false
false
0
The new Blockscout UI is now open source! Learn how to deploy it here

Contract Address Details

0x0167000000000000000000000000000000010001

Contract Name
TaikoL2
Creator
Balance
0 ETH
Tokens
Fetching tokens...
Transactions
0 Transactions
Transfers
0 Transfers
Gas Used
0
Last Balance Update
611248
Warning! Contract bytecode has been changed and doesn't match the verified one. Therefore, interaction with this smart contract may be risky.
Contract name:
TaikoL2




Optimization enabled
true
Compiler version
v0.8.24+commit.e11b9ed9




Optimization runs
200
EVM Version
cancun




Verified at
2024-05-26T02:14:00.202253Z

contracts/L2/TaikoL2.sol

// SPDX-License-Identifier: MIT
pragma solidity 0.8.24;
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "../common/EssentialContract.sol";
import "../common/LibStrings.sol";
import "../libs/LibAddress.sol";
import "../signal/ISignalService.sol";
import "./Lib1559Math.sol";
import "./LibL2Config.sol";
/// @title TaikoL2
/// @notice Taiko L2 is a smart contract that handles cross-layer message
/// verification and manages EIP-1559 gas pricing for Layer 2 (L2) operations.
/// It is used to anchor the latest L1 block details to L2 for cross-layer
/// communication, manage EIP-1559 parameters for gas pricing, and store
/// verified L1 block information.
/// @custom:security-contact security@taiko.xyz
contract TaikoL2 is EssentialContract {
using LibAddress for address;
using SafeERC20 for IERC20;
/// @notice Golden touch address is the only address that can do the anchor transaction.
address public constant GOLDEN_TOUCH_ADDRESS = 0x0000777735367b36bC9B61C50022d9D0700dB4Ec;
/// @notice Mapping from L2 block numbers to their block hashes. All L2 block hashes will
/// be saved in this mapping.
mapping(uint256 blockId => bytes32 blockHash) public l2Hashes;
/// @notice A hash to check the integrity of public inputs.
/// @dev Slot 2.
bytes32 public publicInputHash;
/// @notice The gas excess value used to calculate the base fee.
/// @dev Slot 3.
uint64 public gasExcess;
/// @notice The last synced L1 block height.
uint64 public lastSyncedBlock;
 
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contracts/L2/Lib1559Math.sol

// SPDX-License-Identifier: MIT
pragma solidity 0.8.24;
import "../thirdparty/solmate/LibFixedPointMath.sol";
import "../libs/LibMath.sol";
/// @title Lib1559Math
/// @notice Implements e^(x) based bonding curve for EIP-1559
/// @dev See https://ethresear.ch/t/make-eip-1559-more-like-an-amm-curve/9082 but some minor
/// difference as stated in docs/eip1559_on_l2.md.
/// @custom:security-contact security@taiko.xyz
library Lib1559Math {
using LibMath for uint256;
error EIP1559_INVALID_PARAMS();
function calc1559BaseFee(
uint32 _gasTargetPerL1Block,
uint8 _adjustmentQuotient,
uint64 _gasExcess,
uint64 _gasIssuance,
uint32 _parentGasUsed
)
internal
pure
returns (uint256 basefee_, uint64 gasExcess_)
{
// We always add the gas used by parent block to the gas excess
// value as this has already happened
uint256 excess = uint256(_gasExcess) + _parentGasUsed;
excess = excess > _gasIssuance ? excess - _gasIssuance : 1;
gasExcess_ = uint64(excess.min(type(uint64).max));
// The base fee per gas used by this block is the spot price at the
// bonding curve, regardless the actual amount of gas used by this
// block, however, this block's gas used will affect the next
// block's base fee.
basefee_ = basefee(gasExcess_, uint256(_adjustmentQuotient) * _gasTargetPerL1Block);
// Always make sure basefee is nonzero, this is required by the node.
if (basefee_ == 0) basefee_ = 1;
 
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contracts/L2/LibL2Config.sol

// SPDX-License-Identifier: MIT
pragma solidity 0.8.24;
/// @title LibL2Config
library LibL2Config {
struct Config {
uint32 gasTargetPerL1Block;
uint8 basefeeAdjustmentQuotient;
}
/// @notice Returns EIP1559 related configurations.
/// @return config_ struct containing configuration parameters.
function get() internal pure returns (Config memory config_) {
// Assuming we sell 3x more blockspace than Ethereum: 15_000_000 * 4
// Note that Brecht's concern is that this value may be too large.
// We need to monitor L2 state growth and lower this value when necessary.
config_.gasTargetPerL1Block = 60_000_000;
config_.basefeeAdjustmentQuotient = 8;
}
}
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contracts/common/AddressResolver.sol

