TaikoL2
VerifiedBlock
struct VerifiedBlock {
bytes32 blockHash;
bytes32 signalRoot;
}EIP1559Params
struct EIP1559Params {
uint64 basefee;
uint64 gasIssuedPerSecond;
uint64 gasExcessMax;
uint64 gasTarget;
uint64 ratio2x1x;
}EIP1559Config
struct EIP1559Config {
uint128 yscale;
uint64 xscale;
uint64 gasIssuedPerSecond;
}publicInputHash
bytes32 publicInputHashparentTimestamp
uint64 parentTimestamplatestSyncedL1Height
uint64 latestSyncedL1HeightgasExcess
uint64 gasExcessAnchored
event Anchored(uint64 number, uint64 basefee, uint64 gaslimit, uint64 timestamp, bytes32 parentHash, uint256 prevrandao, address coinbase, uint32 chainid)L2_BASEFEE_MISMATCH
error L2_BASEFEE_MISMATCH(uint64 expected, uint64 actual)L2_INVALID_1559_PARAMS
error L2_INVALID_1559_PARAMS()L2_INVALID_CHAIN_ID
error L2_INVALID_CHAIN_ID()L2_INVALID_SENDER
error L2_INVALID_SENDER()L2_PUBLIC_INPUT_HASH_MISMATCH
error L2_PUBLIC_INPUT_HASH_MISMATCH(bytes32 expected, bytes32 actual)L2_TOO_LATE
error L2_TOO_LATE()M1559_UNEXPECTED_CHANGE
error M1559_UNEXPECTED_CHANGE(uint64 expected, uint64 actual)M1559_OUT_OF_STOCK
error M1559_OUT_OF_STOCK()init
function init(address _addressManager, struct TaikoL2.EIP1559Params _param1559) externalanchor
function anchor(bytes32 l1Hash, bytes32 l1SignalRoot, uint64 l1Height, uint64 parentGasUsed) externalPersist the latest L1 block height and hash to L2 for cross-layer message verification (eg. bridging). This function will also check certain block-level global variables because they are not part of the Trie structure.
A circuit will verify the integrity among:
- l1Hash, l1SignalRoot, and l1SignalServiceAddress
- (l1Hash and l1SignalServiceAddress) are both hashed into of the ZKP's instance.
This transaction shall be the first transaction in every L2 block.
Parameters
| Name | Type | Description |
|---|---|---|
| l1Hash | bytes32 | The latest L1 block hash when this block was proposed. |
| l1SignalRoot | bytes32 | The latest value of the L1 "signal service storage root". |
| l1Height | uint64 | The latest L1 block height when this block was proposed. |
| parentGasUsed | uint64 | the gas used in the parent block. |
getBasefee
function getBasefee(uint32 timeSinceParent, uint64 gasLimit, uint64 parentGasUsed) public view returns (uint256 _basefee)getCrossChainBlockHash
function getCrossChainBlockHash(uint256 number) public view returns (bytes32)Returns the cross-chain block hash at the given block number.
Parameters
| Name | Type | Description |
|---|---|---|
| number | uint256 | The block number. Use 0 for the latest block. |
Return Values
| Name | Type | Description |
|---|---|---|
| [0] | bytes32 | The cross-chain block hash. |
getCrossChainSignalRoot
function getCrossChainSignalRoot(uint256 number) public view returns (bytes32)Returns the cross-chain signal service storage root at the given block number.
Parameters
| Name | Type | Description |
|---|---|---|
| number | uint256 | The block number. Use 0 for the latest block. |
Return Values
| Name | Type | Description |
|---|---|---|
| [0] | bytes32 | The cross-chain signal service storage root. |
getBlockHash
function getBlockHash(uint256 number) public view returns (bytes32)getEIP1559Config
function getEIP1559Config() public view virtual returns (struct TaikoL2.EIP1559Config)Overide this funciton to return a constant EIP1559Config object