Goerli Testnet

Contract

0xeDC0B1D3De4496E0D917af42f29Cb71Eb2982319
Source Code
Transaction Hash
Method
Block
From
To
Value
Report Headers101801392023-12-08 19:12:1253 mins ago1702062732IN
0xeDC0B1...b2982319
0 ETH00.00000014
Report Headers101799162023-12-08 18:13:361 hr 52 mins ago1702059216IN
0xeDC0B1...b2982319
0 ETH00.00000005
Report Headers101796922023-12-08 17:12:122 hrs 53 mins ago1702055532IN
0xeDC0B1...b2982319
0 ETH00.00000001
Report Headers101794662023-12-08 16:12:363 hrs 53 mins ago1702051956IN
0xeDC0B1...b2982319
0 ETH00.00000002
Report Headers101792442023-12-08 15:12:244 hrs 53 mins ago1702048344IN
0xeDC0B1...b2982319
0 ETH00.00000003
Report Headers101790202023-12-08 14:12:245 hrs 53 mins ago1702044744IN
0xeDC0B1...b2982319
0 ETH00.00000002
Report Headers101787922023-12-08 13:12:246 hrs 53 mins ago1702041144IN
0xeDC0B1...b2982319
0 ETH00.00000006
Report Headers101785562023-12-08 12:12:127 hrs 53 mins ago1702037532IN
0xeDC0B1...b2982319
0 ETH00.00000001
Report Headers101783342023-12-08 11:12:128 hrs 53 mins ago1702033932IN
0xeDC0B1...b2982319
0 ETH00.00000002
Report Headers101780992023-12-08 10:14:009 hrs 51 mins ago1702030440IN
0xeDC0B1...b2982319
0 ETH00.00000002
Report Headers101778562023-12-08 9:12:1210 hrs 53 mins ago1702026732IN
0xeDC0B1...b2982319
0 ETH00.00000002
Report Headers101776172023-12-08 8:12:4811 hrs 52 mins ago1702023168IN
0xeDC0B1...b2982319
0 ETH00.00000002
Report Headers101773942023-12-08 7:12:1212 hrs 53 mins ago1702019532IN
0xeDC0B1...b2982319
0 ETH00.00000001
Report Headers101771662023-12-08 6:12:1213 hrs 53 mins ago1702015932IN
0xeDC0B1...b2982319
0 ETH00.00000001
Report Headers101769232023-12-08 5:12:1214 hrs 53 mins ago1702012332IN
0xeDC0B1...b2982319
0 ETH00.00000001
Report Headers101766922023-12-08 4:12:2415 hrs 53 mins ago1702008744IN
0xeDC0B1...b2982319
0 ETH00.00000002
Report Headers101764742023-12-08 3:12:1216 hrs 53 mins ago1702005132IN
0xeDC0B1...b2982319
0 ETH00.00000001
Report Headers101762512023-12-08 2:12:1217 hrs 53 mins ago1702001532IN
0xeDC0B1...b2982319
0 ETH00.00000001
Report Headers101760212023-12-08 1:13:3618 hrs 52 mins ago1701998016IN
0xeDC0B1...b2982319
0 ETH00.00000001
Report Headers101757912023-12-08 0:12:0019 hrs 53 mins ago1701994320IN
0xeDC0B1...b2982319
0 ETH00.00000001
Report Headers101755602023-12-07 23:12:1220 hrs 53 mins ago1701990732IN
0xeDC0B1...b2982319
0 ETH00.00000001
Report Headers101753282023-12-07 22:12:1221 hrs 53 mins ago1701987132IN
0xeDC0B1...b2982319
0 ETH00.00000001
Report Headers101751012023-12-07 21:13:0022 hrs 52 mins ago1701983580IN
0xeDC0B1...b2982319
0 ETH00.00000001
Report Headers101748922023-12-07 20:12:1223 hrs 53 mins ago1701979932IN
0xeDC0B1...b2982319
0 ETH00.00000095
Report Headers101746782023-12-07 19:12:121 day 53 mins ago1701976332IN
0xeDC0B1...b2982319
0 ETH00.00001051
View all transactions

Latest 25 internal transactions (View All)

