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Latest 25 from a total of 649 transactions
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Claim | 20185741 | 23 hrs ago | IN | 0 ETH | 0.00060073 | ||||
Claim | 20177839 | 2 days ago | IN | 0 ETH | 0.00084745 | ||||
Claim | 20167851 | 3 days ago | IN | 0 ETH | 0.00033534 | ||||
Claim | 20167024 | 3 days ago | IN | 0 ETH | 0.0004173 | ||||
Claim | 20165560 | 3 days ago | IN | 0 ETH | 0.00031689 | ||||
Claim | 20157606 | 4 days ago | IN | 0 ETH | 0.00019345 | ||||
Claim | 20127450 | 9 days ago | IN | 0 ETH | 0.00149477 | ||||
Claim | 20117554 | 10 days ago | IN | 0 ETH | 0.00047063 | ||||
Claim | 20071475 | 16 days ago | IN | 0 ETH | 0.00127104 | ||||
Claim | 20059499 | 18 days ago | IN | 0 ETH | 0.00038329 | ||||
Claim | 20053188 | 19 days ago | IN | 0 ETH | 0.00047842 | ||||
Claim | 20050072 | 19 days ago | IN | 0 ETH | 0.00051254 | ||||
Claim | 20038268 | 21 days ago | IN | 0 ETH | 0.00091497 | ||||
Claim | 20023020 | 23 days ago | IN | 0 ETH | 0.00063003 | ||||
Claim | 19994638 | 27 days ago | IN | 0 ETH | 0.00042257 | ||||
Claim | 19993681 | 27 days ago | IN | 0 ETH | 0.00055633 | ||||
Claim | 19959205 | 32 days ago | IN | 0 ETH | 0.00063108 | ||||
Claim | 19957777 | 32 days ago | IN | 0 ETH | 0.00027462 | ||||
Claim | 19929805 | 36 days ago | IN | 0 ETH | 0.00049282 | ||||
Claim | 19922348 | 37 days ago | IN | 0 ETH | 0.00076498 | ||||
Claim | 19919900 | 38 days ago | IN | 0 ETH | 0.00215667 | ||||
Claim | 19877909 | 44 days ago | IN | 0 ETH | 0.00082092 | ||||
Claim | 19826943 | 51 days ago | IN | 0 ETH | 0.00067262 | ||||
Claim | 19797688 | 55 days ago | IN | 0 ETH | 0.00055823 | ||||
Claim | 19794531 | 55 days ago | IN | 0 ETH | 0.00044124 |
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Contract Source Code Verified (Exact Match)
Contract Name:
MerkleClaim
Compiler Version
v0.8.23+commit.f704f362
Optimization Enabled:
Yes with 200 runs
Other Settings:
paris EvmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: AGPL-3.0-only pragma solidity >=0.8.0; /// ============ Imports ============ import "@openzeppelin/contracts/token/ERC20/ERC20.sol"; import "@openzeppelin/contracts/utils/cryptography/MerkleProof.sol"; import "@openzeppelin/contracts/access/Ownable.sol"; /// @title MerkleClaimERC20 /// @notice ERC20 claimable by members of a merkle tree /// @author Anish Agnihotri <[email protected]> /// @dev Solmate ERC20 includes unused _burn logic that can be removed to optimize deployment cost contract MerkleClaim is Ownable { /// ============ Immutable storage ============ /// @notice ERC20-claimee inclusion root bytes32 public immutable merkleRoot; bool public open; ERC20 public token; /// ============ Mutable storage ============ /// @notice Mapping of addresses who have claimed tokens mapping(address => bool) public hasClaimed; /// ============ Errors ============ /// @notice Thrown if address has already claimed error AlreadyClaimed(); /// @notice Thrown if address/amount are not part of Merkle tree error NotInMerkle(); /// ============ Constructor ============ /// @notice Creates a new MerkleClaimERC20 contract /// @param _token of token /// @param _merkleRoot of claimees /// @param _initialOwner of contract constructor( ERC20 _token, bytes32 _merkleRoot, address _initialOwner ) Ownable(_initialOwner) { merkleRoot = _merkleRoot; // Update root token = _token; } /// ============ Events ============ /// @notice Emitted after a successful token claim /// @param to recipient of claim /// @param amount of tokens claimed event Claim(address indexed to, uint256 amount); /// ============ Functions ============ /// @notice Allows claiming tokens if address is part of merkle tree /// @param amount of tokens owed to claimee /// @param proof merkle proof to prove address and amount are in tree function claim(uint256 amount, bytes32[] calldata proof) external { // check open if (!open) revert("not open"); // Throw if address has already claimed tokens if (hasClaimed[msg.sender]) revert AlreadyClaimed(); // Verify merkle proof, or revert if not in tree bytes32 leaf = keccak256(abi.encodePacked(msg.sender, amount)); bool isValidLeaf = MerkleProof.verify(proof, merkleRoot, leaf); if (!isValidLeaf) revert NotInMerkle(); // Set address to claimed hasClaimed[msg.sender] = true; token.transfer(msg.sender, amount); } function withdrawTokens() public onlyOwner { uint256 balance = token.balanceOf(address(this)); token.transfer(msg.sender, balance); } function setOpen(bool _open) public onlyOwner { open = _open; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/ERC20.sol) pragma solidity ^0.8.20; import {IERC20} from "./IERC20.sol"; import {IERC20Metadata} from "./extensions/IERC20Metadata.sol"; import {Context} from "../../utils/Context.sol"; import {IERC20Errors} from "../../interfaces/draft-IERC6093.sol"; /** * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * * TIP: For a detailed writeup see our guide * https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * The default value of {decimals} is 18. To change this, you should override * this function so it returns a different value. * * We have followed general OpenZeppelin Contracts guidelines: functions revert * instead returning `false` on failure. This behavior is nonetheless * conventional and does not conflict with the expectations of ERC20 * applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. */ abstract contract ERC20 is Context, IERC20, IERC20Metadata, IERC20Errors { mapping(address account => uint256) private _balances; mapping(address account => mapping(address spender => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; /** * @dev Sets the values for {name} and {symbol}. * * All two of these values are immutable: they can only be set once during * construction. */ constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev Returns the name of the token. */ function name() public view virtual returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view virtual returns (string memory) { return _symbol; } /** * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5.05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the default value returned by this function, unless * it's overridden. * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. */ function decimals() public view virtual returns (uint8) { return 18; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view virtual returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view virtual returns (uint256) { return _balances[account]; } /** * @dev See {IERC20-transfer}. * * Requirements: * * - `to` cannot be the zero address. * - the caller must have a balance of at least `value`. */ function transfer(address to, uint256 value) public virtual returns (bool) { address owner = _msgSender(); _transfer(owner, to, value); return true; } /** * @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view virtual returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * NOTE: If `value` is the maximum `uint256`, the allowance is not updated on * `transferFrom`. This is semantically equivalent to an infinite approval. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 value) public virtual returns (bool) { address owner = _msgSender(); _approve(owner, spender, value); return true; } /** * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}. * * NOTE: Does not update the allowance if the current allowance * is the maximum `uint256`. * * Requirements: * * - `from` and `to` cannot be the zero address. * - `from` must have a balance of at least `value`. * - the caller must have allowance for ``from``'s tokens of at least * `value`. */ function transferFrom(address from, address to, uint256 value) public virtual returns (bool) { address spender = _msgSender(); _spendAllowance(from, spender, value); _transfer(from, to, value); return true; } /** * @dev Moves a `value` amount of tokens from `from` to `to`. * * This internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * NOTE: This function is not virtual, {_update} should be overridden instead. */ function _transfer(address from, address to, uint256 value) internal { if (from == address(0)) { revert ERC20InvalidSender(address(0)); } if (to == address(0)) { revert ERC20InvalidReceiver(address(0)); } _update(from, to, value); } /** * @dev Transfers a `value` amount of tokens from `from` to `to`, or alternatively mints (or burns) if `from` * (or `to`) is the zero address. All customizations to transfers, mints, and burns should be done by overriding * this function. * * Emits a {Transfer} event. */ function _update(address from, address to, uint256 value) internal virtual { if (from == address(0)) { // Overflow check required: The rest of the code assumes that totalSupply never overflows _totalSupply += value; } else { uint256 fromBalance = _balances[from]; if (fromBalance < value) { revert ERC20InsufficientBalance(from, fromBalance, value); } unchecked { // Overflow not possible: value <= fromBalance <= totalSupply. _balances[from] = fromBalance - value; } } if (to == address(0)) { unchecked { // Overflow not possible: value <= totalSupply or value <= fromBalance <= totalSupply. _totalSupply -= value; } } else { unchecked { // Overflow not possible: balance + value is at most totalSupply, which we know fits into a uint256. _balances[to] += value; } } emit Transfer(from, to, value); } /** * @dev Creates a `value` amount of tokens and assigns them to `account`, by transferring it from address(0). * Relies on the `_update` mechanism * * Emits a {Transfer} event with `from` set to the zero address. * * NOTE: This function is not virtual, {_update} should be overridden instead. */ function _mint(address account, uint256 value) internal { if (account == address(0)) { revert ERC20InvalidReceiver(address(0)); } _update(address(0), account, value); } /** * @dev Destroys a `value` amount of tokens from `account`, lowering the total supply. * Relies on the `_update` mechanism. * * Emits a {Transfer} event with `to` set to the zero address. * * NOTE: This function is not virtual, {_update} should be overridden instead */ function _burn(address account, uint256 value) internal { if (account == address(0)) { revert ERC20InvalidSender(address(0)); } _update(account, address(0), value); } /** * @dev Sets `value` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. * * Overrides to this logic should be done to the variant with an additional `bool emitEvent` argument. */ function _approve(address owner, address spender, uint256 value) internal { _approve(owner, spender, value, true); } /** * @dev Variant of {_approve} with an optional flag to enable or disable the {Approval} event. * * By default (when calling {_approve}) the flag is set to true. On the other hand, approval changes made by * `_spendAllowance` during the `transferFrom` operation set the flag to false. This saves gas by not emitting any * `Approval` event during `transferFrom` operations. * * Anyone who wishes to continue emitting `Approval` events on the`transferFrom` operation can force the flag to * true using the following override: * ``` * function _approve(address owner, address spender, uint256 value, bool) internal virtual override { * super._approve(owner, spender, value, true); * } * ``` * * Requirements are the same as {_approve}. */ function _approve(address owner, address spender, uint256 value, bool emitEvent) internal virtual { if (owner == address(0)) { revert ERC20InvalidApprover(address(0)); } if (spender == address(0)) { revert ERC20InvalidSpender(address(0)); } _allowances[owner][spender] = value; if (emitEvent) { emit Approval(owner, spender, value); } } /** * @dev Updates `owner` s allowance for `spender` based on spent `value`. * * Does not update the allowance value in case of infinite allowance. * Revert if not enough allowance is available. * * Does not emit an {Approval} event. */ function _spendAllowance(address owner, address spender, uint256 value) internal virtual { uint256 currentAllowance = allowance(owner, spender); if (currentAllowance != type(uint256).max) { if (currentAllowance < value) { revert ERC20InsufficientAllowance(spender, currentAllowance, value); } unchecked { _approve(owner, spender, currentAllowance - value, false); } } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/cryptography/MerkleProof.sol) pragma solidity ^0.8.20; /** * @dev These functions deal with verification of Merkle Tree proofs. * * The tree and the proofs can be generated using our * https://github.com/OpenZeppelin/merkle-tree[JavaScript library]. * You will find a quickstart guide in the readme. * * WARNING: You should avoid using leaf values that are 64 bytes long prior to * hashing, or use a hash function other than keccak256 for hashing leaves. * This is because the concatenation of a sorted pair of internal nodes in * the Merkle tree could be reinterpreted as a leaf value. * OpenZeppelin's JavaScript library generates Merkle trees that are safe * against this attack out of the box. */ library MerkleProof { /** *@dev The multiproof provided is not valid. */ error MerkleProofInvalidMultiproof(); /** * @dev Returns true if a `leaf` can be proved to be a part of a Merkle tree * defined by `root`. For this, a `proof` must be provided, containing * sibling hashes on the branch from the leaf to the root of the tree. Each * pair of leaves and each pair of pre-images are assumed to be sorted. */ function verify(bytes32[] memory proof, bytes32 root, bytes32 leaf) internal pure returns (bool) { return processProof(proof, leaf) == root; } /** * @dev Calldata version of {verify} */ function verifyCalldata(bytes32[] calldata proof, bytes32 root, bytes32 