repeat(20),
-            sender: '0x' + '22'.repeat(20),
-            message: '0x' + '33'.repeat(64),
-            messageNonce: 1234,
-            gasLimit: 0,
-            logIndex: 0,
-            blockNumber: 1234,
-            transactionHash: '0x' + '44'.repeat(32),
           }
 
           const tx = await l2Messenger.triggerRelayedMessageEvents([
-            hashCrossChainMessage(message),
+            hashCrossDomainMessage(
+              message.messageNonce,
+              message.sender,
+              message.target,
+              message.value,
+              message.minGasLimit,
+              message.message
+            ),
           ])
 
           const messageReceipt = await messenger.getMessageReceipt(message)
@@ -852,19 +876,19 @@ describe('CrossChainMessenger', () => {
       describe('when the relay failed', () => {
         it('should return the receipt of the transaction that attempted to relay the message', async () => {
           const message = {
+            ...DUMMY_EXTENDED_MESSAGE,
             direction: MessageDirection.L1_TO_L2,
-            target: '0x' + '11'.repeat(20),
-            sender: '0x' + '22'.repeat(20),
-            message: '0x' + '33'.repeat(64),
-            messageNonce: 1234,
-            gasLimit: 0,
-            logIndex: 0,
-            blockNumber: 1234,
-            transactionHash: '0x' + '44'.repeat(32),
           }
 
           const tx = await l2Messenger.triggerFailedRelayedMessageEvents([
-            hashCrossChainMessage(message),
+            hashCrossDomainMessage(
+              message.messageNonce,
+              message.sender,
+              message.target,
+              message.value,
+              message.minGasLimit,
+              message.message
+            ),
           ])
 
           const messageReceipt = await messenger.getMessageReceipt(message)
@@ -883,23 +907,30 @@ describe('CrossChainMessenger', () => {
       describe('when the relay failed more than once', () => {
         it('should return the receipt of the last transaction that attempted to relay the message', async () => {
           const message = {
+            ...DUMMY_EXTENDED_MESSAGE,
             direction: MessageDirection.L1_TO_L2,
-            target: '0x' + '11'.repeat(20),
-            sender: '0x' + '22'.repeat(20),
-            message: '0x' + '33'.repeat(64),
-            messageNonce: 1234,
-            gasLimit: 0,
-            logIndex: 0,
-            blockNumber: 1234,
-            transactionHash: '0x' + '44'.repeat(32),
           }
 
           await l2Messenger.triggerFailedRelayedMessageEvents([
-            hashCrossChainMessage(message),
+            hashCrossDomainMessage(
+              message.messageNonce,
+              message.sender,
+              message.target,
+              message.value,
+              message.minGasLimit,
+              message.message
+            ),
           ])
 
           const tx = await l2Messenger.triggerFailedRelayedMessageEvents([
-            hashCrossChainMessage(message),
+            hashCrossDomainMessage(
+              message.messageNonce,
+              message.sender,
+              message.target,
+              message.value,
+              message.minGasLimit,
+              message.message
+            ),
           ])
 
           const messageReceipt = await messenger.getMessageReceipt(message)
@@ -919,15 +950,8 @@ describe('CrossChainMessenger', () => {
     describe('when the message has not been relayed', () => {
       it('should return null', async () => {
         const message = {
+          ...DUMMY_EXTENDED_MESSAGE,
           direction: MessageDirection.L1_TO_L2,
-          target: '0x' + '11'.repeat(20),
-          sender: '0x' + '22'.repeat(20),
-          message: '0x' + '33'.repeat(64),
-          messageNonce: 1234,
-          gasLimit: 0,
-          logIndex: 0,
-          blockNumber: 1234,
-          transactionHash: '0x' + '44'.repeat(32),
         }
 
         await l2Messenger.doNothing()
@@ -965,19 +989,19 @@ describe('CrossChainMessenger', () => {
     describe('when the message receipt already exists', () => {
       it('should immediately return the receipt', async () => {
         const message = {
+          ...DUMMY_EXTENDED_MESSAGE,
           direction: MessageDirection.L1_TO_L2,
-          target: '0x' + '11'.repeat(20),
-          sender: '0x' + '22'.repeat(20),
-          message: '0x' + '33'.repeat(64),
-          messageNonce: 1234,
-          gasLimit: 0,
-          logIndex: 0,
-          blockNumber: 1234,
-          transactionHash: '0x' + '44'.repeat(32),
         }
 
         const tx = await l2Messenger.triggerRelayedMessageEvents([
-          hashCrossChainMessage(message),
+          hashCrossDomainMessage(
+            message.messageNonce,
+            message.sender,
+            message.target,
+            message.value,
+            message.minGasLimit,
+            message.message
+          ),
         ])
 
         const messageReceipt = await messenger.waitForMessageReceipt(message)
@@ -997,20 +1021,20 @@ describe('CrossChainMessenger', () => {
       describe('when no extra options are provided', () => {
         it('should wait for the receipt to be published', async () => {
           const message = {
+            ...DUMMY_EXTENDED_MESSAGE,
             direction: MessageDirection.L1_TO_L2,
-            target: '0x' + '11'.repeat(20),
-            sender: '0x' + '22'.repeat(20),
-            message: '0x' + '33'.repeat(64),
-            messageNonce: 1234,
-            gasLimit: 0,
-            logIndex: 0,
-            blockNumber: 1234,
-            transactionHash: '0x' + '44'.repeat(32),
           }
 
           setTimeout(async () => {
             await l2Messenger.triggerRelayedMessageEvents([
-              hashCrossChainMessage(message),
+              hashCrossDomainMessage(
+                message.messageNonce,
+                message.sender,
+                message.target,
+                message.value,
+                message.minGasLimit,
+                message.message
+              ),
             ])
           }, 5000)
 