Advanced mode:
Parent Txn Hash Block From To Value
101801392023-12-08 19:12:1253 mins ago1702062732
0xeDC0B1...b2982319
0 ETH
101801392023-12-08 19:12:1253 mins ago1702062732
0xeDC0B1...b2982319
0 ETH
101799162023-12-08 18:13:361 hr 52 mins ago1702059216
0xeDC0B1...b2982319
0 ETH
101799162023-12-08 18:13:361 hr 52 mins ago1702059216
0xeDC0B1...b2982319
0 ETH
101796922023-12-08 17:12:122 hrs 53 mins ago1702055532
0xeDC0B1...b2982319
0 ETH
101796922023-12-08 17:12:122 hrs 53 mins ago1702055532
0xeDC0B1...b2982319
0 ETH
101794662023-12-08 16:12:363 hrs 53 mins ago1702051956
0xeDC0B1...b2982319
0 ETH
101794662023-12-08 16:12:363 hrs 53 mins ago1702051956
0xeDC0B1...b2982319
0 ETH
101792442023-12-08 15:12:244 hrs 53 mins ago1702048344
0xeDC0B1...b2982319
0 ETH
101792442023-12-08 15:12:244 hrs 53 mins ago1702048344
0xeDC0B1...b2982319
0 ETH
101790202023-12-08 14:12:245 hrs 53 mins ago1702044744
0xeDC0B1...b2982319
0 ETH
101790202023-12-08 14:12:245 hrs 53 mins ago1702044744
0xeDC0B1...b2982319
0 ETH
101787922023-12-08 13:12:246 hrs 53 mins ago1702041144
0xeDC0B1...b2982319
0 ETH
101787922023-12-08 13:12:246 hrs 53 mins ago1702041144
0xeDC0B1...b2982319
0 ETH
101785562023-12-08 12:12:127 hrs 53 mins ago1702037532
0xeDC0B1...b2982319
0 ETH
101785562023-12-08 12:12:127 hrs 53 mins ago1702037532
0xeDC0B1...b2982319
0 ETH
101783342023-12-08 11:12:128 hrs 53 mins ago1702033932
0xeDC0B1...b2982319
0 ETH
101783342023-12-08 11:12:128 hrs 53 mins ago1702033932
0xeDC0B1...b2982319
0 ETH
101780992023-12-08 10:14:009 hrs 51 mins ago1702030440
0xeDC0B1...b2982319
0 ETH
101780992023-12-08 10:14:009 hrs 51 mins ago1702030440
0xeDC0B1...b2982319
0 ETH
101778562023-12-08 9:12:1210 hrs 53 mins ago1702026732
0xeDC0B1...b2982319
0 ETH
101778562023-12-08 9:12:1210 hrs 53 mins ago1702026732
0xeDC0B1...b2982319
0 ETH
101776172023-12-08 8:12:4811 hrs 52 mins ago1702023168
0xeDC0B1...b2982319
0 ETH
101776172023-12-08 8:12:4811 hrs 52 mins ago1702023168
0xeDC0B1...b2982319
0 ETH
101773942023-12-08 7:12:1212 hrs 53 mins ago1702019532
0xeDC0B1...b2982319
0 ETH
View All Internal Transactions
Loading...
Loading

Contract Source Code Verified (Exact Match)

Contract Name:
AMBHeaderReporter

Compiler Version
v0.8.18+commit.87f61d96

Optimization Enabled:
No with 200 runs

Other Settings:
default evmVersion

Contract Source Code (Solidity Standard Json-Input format)

File 1 of 8 : AMBHeaderReporter.sol
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity ^0.8.17;

import { HeaderStorage } from "../../utils/HeaderStorage.sol";
import { IAMB } from "./IAMB.sol";
import { AMBAdapter } from "./AMBAdapter.sol";

contract AMBHeaderReporter {
    IAMB public immutable amb;
    HeaderStorage public immutable headerStorage;

    event HeaderReported(address indexed emitter, uint256 indexed blockNumber, bytes32 indexed blockHeader);

    constructor(IAMB _amb, HeaderStorage _headerStorage) {
        amb = _amb;
        headerStorage = _headerStorage;
    }