leaf) internal pure returns (bool) { return processProofCalldata(proof, leaf) == root; } /** * @dev Returns the rebuilt hash obtained by traversing a Merkle tree up * from `leaf` using `proof`. A `proof` is valid if and only if the rebuilt * hash matches the root of the tree. When processing the proof, the pairs * of leafs & pre-images are assumed to be sorted. */ function processProof(bytes32[] memory proof, bytes32 leaf) internal pure returns (bytes32) { bytes32 computedHash = leaf; for (uint256 i = 0; i < proof.length; i++) { computedHash = _hashPair(computedHash, proof[i]); } return computedHash; } /** * @dev Calldata version of {processProof} */ function processProofCalldata(bytes32[] calldata proof, bytes32 leaf) internal pure returns (bytes32) { bytes32 computedHash = leaf; for (uint256 i = 0; i < proof.length; i++) { computedHash = _hashPair(computedHash, proof[i]); } return computedHash; } /** * @dev Returns true if the `leaves` can be simultaneously proven to be a part of a Merkle tree defined by * `root`, according to `proof` and `proofFlags` as described in {processMultiProof}. * * CAUTION: Not all Merkle trees admit multiproofs. See {processMultiProof} for details. */ function multiProofVerify( bytes32[] memory proof, bool[] memory proofFlags, bytes32 root, bytes32[] memory leaves ) internal pure returns (bool) { return processMultiProof(proof, proofFlags, leaves) == root; } /** * @dev Calldata version of {multiProofVerify} * * CAUTION: Not all Merkle trees admit multiproofs. See {processMultiProof} for details. */ function multiProofVerifyCalldata( bytes32[] calldata proof, bool[] calldata proofFlags, bytes32 root, bytes32[] memory leaves ) internal pure returns (bool) { return processMultiProofCalldata(proof, proofFlags, leaves) == root; } /** * @dev Returns the root of a tree reconstructed from `leaves` and sibling nodes in `proof`. The reconstruction * proceeds by incrementally reconstructing all inner nodes by combining a leaf/inner node with either another * leaf/inner node or a proof sibling node, depending on whether each `proofFlags` item is true or false * respectively. * * CAUTION: Not all Merkle trees admit multiproofs. To use multiproofs, it is sufficient to ensure that: 1) the tree * is complete (but not necessarily perfect), 2) the leaves to be proven are in the opposite order they are in the * tree (i.e., as seen from right to left starting at the deepest layer and continuing at the next layer). */ function processMultiProof( bytes32[] memory proof, bool[] memory proofFlags, bytes32[] memory leaves ) internal pure returns (bytes32 merkleRoot) { // This function rebuilds the root hash by traversing the tree up from the leaves. The root is rebuilt by // consuming and producing values on a queue. The queue starts with the `leaves` array, then goes onto the // `hashes` array. At the end of the process, the last hash in the `hashes` array should contain the root of // the Merkle tree. uint256 leavesLen = leaves.length; uint256 proofLen = proof.length; uint256 totalHashes = proofFlags.length; // Check proof validity. if (leavesLen + proofLen != totalHashes + 1) { revert MerkleProofInvalidMultiproof(); } // The xxxPos values are "pointers" to the next value to consume in each array. All accesses are done using // `xxx[xxxPos++]`, which return the current value and increment the pointer, thus mimicking a queue's "pop". bytes32[] memory hashes = new bytes32[](totalHashes); uint256 leafPos = 0; uint256 hashPos = 0; uint256 proofPos = 0; // At each step, we compute the next hash using two values: // - a value from the "main queue". If not all leaves have been consumed, we get the next leaf, otherwise we // get the next hash. // - depending on the flag, either another value from the "main queue" (merging branches) or an element from the // `proof` array. for (uint256 i = 0; i < totalHashes; i++) { bytes32 a = leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++]; bytes32 b = proofFlags[i] ? (leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++]) : proof[proofPos++]; hashes[i] = _hashPair(a, b); } if (totalHashes > 0) { if (proofPos != proofLen) { revert MerkleProofInvalidMultiproof(); } unchecked { return hashes[totalHashes - 1]; } } else if (leavesLen > 0) { return leaves[0]; } else { return proof[0]; } } /** * @dev Calldata version of {processMultiProof}. * * CAUTION: Not all Merkle trees admit multiproofs. See {processMultiProof} for details. */ function processMultiProofCalldata( bytes32[] calldata proof, bool[] calldata proofFlags, bytes32[] memory leaves ) internal pure returns (bytes32 merkleRoot) { // This function rebuilds the root hash by traversing the tree up from the leaves. The root is rebuilt by // consuming and producing values on a queue. The queue starts with the `leaves` array, then goes onto the // `hashes` array. At the end of the process, the last hash in the `hashes` array should contain the root of // the Merkle tree. uint256 leavesLen = leaves.length; uint256 proofLen = proof.length; uint256 totalHashes = proofFlags.length; // Check proof validity. if (leavesLen + proofLen != totalHashes + 1) { revert MerkleProofInvalidMultiproof(); } // The xxxPos values are "pointers" to the next value to consume in each array. All accesses are done using // `xxx[xxxPos++]`, which return the current value and increment the pointer, thus mimicking a queue's "pop". bytes32[] memory hashes = new bytes32[](totalHashes); uint256 leafPos = 0; uint256 hashPos = 0; uint256 proofPos = 0; // At each step, we compute the next hash using two values: // - a value from the "main queue". If not all leaves have been consumed, we get the next leaf, otherwise we // get the next hash. // - depending on the flag, either another value from the "main queue" (merging branches) or an element from the // `proof` array. for (uint256 i = 0; i < totalHashes; i++) { bytes32 a = leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++]; bytes32 b = proofFlags[i] ? (leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++]) : proof[proofPos++]; hashes[i] = _hashPair(a, b); } if (totalHashes > 0) { if (proofPos != proofLen) { revert MerkleProofInvalidMultiproof(); } unchecked { return hashes[totalHashes - 1]; } } else if (leavesLen > 0) { return leaves[0]; } else { return proof[0]; } } /** * @dev Sorts the pair (a, b) and hashes the result. */ function _hashPair(bytes32 a, bytes32 b) private pure returns (bytes32) { return a < b ? _efficientHash(a, b) : _efficientHash(b, a); } /** * @dev Implementation of keccak256(abi.encode(a, b)) that doesn't allocate or expand memory. */ function _efficientHash(bytes32 a, bytes32 b) private pure returns (bytes32 value) { /// @solidity memory-safe-assembly assembly { mstore(0x00, a) mstore(0x20, b) value := keccak256(0x00, 0x40) } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol) pragma solidity ^0.8.20; import {Context} from "../utils/Context.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. * * The initial owner is set to the address provided by the deployer. 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 Ownable is Context { address private _owner; /** * @dev The caller account is not authorized to perform an operation. */ error OwnableUnauthorizedAccount(address account); /** * @dev The owner is not a valid owner account. (eg. `address(0)`) */ error OwnableInvalidOwner(address owner); event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the address provided by the deployer as the initial owner. */ constructor(address initialOwner) { if (initialOwner == address(0)) { revert OwnableInvalidOwner(address(0)); } _transferOwnership(initialOwner); } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { _checkOwner(); _; } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if the sender is not the owner. */ function _checkOwner() internal view virtual { if (owner() != _msgSender()) { revert OwnableUnauthorizedAccount(_msgSender()); } } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby disabling any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { if (newOwner == address(0)) { revert OwnableInvalidOwner(address(0)); } _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.20; /** * @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 value of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the value of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves a `value` amount of 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 value) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets a `value` amount of tokens as the allowance of `spender` over the * caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 value) external returns (bool); /** * @dev Moves a `value` amount of tokens from `from` to `to` using the * allowance mechanism. `value` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address from, address to, uint256 value) external returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/IERC20Metadata.sol) pragma solidity ^0.8.20; import {IERC20} from "../IERC20.sol"; /** * @dev Interface for the optional metadata functions from the ERC20 standard. */ interface IERC20Metadata