// SPDX-License-Identifier: MIT
pragma solidity 0.8.24;
import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol";
import "./IAddressManager.sol";
import "./IAddressResolver.sol";
/// @title AddressResolver
/// @notice See the documentation in {IAddressResolver}.
/// @custom:security-contact security@taiko.xyz
abstract contract AddressResolver is IAddressResolver, Initializable {
/// @notice Address of the AddressManager.
address public addressManager;
uint256[49] private __gap;
error RESOLVER_DENIED();
error RESOLVER_INVALID_MANAGER();
error RESOLVER_UNEXPECTED_CHAINID();
error RESOLVER_ZERO_ADDR(uint64 chainId, bytes32 name);
/// @dev Modifier that ensures the caller is the resolved address of a given
/// name.
/// @param _name The name to check against.
modifier onlyFromNamed(bytes32 _name) {
if (msg.sender != resolve(_name, true)) revert RESOLVER_DENIED();
_;
}
/// @dev Modifier that ensures the caller is a resolved address to either _name1 or _name2
/// name.
/// @param _name1 The first name to check against.
/// @param _name2 The second name to check against.
modifier onlyFromNamedEither(bytes32 _name1, bytes32 _name2) {
if (msg.sender != resolve(_name1, true) && msg.sender != resolve(_name2, true)) {
revert RESOLVER_DENIED();
}
_;
}
/// @custom:oz-upgrades-unsafe-allow constructor
constructor() {
 
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contracts/common/EssentialContract.sol

// SPDX-License-Identifier: MIT
pragma solidity 0.8.24;
import "@openzeppelin/contracts/proxy/utils/UUPSUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/access/Ownable2StepUpgradeable.sol";
import "./AddressResolver.sol";
import "../libs/LibNetwork.sol";
/// @title EssentialContract
/// @custom:security-contact security@taiko.xyz
abstract contract EssentialContract is UUPSUpgradeable, Ownable2StepUpgradeable, AddressResolver {
uint8 private constant _FALSE = 1;
uint8 private constant _TRUE = 2;
/// @dev The slot in transient storage of the reentry lock.
/// This is the result of keccak256("ownerUUPS.reentry_slot") plus 1. The addition aims to
/// prevent hash collisions with slots defined in EIP-1967, where slots are derived by
/// keccak256("something") - 1, and with slots in SignalService, calculated directly with
/// keccak256("something").
bytes32 private constant _REENTRY_SLOT =
0xa5054f728453d3dbe953bdc43e4d0cb97e662ea32d7958190f3dc2da31d9721b;
/// @dev Slot 1.
uint8 private __reentry;
uint8 private __paused;
uint64 public lastUnpausedAt;
uint256[49] private __gap;
/// @notice Emitted when the contract is paused.
/// @param account The account that paused the contract.
event Paused(address account);
/// @notice Emitted when the contract is unpaused.
/// @param account The account that unpaused the contract.
event Unpaused(address account);
error INVALID_PAUSE_STATUS();
error FUNC_NOT_IMPLEMENTED();
error REENTRANT_CALL();
 
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contracts/common/IAddressManager.sol

// SPDX-License-Identifier: MIT
pragma solidity 0.8.24;
/// @title IAddressManager
/// @notice Manages a mapping of (chainId, name) pairs to Ethereum addresses.
/// @custom:security-contact security@taiko.xyz
interface IAddressManager {
/// @notice Gets the address mapped to a specific chainId-name pair.
/// @dev Note that in production, this method shall be a pure function
/// without any storage access.
/// @param _chainId The chainId for which the address needs to be fetched.
/// @param _name The name for which the address needs to be fetched.
/// @return Address associated with the chainId-name pair.
function getAddress(uint64 _chainId, bytes32 _name) external view returns (address);
}
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contracts/common/IAddressResolver.sol