    /// @dev Reports the given block headers to the oracleAdapter via the AMB.
    /// @param blockNumbers Uint256 array of block number to pass over the AMB.
    /// @param ambAdapter Address of the oracle adapter to pass the header to over the AMB.
    /// @param receipt Bytes32 receipt for the transaction.
    function reportHeaders(
        uint256[] memory blockNumbers,
        address ambAdapter,
        uint256 gas
    ) public returns (bytes32 receipt) {
        bytes32[] memory blockHeaders = headerStorage.storeBlockHeaders(blockNumbers);
        bytes memory data = abi.encodeCall(AMBAdapter.storeHashes, (blockNumbers, blockHeaders));
        receipt = amb.requireToPassMessage(ambAdapter, data, gas);
        for (uint256 i = 0; i < blockNumbers.length; i++) {
            emit HeaderReported(address(this), blockNumbers[i], blockHeaders[i]);
        }
    }
}

File 2 of 8 : AMBAdapter.sol
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity ^0.8.17;

import { IAMB } from "./IAMB.sol";
import { OracleAdapter } from "../OracleAdapter.sol";
import { BlockHashOracleAdapter } from "../BlockHashOracleAdapter.sol";

contract AMBAdapter is OracleAdapter, BlockHashOracleAdapter {
    IAMB public amb;
    address public reporter;
    bytes32 public chainId;

    error ArrayLengthMissmatch(address emitter);
    error UnauthorizedAMB(address emitter, address sender);
    error UnauthorizedChainId(address emitter, bytes32 chainId);
    error UnauthorizedHashReporter(address emitter, address reporter);

    constructor(IAMB _amb, address _reporter, bytes32 _chainId) {
        amb = _amb;
        reporter = _reporter;
        chainId = _chainId;
    }

    /// @dev Check that the amb, chainId, and owner are valid.
    modifier onlyValid() {
        if (msg.sender != address(amb)) revert UnauthorizedAMB(address(this), msg.sender);
        if (amb.messageSourceChainId() != chainId) revert UnauthorizedChainId(address(this), chainId);
        if (amb.messageSender() != reporter) revert UnauthorizedHashReporter(address(this), reporter);
        _;
    }

    /// @dev Stores the hashes for a given array of idss.
    /// @param ids Array of ids number for which to set the hashes.
    /// @param _hashes Array of hashes to set for the given ids.
    /// @notice Only callable by `amb` with a message passed from `reporter.
    /// @notice Will revert if given array lengths do not match.
    function storeHashes(uint256[] memory ids, bytes32[] memory _hashes) public onlyValid {
        if (ids.length != _hashes.length) revert ArrayLengthMissmatch(address(this));
        for (uint256 i = 0; i < ids.length; i++) {
            _storeHash(uint256(chainId), ids[i], _hashes[i]);
        }
    }
}

File 3 of 8 : IAMB.sol
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity ^0.8.17;

interface IAMB {
    function messageSender() external view returns (address);

    function messageSourceChainId() external view returns (bytes32);

    function requireToPassMessage(address _contract, bytes memory _data, uint256 _gas) external returns (bytes32);
}

File 4 of 8 : HeaderStorage.sol
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity ^0.8.17;

contract HeaderStorage {
    mapping(uint256 => bytes32) public headers;

    event HeaderStored(uint256 indexed blockNumber, bytes32 indexed blockHeader);

    error HeaderOutOfRange(address emitter, uint256 blockNumber);

    /// @dev Stores and returns the header for the given block.
    /// @param blockNumber Block number.
    /// @return blockHeader Block header stored.
    /// @notice Reverts if the given block header was not previously stored and is now out of range.
    function storeBlockHeader(uint256 blockNumber) public returns (bytes32 blockHeader) {
        blockHeader = headers[blockNumber];
        if (blockHeader == 0) {
            blockHeader = blockhash(blockNumber);
            if (blockHeader == 0) revert HeaderOutOfRange(address(this), blockNumber);
            headers[blockNumber] = blockHeader;
            emit HeaderStored(blockNumber, blockHeader);
        }
    }