is IERC20 { /** * @dev Returns the name of the token. */ function name() external view returns (string memory); /** * @dev Returns the symbol of the token. */ function symbol() external view returns (string memory); /** * @dev Returns the decimals places of the token. */ function decimals() external view returns (uint8); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.sol) pragma solidity ^0.8.20; /** * @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 Context { 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; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (interfaces/draft-IERC6093.sol) pragma solidity ^0.8.20; /** * @dev Standard ERC20 Errors * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC20 tokens. */ interface IERC20Errors { /** * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers. * @param sender Address whose tokens are being transferred. * @param balance Current balance for the interacting account. * @param needed Minimum amount required to perform a transfer. */ error ERC20InsufficientBalance(address sender, uint256 balance, uint256 needed); /** * @dev Indicates a failure with the token `sender`. Used in transfers. * @param sender Address whose tokens are being transferred. */ error ERC20InvalidSender(address sender); /** * @dev Indicates a failure with the token `receiver`. Used in transfers. * @param receiver Address to which tokens are being transferred. */ error ERC20InvalidReceiver(address receiver); /** * @dev Indicates a failure with the `spender`’s `allowance`. Used in transfers. * @param spender Address that may be allowed to operate on tokens without being their owner. * @param allowance Amount of tokens a `spender` is allowed to operate with. * @param needed Minimum amount required to perform a transfer. */ error ERC20InsufficientAllowance(address spender, uint256 allowance, uint256 needed); /** * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals. * @param approver Address initiating an approval operation. */ error ERC20InvalidApprover(address approver); /** * @dev Indicates a failure with the `spender` to be approved. Used in approvals. * @param spender Address that may be allowed to operate on tokens without being their owner. */ error ERC20InvalidSpender(address spender); } /** * @dev Standard ERC721 Errors * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC721 tokens. */ interface IERC721Errors { /** * @dev Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in EIP-20. * Used in balance queries. * @param owner Address of the current owner of a token. */ error ERC721InvalidOwner(address owner); /** * @dev Indicates a `tokenId` whose `owner` is the zero address. * @param tokenId Identifier number of a token. */ error ERC721NonexistentToken(uint256 tokenId); /** * @dev Indicates an error related to the ownership over a particular token. Used in transfers. * @param sender Address whose tokens are being transferred. * @param tokenId Identifier number of a token. * @param owner Address of the current owner of a token. */ error ERC721IncorrectOwner(address sender, uint256 tokenId, address owner); /** * @dev Indicates a failure with the token `sender`. Used in transfers. * @param sender Address whose tokens are being transferred. */ error ERC721InvalidSender(address sender); /** * @dev Indicates a failure with the token `receiver`. Used in transfers. * @param receiver Address to which tokens are being transferred. */ error ERC721InvalidReceiver(address receiver); /** * @dev Indicates a failure with the `operator`’s approval. Used in transfers. * @param operator Address that may be allowed to operate on tokens without being their owner. * @param tokenId Identifier number of a token. */ error ERC721InsufficientApproval(address operator, uint256 tokenId); /** * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals. * @param approver Address initiating an approval operation. */ error ERC721InvalidApprover(address approver); /** * @dev Indicates a failure with the `operator` to be approved. Used in approvals. * @param operator Address that may be allowed to operate on tokens without being their owner. */ error ERC721InvalidOperator(address operator); } /** * @dev Standard ERC1155 Errors * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC1155 tokens. */ interface IERC1155Errors { /** * @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers. * @param sender Address whose tokens are being transferred. * @param balance Current balance for the interacting account. * @param needed Minimum amount required to perform a