// SPDX-License-Identifier: MIT
pragma solidity 0.8.24;
/// @title IAddressResolver
/// @notice This contract acts as a bridge for name-to-address resolution.
/// It delegates the resolution to the AddressManager. By separating the logic,
/// we can maintain flexibility in address management without affecting the
/// resolving process.
/// @dev Note that the address manager should be changed using upgradability, there
/// is no setAddressManager() function to guarantee atomicity across all
/// contracts that are resolvers.
/// @custom:security-contact security@taiko.xyz
interface IAddressResolver {
/// @notice Resolves a name to its address deployed on this chain.
/// @param _name Name whose address is to be resolved.
/// @param _allowZeroAddress If set to true, does not throw if the resolved
/// address is `address(0)`.
/// @return Address associated with the given name.
function resolve(
bytes32 _name,
bool _allowZeroAddress
)
external
view
returns (address payable);
/// @notice Resolves a name to its address deployed on a specified chain.
/// @param _chainId The chainId of interest.
/// @param _name Name whose address is to be resolved.
/// @param _allowZeroAddress If set to true, does not throw if the resolved
/// address is `address(0)`.
/// @return Address associated with the given name on the specified
/// chain.
function resolve(
uint64 _chainId,
bytes32 _name,
bool _allowZeroAddress
)
external
view
returns (address payable);
 
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contracts/common/LibStrings.sol

// SPDX-License-Identifier: MIT
pragma solidity 0.8.24;
/// @title LibStrings
/// @custom:security-contact security@taiko.xyz
library LibStrings {
bytes32 internal constant B_ASSIGNMENT_HOOK = bytes32("assignment_hook");
bytes32 internal constant B_AUTOMATA_DCAP_ATTESTATION = bytes32("automata_dcap_attestation");
bytes32 internal constant B_BRIDGE = bytes32("bridge");
bytes32 internal constant B_BRIDGE_WATCHDOG = bytes32("bridge_watchdog");
bytes32 internal constant B_BRIDGED_ERC1155 = bytes32("bridged_erc1155");
bytes32 internal constant B_BRIDGED_ERC20 = bytes32("bridged_erc20");
bytes32 internal constant B_BRIDGED_ERC721 = bytes32("bridged_erc721");
bytes32 internal constant B_CHAIN_WATCHDOG = bytes32("chain_watchdog");
bytes32 internal constant B_ERC1155_VAULT = bytes32("erc1155_vault");
bytes32 internal constant B_ERC20_VAULT = bytes32("erc20_vault");
bytes32 internal constant B_ERC721_VAULT = bytes32("erc721_vault");
bytes32 internal constant B_PROPOSER = bytes32("proposer");
bytes32 internal constant B_PROPOSER_ONE = bytes32("proposer_one");
bytes32 internal constant B_PROVER_ASSIGNMENT = bytes32("PROVER_ASSIGNMENT");
bytes32 internal constant B_PROVER_SET = bytes32("prover_set");
bytes32 internal constant B_QUOTA_MANAGER = bytes32("quota_manager");
bytes32 internal constant B_SGX_WATCHDOG = bytes32("sgx_watchdog");
bytes32 internal constant B_SIGNAL_SERVICE = bytes32("signal_service");
bytes32 internal constant B_TAIKO = bytes32("taiko");
bytes32 internal constant B_TAIKO_TOKEN = bytes32("taiko_token");
bytes32 internal constant B_TIER_GUARDIAN = bytes32("tier_guardian");
bytes32 internal constant B_TIER_GUARDIAN_MINORITY = bytes32("tier_guardian_minority");
bytes32 internal constant B_TIER_PROVIDER = bytes32("tier_provider");
bytes32 internal constant B_TIER_SGX = bytes32("tier_sgx");
bytes32 internal constant B_TIER_SGX_ZKVM = bytes32("tier_sgx_zkvm");
bytes32 internal constant B_WITHDRAWER = bytes32("withdrawer");
bytes32 internal constant H_RETURN_LIVENESS_BOND = keccak256("RETURN_LIVENESS_BOND");
bytes32 internal constant H_SIGNAL_ROOT = keccak256("SIGNAL_ROOT");
bytes32 internal constant H_STATE_ROOT = keccak256("STATE_ROOT");
}
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contracts/libs/LibAddress.sol

