[
  {
    "inputs": [],
    "name": "BlockHashNotPresent",
    "type": "error"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": true,
        "internalType": "uint256",
        "name": "blockNumber",
        "type": "uint256"
      },
      {
        "indexed": true,
        "internalType": "Hash",
        "name": "blockHash",
        "type": "bytes32"
      },
      {
        "indexed": true,
        "internalType": "Timestamp",
        "name": "childTimestamp",
        "type": "uint64"
      }
    ],
    "name": "Checkpoint",
    "type": "event"
  },
  {
    "inputs": [],
    "name": "checkpoint",
    "outputs": [
      {
        "internalType": "uint256",
        "name": "blockNumber_",
        "type": "uint256"
      }
    ],
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "inputs": [
      {
        "internalType": "uint256",
        "name": "_blockNumber",
        "type": "uint256"
      }
    ],
    "name": "load",
    "outputs": [
      {
        "components": [
          {
            "internalType": "Hash",
            "name": "hash",
            "type": "bytes32"
          },
          {
            "internalType": "Timestamp",
            "name": "childTimestamp",
            "type": "uint64"
          }
        ],
        "internalType": "struct BlockOracle.BlockInfo",
        "name": "blockInfo_",
        "type": "tuple"
      }
    ],
    "stateMutability": "view",
    "type": "function"
  },
  {
    "inputs": [],
    "name": "version",
    "outputs": [
      {
        "internalType": "string",
        "name": "",
        "type": "string"
      }
    ],
    "stateMutability": "view",
    "type": "function"
  }
]