transfer. * @param tokenId Identifier number of a token. */ error ERC1155InsufficientBalance(address sender, uint256 balance, uint256 needed, uint256 tokenId); /** * @dev Indicates a failure with the token `sender`. Used in transfers. * @param sender Address whose tokens are being transferred. */ error ERC1155InvalidSender(address sender); /** * @dev Indicates a failure with the token `receiver`. Used in transfers. * @param receiver Address to which tokens are being transferred. */ error ERC1155InvalidReceiver(address receiver); /** * @dev Indicates a failure with the `operator`’s approval. Used in transfers. * @param operator Address that may be allowed to operate on tokens without being their owner. * @param owner Address of the current owner of a token. */ error ERC1155MissingApprovalForAll(address operator, address owner); /** * @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals. * @param approver Address initiating an approval operation. */ error ERC1155InvalidApprover(address approver); /** * @dev Indicates a failure with the `operator` to be approved. Used in approvals. * @param operator Address that may be allowed to operate on tokens without being their owner. */ error ERC1155InvalidOperator(address operator); /** * @dev Indicates an array length mismatch between ids and values in a safeBatchTransferFrom operation. * Used in batch transfers. * @param idsLength Length of the array of token identifiers * @param valuesLength Length of the array of token amounts */ error ERC1155InvalidArrayLength(uint256 idsLength, uint256 valuesLength); }
{ "remappings": [ "@openzeppelin/=lib/openzeppelin-contracts/", "@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/", "ds-test/=lib/forge-std/lib/ds-test/src/", "erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/", "forge-std/=lib/forge-std/src/", "openzeppelin-contracts/=lib/openzeppelin-contracts/" ], "optimizer": { "enabled": true, "runs": 200 }, "metadata": { "useLiteralContent": false, "bytecodeHash": "ipfs", "appendCBOR": true }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "evmVersion": "paris", "libraries": {} }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
[{"inputs":[{"internalType":"contract ERC20","name":"_token","type":"address"},{"internalType":"bytes32","name":"_merkleRoot","type":"bytes32"},{"internalType":"address","name":"_initialOwner","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"AlreadyClaimed","type":"error"},{"inputs":[],"name":"NotInMerkle","type":"error"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"OwnableInvalidOwner","type":"error"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"OwnableUnauthorizedAccount","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Claim","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"},{"internalType":"bytes32[]","name":"proof","type":"bytes32[]"}],"name":"claim","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"hasClaimed","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"merkleRoot","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"open","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bool","name":"_open","type":"bool"}],"name":"setOpen","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"token","outputs":[{"internalType":"contract ERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"withdrawTokens","outputs":[],"stateMutability":"nonpayable","type":"function"}]
Contract Creation Code
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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)
000000000000000000000000686f2404e77ab0d9070a46cdfb0b7fecdd2318b003aff29cee6ef87ad58e10002510c47880bfa3c0865f0243db3a98635ad7d148000000000000000000000000d3344596bf243331636b6fca4724e2a6a901ee90
-----Decoded View---------------
Arg [0] : _token (address): 0x686f2404e77Ab0d9070a46cdfb0B7feCDD2318b0
Arg [1] : _merkleRoot (bytes32): 0x03aff29cee6ef87ad58e10002510c47880bfa3c0865f0243db3a98635ad7d148
Arg [2] : _initialOwner (address): 0xd3344596BF243331636B6FCA4724E2A6A901ee90
-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 000000000000000000000000686f2404e77ab0d9070a46cdfb0b7fecdd2318b0
Arg [1] : 03aff29cee6ef87ad58e10002510c47880bfa3c0865f0243db3a98635ad7d148
Arg [2] : 000000000000000000000000d3344596bf243331636b6fca4724e2a6a901ee90
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Chain | Token | Portfolio % | Price | Amount | Value |
---|---|---|---|---|---|
ETH | 100.00% | $0.082821 | 8,647,569 | $716,200.31 |
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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.