// SPDX-License-Identifier: MIT
pragma solidity 0.8.24;
import "@openzeppelin/contracts/utils/Address.sol";
import "@openzeppelin/contracts/utils/introspection/IERC165.sol";
import "@openzeppelin/contracts/interfaces/IERC1271.sol";
/// @title LibAddress
/// @dev Provides utilities for address-related operations.
/// @custom:security-contact security@taiko.xyz
library LibAddress {
error ETH_TRANSFER_FAILED();
/// @dev Sends Ether to the specified address. This method will not revert even if sending ether
/// fails.
/// This function is inspired by
/// https://github.com/nomad-xyz/ExcessivelySafeCall/blob/main/src/ExcessivelySafeCall.sol
/// @param _to The recipient address.
/// @param _amount The amount of Ether to send in wei.
/// @param _gasLimit The max amount gas to pay for this transaction.
/// @return success_ true if the call is successful, false otherwise.
function sendEther(
address _to,
uint256 _amount,
uint256 _gasLimit,
bytes memory _calldata
)
internal
returns (bool success_)
{
// Check for zero-address transactions
if (_to == address(0)) revert ETH_TRANSFER_FAILED();
// dispatch message to recipient
// by assembly calling "handle" function
// we call via assembly to avoid memcopying a very large returndata
// returned by a malicious contract
assembly {
success_ :=
call(
_gasLimit, // gas
_to, // recipient
 
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contracts/libs/LibMath.sol

// SPDX-License-Identifier: MIT
pragma solidity 0.8.24;
/// @title LibMath
/// @dev This library offers additional math functions for uint256.
/// @custom:security-contact security@taiko.xyz
library LibMath {
/// @dev Returns the smaller of the two given values.
/// @param _a The first number to compare.
/// @param _b The second number to compare.
/// @return The smaller of the two numbers.
function min(uint256 _a, uint256 _b) internal pure returns (uint256) {
return _a > _b ? _b : _a;
}
/// @dev Returns the larger of the two given values.
/// @param _a The first number to compare.
/// @param _b The second number to compare.
/// @return The larger of the two numbers.
function max(uint256 _a, uint256 _b) internal pure returns (uint256) {
return _a > _b ? _a : _b;
}
}
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contracts/libs/LibNetwork.sol

// SPDX-License-Identifier: MIT
pragma solidity 0.8.24;
/// @title LibNetwork
library LibNetwork {
uint256 internal constant MAINNET = 1;
uint256 internal constant ROPSTEN = 2;
uint256 internal constant RINKEBY = 4;
uint256 internal constant GOERLI = 5;
uint256 internal constant KOVAN = 42;
uint256 internal constant HOLESKY = 17_000;
uint256 internal constant SEPOLIA = 11_155_111;
uint64 internal constant TAIKO = 167_000;
/// @dev Checks if the chain ID represents an Ethereum testnet.
/// @param _chainId The chain ID.
/// @return true if the chain ID represents an Ethereum testnet, false otherwise.
function isEthereumTestnet(uint256 _chainId) internal pure returns (bool) {
return _chainId == LibNetwork.ROPSTEN || _chainId == LibNetwork.RINKEBY
|| _chainId == LibNetwork.GOERLI || _chainId == LibNetwork.KOVAN
|| _chainId == LibNetwork.HOLESKY || _chainId == LibNetwork.SEPOLIA;
}
/// @dev Checks if the chain ID represents an Ethereum testnet or the Etheruem mainnet.
/// @param _chainId The chain ID.
/// @return true if the chain ID represents an Ethereum testnet or the Etheruem mainnet, false
/// otherwise.
function isEthereumMainnetOrTestnet(uint256 _chainId) internal pure returns (bool) {
return _chainId == LibNetwork.MAINNET || isEthereumTestnet(_chainId);
}
/// @dev Checks if the chain ID represents the Taiko L2 mainnet.
/// @param _chainId The chain ID.
/// @return true if the chain ID represents the Taiko L2 mainnet.
function isTaikoMainnet(uint256 _chainId) internal pure returns (bool) {
return _chainId == TAIKO;
}
/// @dev Checks if the chain ID represents an internal Taiko devnet's base layer.
/// @param _chainId The chain ID.
 