    /// @dev Stores and returns the header for an array of given blocks.
    /// @param blockNumbers Array of block numbers.
    /// @return Array of block headers.
    /// @notice Reverts if the given block header was not previously stored and is now out of range.
    function storeBlockHeaders(uint256[] memory blockNumbers) public returns (bytes32[] memory) {
        bytes32[] memory blockHeaders = new bytes32[](blockNumbers.length);
        for (uint256 i = 0; i < blockNumbers.length; i++) {
            blockHeaders[i] = storeBlockHeader(blockNumbers[i]);
        }
        return blockHeaders;
    }
}

File 5 of 8 : BlockHashOracleAdapter.sol
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity ^0.8.17;

import { RLPReader } from "solidity-rlp/contracts/RLPReader.sol";

import { OracleAdapter } from "./OracleAdapter.sol";

abstract contract BlockHashOracleAdapter is OracleAdapter {
    using RLPReader for RLPReader.RLPItem;

    /// @dev Proves and stores valid ancestral block hashes for a given chain ID.
    /// @param chainId The ID of the chain to prove block hashes for.
    /// @param blockHeaders The RLP encoded block headers to prove the hashes for.
    /// @notice Block headers should be ordered by descending block number and should start with a known block header.
    function proveAncestralBlockHashes(uint256 chainId, bytes[] memory blockHeaders) external {
        for (uint256 i = 0; i < blockHeaders.length; i++) {
            RLPReader.RLPItem memory blockHeaderRLP = RLPReader.toRlpItem(blockHeaders[i]);

            if (!blockHeaderRLP.isList()) revert InvalidBlockHeaderRLP();

            RLPReader.RLPItem[] memory blockHeaderContent = blockHeaderRLP.toList();

            // A block header should have between 15 and 17 elements (baseFee and withdrawalsRoot have been added later)
            if (blockHeaderContent.length < 15 || blockHeaderContent.length > 17)
                revert InvalidBlockHeaderLength(blockHeaderContent.length);

            bytes32 blockParent = bytes32(blockHeaderContent[0].toUint());
            uint256 blockNumber = uint256(blockHeaderContent[8].toUint());

            bytes32 reportedBlockHash = keccak256(blockHeaders[i]);
            bytes32 storedBlockHash = hashes[chainId][blockNumber];

            if (reportedBlockHash != storedBlockHash)
                revert ConflictingBlockHeader(blockNumber, reportedBlockHash, storedBlockHash);

            _storeHash(chainId, blockNumber - 1, blockParent);
        }
    }
}

File 6 of 8 : OracleAdapter.sol
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity ^0.8.17;

import { IOracleAdapter } from "../interfaces/IOracleAdapter.sol";

abstract contract OracleAdapter is IOracleAdapter {
    mapping(uint256 => mapping(uint256 => bytes32)) public hashes;

    /// @dev Returns the hash for a given domain and ID, as reported by the oracle.
    /// @param domain Identifier for the domain to query.
    /// @param id Identifier for the ID to query.
    /// @return hash Bytes32 hash reported by the oracle for the given ID on the given domain.
    /// @notice MUST return bytes32(0) if the oracle has not yet reported a hash for the given ID.
    function getHashFromOracle(uint256 domain, uint256 id) external view returns (bytes32 hash) {
        hash = hashes[domain][id];
    }

    /// @dev Stores a hash for a given domain and ID.
    /// @param domain Identifier for the domain.
    /// @param id Identifier for the ID of the hash.
    /// @param hash Bytes32 hash value to store.
    function _storeHash(uint256 domain, uint256 id, bytes32 hash) internal {
        bytes32 currentHash = hashes[domain][id];
        if (currentHash != hash) {
            hashes[domain][id] = hash;
            emit HashStored(id, hash);
        }
    }
}

File 7 of 8 : IOracleAdapter.sol
// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity ^0.8.17;

interface IOracleAdapter {
    event HashStored(uint256 indexed id, bytes32 indexed hashes);

    error InvalidBlockHeaderLength(uint256 length);
    error InvalidBlockHeaderRLP();
    error ConflictingBlockHeader(uint256 blockNumber, bytes32 reportedBlockHash, bytes32 storedBlockHash);

    /// @dev Returns the hash for a given ID, as reported by the oracle.
    /// @param domain Identifier for the domain to query.
    /// @param id Identifier for the ID to query.
    /// @return hash Bytes32 hash reported by the oracle for the given ID on the given domain.
    /// @notice MUST return bytes32(0) if the oracle has not yet reported a hash for the given ID.
    function getHashFromOracle(uint256 domain, uint256 id) external view returns (bytes32 hash);
}