@@ -1030,15 +1054,8 @@ describe('CrossChainMessenger', () => {
       describe('when a timeout is provided', () => {
         it('should throw an error if the timeout is reached', async () => {
           const message = {
+            ...DUMMY_EXTENDED_MESSAGE,
             direction: MessageDirection.L1_TO_L2,
-            target: '0x' + '11'.repeat(20),
-            sender: '0x' + '22'.repeat(20),
-            message: '0x' + '33'.repeat(64),
-            messageNonce: 1234,
-            gasLimit: 0,
-            logIndex: 0,
-            blockNumber: 1234,
-            transactionHash: '0x' + '44'.repeat(32),
           }
 
           await expect(
@@ -1222,7 +1239,14 @@ describe('CrossChainMessenger', () => {
 
           await l1Messenger.triggerSentMessageEvents([message])
           await l2Messenger.triggerRelayedMessageEvents([
-            hashCrossChainMessage(message),
+            hashCrossDomainMessage(
+              message.messageNonce,
+              message.sender,
+              message.target,
+              message.value,
+              message.minGasLimit,
+              message.message
+            ),
           ])
 
           expect(
@@ -1294,7 +1318,14 @@ describe('CrossChainMessenger', () => {
 
           await l2Messenger.triggerSentMessageEvents([message])
           await l1Messenger.triggerRelayedMessageEvents([
-            hashCrossChainMessage(message),
+            hashCrossDomainMessage(
+              message.messageNonce,
+              message.sender,
+              message.target,
+              message.value,
+              message.minGasLimit,
+              message.message
+            ),
           ])
 
           expect(

packages/sdk/test/helpers/constants.ts

+import { ethers } from 'ethers'
+
 export const DUMMY_MESSAGE = {
   target: '0x' + '11'.repeat(20),
   sender: '0x' + '22'.repeat(20),
   message: '0x' + '33'.repeat(64),
-  messageNonce: 1234,
-  gasLimit: 100000,
+  messageNonce: ethers.BigNumber.from(1234),
+  value: ethers.BigNumber.from(0),
+  minGasLimit: ethers.BigNumber.from(5678),
+}
+
+export const DUMMY_EXTENDED_MESSAGE = {
+  ...DUMMY_MESSAGE,
+  logIndex: 0,
+  blockNumber: 1234,
+  transactionHash: '0x' + '44'.repeat(32),
 }

packages/sdk/test/utils/message-encoding.spec.ts

-import { Contract, Signer } from 'ethers'
-import { ethers } from 'hardhat'
-import { getContractFactory } from '@eth-optimism/contracts'
-
-import { expect } from '../setup'
-import {
-  CoreCrossChainMessage,
-  encodeCrossChainMessage,
-  hashCrossChainMessage,
-} from '../../src'
-
-describe('message encoding utils', () => {
-  let signers: Signer[]
-  before(async () => {
-    signers = (await ethers.getSigners()) as any
-  })
-
-  describe('encodeCrossChainMessage', () => {
-    let Lib_CrossDomainUtils: Contract
-    before(async () => {
-      Lib_CrossDomainUtils = (await getContractFactory(
-        'TestLib_CrossDomainUtils',
-        signers[0]
-      ).deploy()) as any
-    })
-
-    it('should properly encode a message', async () => {
-      const message: CoreCrossChainMessage = {
-        target: '0x' + '11'.repeat(20),
-        sender: '0x' + '22'.repeat(20),
-        message: '0x' + '1234'.repeat(32),
-        messageNonce: 1234,
-      }
-
-      const actual = encodeCrossChainMessage(message)
-      const expected = await Lib_CrossDomainUtils.encodeXDomainCalldata(
-        message.target,
-        message.sender,
-        message.message,
-        message.messageNonce
-      )
-      expect(actual).to.equal(expected)
-    })
-  })
-
-  describe('hashCrossChainMessage', () => {
-    let MessageEncodingHelper: Contract
-    before(async () => {
-      MessageEncodingHelper = (await (
-        await ethers.getContractFactory('MessageEncodingHelper')
-      ).deploy()) as any
-    })
-
-    it('should properly hash a message', async () => {
-      const message: CoreCrossChainMessage = {
-        target: '0x' + '11'.repeat(20),
-        sender: '0x' + '22'.repeat(20),
-        message: '0x' + '1234'.repeat(32),
-        messageNonce: 1234,
-      }
-
-      const actual = hashCrossChainMessage(message)
-      const expected = await MessageEncodingHelper.hashXDomainCalldata(
-        message.target,
-        message.sender,
-        message.message,
-        message.messageNonce
-      )
-      expect(actual).to.equal(expected)
-    })
-  })
-})

packages/sdk/tsconfig.json

 {
   "extends": "../../tsconfig.json",
-
   "compilerOptions": {
     "rootDir": "./src",
     "outDir": "./dist"
   },
-
   "include": [
     "src/**/*"
   ]