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contracts/signal/ISignalService.sol

// SPDX-License-Identifier: MIT
pragma solidity 0.8.24;
/// @title ISignalService
/// @notice The SignalService contract serves as a secure cross-chain message
/// passing system. It defines methods for sending and verifying signals with
/// merkle proofs. The trust assumption is that the target chain has secure
/// access to the merkle root (such as Taiko injects it in the anchor
/// transaction). With this, verifying a signal is reduced to simply verifying
/// a merkle proof.
/// @custom:security-contact security@taiko.xyz
interface ISignalService {
enum CacheOption {
CACHE_NOTHING,
CACHE_SIGNAL_ROOT,
CACHE_STATE_ROOT,
CACHE_BOTH
}
struct HopProof {
/// @notice This hop's destination chain ID. If there is a next hop, this ID is the next
/// hop's source chain ID.
uint64 chainId;
/// @notice The ID of a source chain block whose state root has been synced to the hop's
/// destination chain.
/// Note that this block ID must be greater than or equal to the block ID where the signal
/// was sent on the source chain.
uint64 blockId;
/// @notice The state root or signal root of the source chain at the above blockId. This
/// value has been synced to the destination chain.
/// @dev To get both the blockId and the rootHash, apps should subscribe to the
/// ChainDataSynced event or query `topBlockId` first using the source chain's ID and
/// LibStrings.H_STATE_ROOT to get the most recent block ID synced, then call
/// `getSyncedChainData` to read the synchronized data.
bytes32 rootHash;
/// @notice Options to cache either the state roots or signal roots of middle-hops to the
/// current chain.
CacheOption cacheOption;
/// @notice The signal service's account proof. If this value is empty, then `rootHash` will
/// be used as the signal root, otherwise, `rootHash` will be used as the state root.
bytes[] accountProof;
 
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contracts/thirdparty/solmate/LibFixedPointMath.sol

// SPDX-License-Identifier: MIT
// Taken from the contract below, expWad() function tailored to Taiko's need
// https://github.com/transmissions11/solmate/blob/v7/src/utils/FixedPointMathLib.sol
pragma solidity 0.8.24;
library LibFixedPointMath {
uint128 public constant MAX_EXP_INPUT = 135_305_999_368_893_231_588;
uint256 public constant SCALING_FACTOR = 1e18; // For fixed point representation factor
error Overflow();
// Computes e^x in 1e18 fixed point.
function exp(int256 x) internal pure returns (int256 r) {
unchecked {
// Input x is in fixed point format, with scale factor 1/1e18.
// When the result is < 0.5 we return zero. This happens when
// x <= floor(log(0.5e18) * 1e18) ~ -42e18
if (x <= -42_139_678_854_452_767_551) {
return 0;
}
// When the result is > (2**255 - 1) / 1e18 we can not represent it
// as an int256. This happens when x >= floor(log((2**255 -1) /
// 1e18) * 1e18) ~ 135.
if (x >= 135_305_999_368_893_231_589) revert Overflow();
// x is now in the range (-42, 136) * 1e18. Convert to (-42, 136) *
// 2**96
// for more intermediate precision and a binary basis. This base
// conversion
// is a multiplication by 1e18 / 2**96 = 5**18 / 2**78.
x = (x << 78) / 5 ** 18;
// Reduce range of x to (-½ ln 2, ½ ln 2) * 2**96 by factoring out
// powers of two
// such that exp(x) = exp(x') * 2**k, where k is an integer.
// Solving this gives k = round(x / log(2)) and x' = x - k * log(2).
int256 k = ((x << 96) / 54_916_777_467_707_473_351_141_471_128 + 2 ** 95) >> 96;
x = x - k * 54_916_777_467_707_473_351_141_471_128;
// k is in the range [-61, 195].
 
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node_modules/@openzeppelin/contracts-upgradeable/access/Ownable2StepUpgradeable.sol

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable2Step.sol)
pragma solidity ^0.8.0;
import "./OwnableUpgradeable.sol";
import {Initializable} from "../proxy/utils/Initializable.sol";
/**
* @dev Contract module which provides access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership} and {acceptOwnership}.
*
* This module is used through inheritance. It will make available all functions
* from parent (Ownable).
*/
abstract contract Ownable2StepUpgradeable is Initializable, OwnableUpgradeable {
address private _pendingOwner;
event OwnershipTransferStarted(address indexed previousOwner, address indexed newOwner);
function __Ownable2Step_init() internal onlyInitializing {
__Ownable_init_unchained();
}
function __Ownable2Step_init_unchained() internal onlyInitializing {
}
/**
* @dev Returns the address of the pending owner.
*/
function pendingOwner() public view virtual returns (address) {
return _pendingOwner;
}
/**
* @dev Starts the ownership transfer of the contract to a new account. Replaces the pending transfer if there is one.
* Can only be called by the current owner.
*/
 