File 8 of 8 : RLPReader.sol
// SPDX-License-Identifier: Apache-2.0

/*
 * @author Hamdi Allam [email protected]
 * Please reach out with any questions or concerns
 */
pragma solidity >=0.5.10 <=0.8.18;

library RLPReader {
    uint8 constant STRING_SHORT_START = 0x80;
    uint8 constant STRING_LONG_START = 0xb8;
    uint8 constant LIST_SHORT_START = 0xc0;
    uint8 constant LIST_LONG_START = 0xf8;
    uint8 constant WORD_SIZE = 32;

    struct RLPItem {
        uint256 len;
        uint256 memPtr;
    }

    struct Iterator {
        RLPItem item; // Item that's being iterated over.
        uint256 nextPtr; // Position of the next item in the list.
    }

    /*
     * @dev Returns the next element in the iteration. Reverts if it has not next element.
     * @param self The iterator.
     * @return The next element in the iteration.
     */
    function next(Iterator memory self) internal pure returns (RLPItem memory) {
        require(hasNext(self));

        uint256 ptr = self.nextPtr;
        uint256 itemLength = _itemLength(ptr);
        self.nextPtr = ptr + itemLength;

        return RLPItem(itemLength, ptr);
    }

    /*
     * @dev Returns true if the iteration has more elements.
     * @param self The iterator.
     * @return true if the iteration has more elements.
     */
    function hasNext(Iterator memory self) internal pure returns (bool) {
        RLPItem memory item = self.item;
        return self.nextPtr < item.memPtr + item.len;
    }

    /*
     * @param item RLP encoded bytes
     */
    function toRlpItem(bytes memory item) internal pure returns (RLPItem memory) {
        uint256 memPtr;
        assembly {
            memPtr := add(item, 0x20)
        }

        return RLPItem(item.length, memPtr);
    }

    /*
     * @dev Create an iterator. Reverts if item is not a list.
     * @param self The RLP item.
     * @return An 'Iterator' over the item.
     */
    function iterator(RLPItem memory self) internal pure returns (Iterator memory) {
        require(isList(self));

        uint256 ptr = self.memPtr + _payloadOffset(self.memPtr);
        return Iterator(self, ptr);
    }

    /*
     * @param the RLP item.
     */
    function rlpLen(RLPItem memory item) internal pure returns (uint256) {
        return item.len;
    }

    /*
     * @param the RLP item.
     * @return (memPtr, len) pair: location of the item's payload in memory.
     */
    function payloadLocation(RLPItem memory item) internal pure returns (uint256, uint256) {
        uint256 offset = _payloadOffset(item.memPtr);
        uint256 memPtr = item.memPtr + offset;
        uint256 len = item.len - offset; // data length
        return (memPtr, len);
    }

    /*
     * @param the RLP item.
     */
    function payloadLen(RLPItem memory item) internal pure returns (uint256) {
        (, uint256 len) = payloadLocation(item);
        return len;
    }

    /*
     * @param the RLP item containing the encoded list.
     */
    function toList(RLPItem memory item) internal pure returns (RLPItem[] memory) {
        require(isList(item));

        uint256 items = numItems(item);
        RLPItem[] memory result = new RLPItem[](items);

        uint256 memPtr = item.memPtr + _payloadOffset(item.memPtr);
        uint256 dataLen;
        for (uint256 i = 0; i < items; i++) {
            dataLen = _itemLength(memPtr);
            result[i] = RLPItem(dataLen, memPtr);
            memPtr = memPtr + dataLen;
        }

        return result;
    }

    // @return indicator whether encoded payload is a list. negate this function call for isData.
    function isList(RLPItem memory item) internal pure returns (bool) {
        if (item.len == 0) return false;

        uint8 byte0;
        uint256 memPtr = item.memPtr;
        assembly {
            byte0 := byte(0, mload(memPtr))
        }

        if (byte0 < LIST_SHORT_START) return false;
        return true;
    }

    /*
     * @dev A cheaper version of keccak256(toRlpBytes(item)) that avoids copying memory.
     * @return keccak256 hash of RLP encoded bytes.
     */
    function rlpBytesKeccak256(RLPItem memory item) internal pure returns (bytes32) {
        uint256 ptr = item.memPtr;
        uint256 len = item.len;
        bytes32 result;
        assembly {
            result := keccak256(ptr, len)
        }
        return result;
    }