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node_modules/@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol)
pragma solidity ^0.8.0;
import "../utils/ContextUpgradeable.sol";
import {Initializable} from "../proxy/utils/Initializable.sol";
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract OwnableUpgradeable is Initializable, ContextUpgradeable {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
function __Ownable_init() internal onlyInitializing {
__Ownable_init_unchained();
}
function __Ownable_init_unchained() internal onlyInitializing {
_transferOwnership(_msgSender());
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
_checkOwner();
 
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node_modules/@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (proxy/utils/Initializable.sol)
pragma solidity ^0.8.2;
import "../../utils/AddressUpgradeable.sol";
/**
* @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
* behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an
* external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
* function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
*
* The initialization functions use a version number. Once a version number is used, it is consumed and cannot be
* reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in
* case an upgrade adds a module that needs to be initialized.
*
* For example:
*
* [.hljs-theme-light.nopadding]
* ```solidity
* contract MyToken is ERC20Upgradeable {
* function initialize() initializer public {
* __ERC20_init("MyToken", "MTK");
* }
* }
*
* contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {
* function initializeV2() reinitializer(2) public {
* __ERC20Permit_init("MyToken");
* }
* }
* ```
*
* TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
* possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
*
* CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
* that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
*
* [CAUTION]
 
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node_modules/@openzeppelin/contracts-upgradeable/utils/AddressUpgradeable.sol

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)
pragma solidity ^0.8.1;
/**
* @dev Collection of functions related to the address type
*/
library AddressUpgradeable {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
*
* Furthermore, `isContract` will also return true if the target contract within
* the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
* which only has an effect at the end of a transaction.
* ====
*
* [IMPORTANT]
* ====
* You shouldn't rely on `isContract` to protect against flash loan attacks!
*
* Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
* like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
* constructor.
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize/address.code.length, which returns 0
 
 
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node_modules/@openzeppelin/contracts-upgradeable/utils/ContextUpgradeable.sol

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.4) (utils/Context.sol)
pragma solidity ^0.8.0;
import {Initializable} from "../proxy/utils/Initializable.sol";
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract ContextUpgradeable is Initializable {
function __Context_init() internal onlyInitializing {
}
function __Context_init_unchained() internal onlyInitializing {
}
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
function _contextSuffixLength() internal view virtual returns (uint256) {
return 0;
}
/**
* @dev This empty reserved space is put in place to allow future versions to add new
* variables without shifting down storage in the inheritance chain.
* See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
*/
uint256[50] private __gap;
}
 
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node_modules/@openzeppelin/contracts/interfaces/IERC1271.sol

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (interfaces/IERC1271.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC1271 standard signature validation method for
* contracts as defined in https://eips.ethereum.org/EIPS/eip-1271[ERC-1271].
*
* _Available since v4.1._
*/
interface IERC1271 {
/**
* @dev Should return whether the signature provided is valid for the provided data
* @param hash Hash of the data to be signed
* @param signature Signature byte array associated with _data
*/
function isValidSignature(bytes32 hash, bytes memory signature) external view returns (bytes4 magicValue);
}
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node_modules/@openzeppelin/contracts/interfaces/IERC1967.sol

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (interfaces/IERC1967.sol)
pragma solidity ^0.8.0;
/**
* @dev ERC-1967: Proxy Storage Slots. This interface contains the events defined in the ERC.
*
* _Available since v4.8.3._
*/
interface IERC1967 {
/**
* @dev Emitted when the implementation is upgraded.
*/
event Upgraded(address indexed implementation);
/**
* @dev Emitted when the admin account has changed.
*/
event AdminChanged(address previousAdmin, address newAdmin);
/**
* @dev Emitted when the beacon is changed.
*/
event BeaconUpgraded(address indexed beacon);
}
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node_modules/@openzeppelin/contracts/interfaces/draft-IERC1822.sol

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (interfaces/draft-IERC1822.sol)
pragma solidity ^0.8.0;
/**
* @dev ERC1822: Universal Upgradeable Proxy Standard (UUPS) documents a method for upgradeability through a simplified
* proxy whose upgrades are fully controlled by the current implementation.
*/
interface IERC1822Proxiable {
/**
* @dev Returns the storage slot that the proxiable contract assumes is being used to store the implementation
* address.
*
* IMPORTANT: A proxy pointing at a proxiable contract should not be considered proxiable itself, because this risks
* bricking a proxy that upgrades to it, by delegating to itself until out of gas. Thus it is critical that this
* function revert if invoked through a proxy.
*/
function proxiableUUID() external view returns (bytes32);
}
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node_modules/@openzeppelin/contracts/proxy/ERC1967/ERC1967Upgrade.sol

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (proxy/ERC1967/ERC1967Upgrade.sol)
pragma solidity ^0.8.2;
import "../beacon/IBeacon.sol";
import "../../interfaces/IERC1967.sol";
import "../../interfaces/draft-IERC1822.sol";
import "../../utils/Address.sol";
import "../../utils/StorageSlot.sol";
/**
* @dev This abstract contract provides getters and event emitting update functions for
* https://eips.ethereum.org/EIPS/eip-1967[EIP1967] slots.
*
* _Available since v4.1._
*/
abstract contract ERC1967Upgrade is IERC1967 {
// This is the keccak-256 hash of "eip1967.proxy.rollback" subtracted by 1
bytes32 private constant _ROLLBACK_SLOT = 0x4910fdfa16fed3260ed0e7147f7cc6da11a60208b5b9406d12a635614ffd9143;
/**
* @dev Storage slot with the address of the current implementation.
* This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
* validated in the constructor.
*/
bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
/**
* @dev Returns the current implementation address.
*/
function _getImplementation() internal view returns (address) {
return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
}
/**
* @dev Stores a new address in the EIP1967 implementation slot.
*/
function _setImplementation(address newImplementation) private {
require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
 
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node_modules/@openzeppelin/contracts/proxy/beacon/IBeacon.sol

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (proxy/beacon/IBeacon.sol)
pragma solidity ^0.8.0;
/**
* @dev This is the interface that {BeaconProxy} expects of its beacon.
*/
interface IBeacon {
/**
* @dev Must return an address that can be used as a delegate call target.
*
* {BeaconProxy} will check that this address is a contract.
*/
function implementation() external view returns (address);
}
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node_modules/@openzeppelin/contracts/proxy/utils/UUPSUpgradeable.sol

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (proxy/utils/UUPSUpgradeable.sol)
pragma solidity ^0.8.0;
import "../../interfaces/draft-IERC1822.sol";
import "../ERC1967/ERC1967Upgrade.sol";
/**
* @dev An upgradeability mechanism designed for UUPS proxies. The functions included here can perform an upgrade of an
* {ERC1967Proxy}, when this contract is set as the implementation behind such a proxy.
*
* A security mechanism ensures that an upgrade does not turn off upgradeability accidentally, although this risk is
* reinstated if the upgrade retains upgradeability but removes the security mechanism, e.g. by replacing
* `UUPSUpgradeable` with a custom implementation of upgrades.
*
* The {_authorizeUpgrade} function must be overridden to include access restriction to the upgrade mechanism.
*
* _Available since v4.1._
*/
abstract contract UUPSUpgradeable is IERC1822Proxiable, ERC1967Upgrade {
/// @custom:oz-upgrades-unsafe-allow state-variable-immutable state-variable-assignment
address private immutable __self = address(this);
/**
* @dev Check that the execution is being performed through a delegatecall call and that the execution context is
* a proxy contract with an implementation (as defined in ERC1967) pointing to self. This should only be the case
* for UUPS and transparent proxies that are using the current contract as their implementation. Execution of a
* function through ERC1167 minimal proxies (clones) would not normally pass this test, but is not guaranteed to
* fail.
*/
modifier onlyProxy() {
require(address(this) != __self, "Function must be called through delegatecall");
require(_getImplementation() == __self, "Function must be called through active proxy");
_;
}
/**
* @dev Check that the execution is not being performed through a delegate call. This allows a function to be
* callable on the implementing contract but not through proxies.
*/
 
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node_modules/@openzeppelin/contracts/token/ERC20/IERC20.sol

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `to`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address to, uint256 amount) external returns (bool);
 
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node_modules/@openzeppelin/contracts/token/ERC20/extensions/IERC20Permit.sol