    /*
     * @dev A cheaper version of keccak256(toBytes(item)) that avoids copying memory.
     * @return keccak256 hash of the item payload.
     */
    function payloadKeccak256(RLPItem memory item) internal pure returns (bytes32) {
        (uint256 memPtr, uint256 len) = payloadLocation(item);
        bytes32 result;
        assembly {
            result := keccak256(memPtr, len)
        }
        return result;
    }

    /** RLPItem conversions into data types **/

    // @returns raw rlp encoding in bytes
    function toRlpBytes(RLPItem memory item) internal pure returns (bytes memory) {
        bytes memory result = new bytes(item.len);
        if (result.length == 0) return result;

        uint256 ptr;
        assembly {
            ptr := add(0x20, result)
        }

        copy(item.memPtr, ptr, item.len);
        return result;
    }

    // any non-zero byte except "0x80" is considered true
    function toBoolean(RLPItem memory item) internal pure returns (bool) {
        require(item.len == 1);
        uint256 result;
        uint256 memPtr = item.memPtr;
        assembly {
            result := byte(0, mload(memPtr))
        }

        // SEE Github Issue #5.
        // Summary: Most commonly used RLP libraries (i.e Geth) will encode
        // "0" as "0x80" instead of as "0". We handle this edge case explicitly
        // here.
        if (result == 0 || result == STRING_SHORT_START) {
            return false;
        } else {
            return true;
        }
    }

    function toAddress(RLPItem memory item) internal pure returns (address) {
        // 1 byte for the length prefix
        require(item.len == 21);

        return address(uint160(toUint(item)));
    }

    function toUint(RLPItem memory item) internal pure returns (uint256) {
        require(item.len > 0 && item.len <= 33);

        (uint256 memPtr, uint256 len) = payloadLocation(item);

        uint256 result;
        assembly {
            result := mload(memPtr)

            // shift to the correct location if neccesary
            if lt(len, 32) {
                result := div(result, exp(256, sub(32, len)))
            }
        }

        return result;
    }

    // enforces 32 byte length
    function toUintStrict(RLPItem memory item) internal pure returns (uint256) {
        // one byte prefix
        require(item.len == 33);

        uint256 result;
        uint256 memPtr = item.memPtr + 1;
        assembly {
            result := mload(memPtr)
        }

        return result;
    }

    function toBytes(RLPItem memory item) internal pure returns (bytes memory) {
        require(item.len > 0);

        (uint256 memPtr, uint256 len) = payloadLocation(item);
        bytes memory result = new bytes(len);

        uint256 destPtr;
        assembly {
            destPtr := add(0x20, result)
        }

        copy(memPtr, destPtr, len);
        return result;
    }

    /*
     * Private Helpers
     */

    // @return number of payload items inside an encoded list.
    function numItems(RLPItem memory item) private pure returns (uint256) {
        if (item.len == 0) return 0;

        uint256 count = 0;
        uint256 currPtr = item.memPtr + _payloadOffset(item.memPtr);
        uint256 endPtr = item.memPtr + item.len;
        while (currPtr < endPtr) {
            currPtr = currPtr + _itemLength(currPtr); // skip over an item
            count++;
        }

        return count;
    }

    // @return entire rlp item byte length
    function _itemLength(uint256 memPtr) private pure returns (uint256) {
        uint256 itemLen;
        uint256 byte0;
        assembly {
            byte0 := byte(0, mload(memPtr))
        }

        if (byte0 < STRING_SHORT_START) {
            itemLen = 1;
        } else if (byte0 < STRING_LONG_START) {
            itemLen = byte0 - STRING_SHORT_START + 1;
        } else if (byte0 < LIST_SHORT_START) {
            assembly {
                let byteLen := sub(byte0, 0xb7) // # of bytes the actual length is
                memPtr := add(memPtr, 1) // skip over the first byte