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.4) (token/ERC20/extensions/IERC20Permit.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
* https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
*
* Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
* presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
* need to send a transaction, and thus is not required to hold Ether at all.
*
* ==== Security Considerations
*
* There are two important considerations concerning the use of `permit`. The first is that a valid permit signature
* expresses an allowance, and it should not be assumed to convey additional meaning. In particular, it should not be
* considered as an intention to spend the allowance in any specific way. The second is that because permits have
* built-in replay protection and can be submitted by anyone, they can be frontrun. A protocol that uses permits should
* take this into consideration and allow a `permit` call to fail. Combining these two aspects, a pattern that may be
* generally recommended is:
*
* ```solidity
* function doThingWithPermit(..., uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public {
* try token.permit(msg.sender, address(this), value, deadline, v, r, s) {} catch {}
* doThing(..., value);
* }
*
* function doThing(..., uint256 value) public {
* token.safeTransferFrom(msg.sender, address(this), value);
* ...
* }
* ```
*
* Observe that: 1) `msg.sender` is used as the owner, leaving no ambiguity as to the signer intent, and 2) the use of
* `try/catch` allows the permit to fail and makes the code tolerant to frontrunning. (See also
* {SafeERC20-safeTransferFrom}).
*
* Additionally, note that smart contract wallets (such as Argent or Safe) are not able to produce permit signatures, so
* contracts should have entry points that don't rely on permit.
*/
 
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node_modules/@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.3) (token/ERC20/utils/SafeERC20.sol)
pragma solidity ^0.8.0;
import "../IERC20.sol";
import "../extensions/IERC20Permit.sol";
import "../../../utils/Address.sol";
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using Address for address;
/**
* @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,
* non-reverting calls are assumed to be successful.
*/
function safeTransfer(IERC20 token, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
/**
* @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the
* calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.
*/
function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
 
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node_modules/@openzeppelin/contracts/utils/Address.sol

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)
pragma solidity ^0.8.1;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
*
* Furthermore, `isContract` will also return true if the target contract within
* the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
* which only has an effect at the end of a transaction.
* ====
*
* [IMPORTANT]
* ====
* You shouldn't rely on `isContract` to protect against flash loan attacks!
*
* Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
* like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
* constructor.
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize/address.code.length, which returns 0
 
 
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node_modules/@openzeppelin/contracts/utils/StorageSlot.sol

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/StorageSlot.sol)
// This file was procedurally generated from scripts/generate/templates/StorageSlot.js.
pragma solidity ^0.8.0;
/**
* @dev Library for reading and writing primitive types to specific storage slots.
*
* Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts.
* This library helps with reading and writing to such slots without the need for inline assembly.
*
* The functions in this library return Slot structs that contain a `value` member that can be used to read or write.
*
* Example usage to set ERC1967 implementation slot:
* ```solidity
* contract ERC1967 {
* bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
*
* function _getImplementation() internal view returns (address) {
* return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
* }
*
* function _setImplementation(address newImplementation) internal {
* require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
* StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
* }
* }
* ```
*
* _Available since v4.1 for `address`, `bool`, `bytes32`, `uint256`._
* _Available since v4.9 for `string`, `bytes`._
*/
library StorageSlot {
struct AddressSlot {
address value;
}
struct BooleanSlot {
bool value;
}
 
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node_modules/@openzeppelin/contracts/utils/introspection/IERC165.sol

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC165 standard, as defined in the
* https://eips.ethereum.org/EIPS/eip-165[EIP].
*
* Implementers can declare support of contract interfaces, which can then be
* queried by others ({ERC165Checker}).
*
* For an implementation, see {ERC165}.
*/
interface IERC165 {
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
* to learn more about how these ids are created.
*
* This function call must use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
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Compiler Settings

{"viaIR":false,"remappings":["@openzeppelin/contracts-upgradeable/=node_modules/@openzeppelin/contracts-upgradeable/","@openzeppelin/contracts/=node_modules/@openzeppelin/contracts/","solady/=node_modules/solady/","forge-std/=node_modules/forge-std/","ds-test/=node_modules/ds-test/src/","p256-verifier/=node_modules/p256-verifier/","forge-safe/=node_modules/forge-safe/"],"outputSelection":{"*":{"*":["*"],"":["*"]}},"optimizer":{"runs":200,"enabled":true},"metadata":{"useLiteralContent":false,"bytecodeHash":"ipfs","appendCBOR":true},"libraries":{},"evmVersion":"cancun"}
              

Contract ABI

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             

Deployed ByteCode

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