                /* 32 byte word size */
                let dataLen := div(mload(memPtr), exp(256, sub(32, byteLen))) // right shifting to get the len
                itemLen := add(dataLen, add(byteLen, 1))
            }
        } else if (byte0 < LIST_LONG_START) {
            itemLen = byte0 - LIST_SHORT_START + 1;
        } else {
            assembly {
                let byteLen := sub(byte0, 0xf7)
                memPtr := add(memPtr, 1)

                let dataLen := div(mload(memPtr), exp(256, sub(32, byteLen))) // right shifting to the correct length
                itemLen := add(dataLen, add(byteLen, 1))
            }
        }

        return itemLen;
    }

    // @return number of bytes until the data
    function _payloadOffset(uint256 memPtr) private pure returns (uint256) {
        uint256 byte0;
        assembly {
            byte0 := byte(0, mload(memPtr))
        }

        if (byte0 < STRING_SHORT_START) {
            return 0;
        } else if (byte0 < STRING_LONG_START || (byte0 >= LIST_SHORT_START && byte0 < LIST_LONG_START)) {
            return 1;
        } else if (byte0 < LIST_SHORT_START) {
            // being explicit
            return byte0 - (STRING_LONG_START - 1) + 1;
        } else {
            return byte0 - (LIST_LONG_START - 1) + 1;
        }
    }

    /*
     * @param src Pointer to source
     * @param dest Pointer to destination
     * @param len Amount of memory to copy from the source
     */
    function copy(uint256 src, uint256 dest, uint256 len) private pure {
        if (len == 0) return;

        // copy as many word sizes as possible
        for (; len >= WORD_SIZE; len -= WORD_SIZE) {
            assembly {
                mstore(dest, mload(src))
            }

            src += WORD_SIZE;
            dest += WORD_SIZE;
        }

        if (len > 0) {
            // left over bytes. Mask is used to remove unwanted bytes from the word
            uint256 mask = 256**(WORD_SIZE - len) - 1;
            assembly {
                let srcpart := and(mload(src), not(mask)) // zero out src
                let destpart := and(mload(dest), mask) // retrieve the bytes
                mstore(dest, or(destpart, srcpart))
            }
        }
    }
}

Settings
{
  "optimizer": {
    "enabled": false,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  }
}

Contract ABI

[{"inputs":[{"internalType":"contract IAMB","name":"_amb","type":"address"},{"internalType":"contract HeaderStorage","name":"_headerStorage","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"emitter","type":"address"},{"indexed":true,"internalType":"uint256","name":"blockNumber","type":"uint256"},{"indexed":true,"internalType":"bytes32","name":"blockHeader","type":"bytes32"}],"name":"HeaderReported","type":"event"},{"inputs":[],"name":"amb","outputs":[{"internalType":"contract IAMB","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"headerStorage","outputs":[{"internalType":"contract HeaderStorage","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256[]","name":"blockNumbers","type":"uint256[]"},{"internalType":"address","name":"ambAdapter","type":"address"},{"internalType":"uint256","name":"gas","type":"uint256"}],"name":"reportHeaders","outputs":[{"internalType":"bytes32","name":"receipt","type":"bytes32"}],"stateMutability":"nonpayable","type":"function"}]

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

Deployed Bytecode

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

Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

00000000000000000000000001268db05965ceac2a89566c42cd550ed7ee5ecd0000000000000000000000004cd014ac64aaa899b46bf3a477b68bb67e33edc4

-----Decoded View---------------
Arg [0] : _amb (address): 0x01268DB05965CeAc2a89566c42CD550ED7eE5ECD
Arg [1] : _headerStorage (address): 0x4cD014AC64AAa899b46BF3a477B68bb67e33eDC4

-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 00000000000000000000000001268db05965ceac2a89566c42cd550ed7ee5ecd
Arg [1] : 0000000000000000000000004cd014ac64aaa899b46bf3a477b68bb67e33edc4


Block Transaction Difficulty Gas Used Reward
View All Blocks Produced

Block Uncle Number Difficulty Gas Used Reward
View All Uncles
Loading...
Loading

Validator Index Block Amount
View All Withdrawals

Txn Hash Block Value Eth2 PubKey Valid
View All Deposits
[ Download: CSV Export  ]
[ Download: CSV Export  ]

A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.