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Latest 25 from a total of 25 transactions
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Emergency Withdr... | 17643952 | 385 days ago | IN | 0 ETH | 0.00186894 | ||||
Emergency Withdr... | 16883056 | 493 days ago | IN | 0 ETH | 0.0003995 | ||||
Emergency Withdr... | 16883048 | 493 days ago | IN | 0 ETH | 0.0085812 | ||||
Emergency Withdr... | 16883024 | 493 days ago | IN | 0 ETH | 0.00047289 | ||||
Claim Rewards | 16879322 | 493 days ago | IN | 0 ETH | 0.00040605 | ||||
Claim Rewards | 16878108 | 493 days ago | IN | 0 ETH | 0.00044814 | ||||
Claim Rewards | 16878084 | 493 days ago | IN | 0 ETH | 0.00120829 | ||||
Claim Rewards | 16874690 | 494 days ago | IN | 0 ETH | 0.00033731 | ||||
Claim Rewards | 16874282 | 494 days ago | IN | 0 ETH | 0.0003059 | ||||
Claim Rewards | 16874233 | 494 days ago | IN | 0 ETH | 0.00033753 | ||||
Claim Rewards | 16873598 | 494 days ago | IN | 0 ETH | 0.00036427 | ||||
Claim Rewards | 16873240 | 494 days ago | IN | 0 ETH | 0.00044882 | ||||
Claim Rewards | 16872211 | 494 days ago | IN | 0 ETH | 0.00043917 | ||||
Claim Rewards | 16872183 | 494 days ago | IN | 0 ETH | 0.00048981 | ||||
Claim Rewards | 16872165 | 494 days ago | IN | 0 ETH | 0.00050346 | ||||
Claim Rewards | 16871101 | 494 days ago | IN | 0 ETH | 0.00068558 | ||||
Claim Rewards | 16870998 | 494 days ago | IN | 0 ETH | 0.00067952 | ||||
Claim Rewards | 16870848 | 494 days ago | IN | 0 ETH | 0.00190844 | ||||
Claim Rewards | 16870844 | 494 days ago | IN | 0 ETH | 0.00094105 | ||||
Claim Rewards | 16870792 | 494 days ago | IN | 0 ETH | 0.00198941 | ||||
Claim Rewards | 16870785 | 494 days ago | IN | 0 ETH | 0.00083235 | ||||
Transfer | 16870662 | 494 days ago | IN | 0.39790358 ETH | 0.00064557 | ||||
Claim Rewards | 16870636 | 494 days ago | IN | 0 ETH | 0.00195224 | ||||
Transfer | 16870132 | 494 days ago | IN | 0.025 ETH | 0.00053543 | ||||
0x60806040 | 16869899 | 494 days ago | IN | 0 ETH | 0.01571118 |
Latest 19 internal transactions
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Parent Transaction Hash | Block | From | To | |||
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17643952 | 385 days ago | 0.32254449 ETH | ||||
16879322 | 493 days ago | 0.00890135 ETH | ||||
16878108 | 493 days ago | 0.00599112 ETH | ||||
16878084 | 493 days ago | 0.008796 ETH | ||||
16874689 | 494 days ago | 0.00113452 ETH | ||||
16874281 | 494 days ago | 0.00189454 ETH | ||||
16874233 | 494 days ago | 0.00893467 ETH | ||||
16873598 | 494 days ago | 0.00433091 ETH | ||||
16873240 | 494 days ago | 0.00215754 ETH | ||||
16872211 | 494 days ago | 0.00757854 ETH | ||||
16872183 | 494 days ago | 0.01515818 ETH | ||||
16872165 | 494 days ago | 0.00189458 ETH | ||||
16871101 | 494 days ago | 0.00199957 ETH | ||||
16870998 | 494 days ago | 0.01332957 ETH | ||||
16870848 | 494 days ago | 0.00197189 ETH | ||||
16870844 | 494 days ago | 0.00788978 ETH | ||||
16870792 | 494 days ago | 0.00181374 ETH | ||||
16870785 | 494 days ago | 0.00437733 ETH | ||||
16870636 | 494 days ago | 0.00220517 ETH |
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Contract Name:
ClaimRewards
Compiler Version
v0.8.4+commit.c7e474f2
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; import "@openzeppelin/contracts/utils/cryptography/MerkleProof.sol"; import "@openzeppelin/contracts/utils/Strings.sol"; import "@openzeppelin/contracts/security/ReentrancyGuard.sol"; contract ClaimRewards is ReentrancyGuard { using Strings for uint256; address owner; address admin; bytes32 public root; mapping(uint256 => bool) rewardStatus; event Claim(uint256 _rewardId, uint256 _rewards); event UpdateAdmin(address oldOwner, address newOwner); event UpdateOwner(address oldOwner, address newOwner); constructor(address _admin, address _owner, bytes32 _root) { owner = _owner; admin = _admin; root = _root; } function setOwner(address _owner) external nonReentrant { require(owner == msg.sender, "not owner"); owner = _owner; emit UpdateOwner(msg.sender, owner); } function setRoot(bytes32 _root) external nonReentrant { require(admin == msg.sender, "not owner"); root = _root; } function setAdmin(address _admin) external nonReentrant { require(admin == msg.sender, "not owner"); admin = _admin; emit UpdateAdmin(msg.sender, owner); } function claimRewards( uint256 _rewardId, bytes32[] memory _merkleProof, uint256 _rewards ) external { require(!rewardStatus[_rewardId], "already claim"); bytes32 leafToCheck = keccak256( abi.encodePacked(_rewardId.toString(), ",", _rewards.toString()) ); require( MerkleProof.verify(_merkleProof, root, leafToCheck), "Incorrect land proof" ); (bool success, ) = msg.sender.call{value: _rewards}(""); require(success, "refund failed"); rewardStatus[_rewardId] = true; emit Claim(_rewardId, _rewards); } function emergencyWithdraw() external nonReentrant { require(owner == msg.sender, "not owner"); _transferETH(address(this).balance); } function _transferETH(uint256 _amount) internal { (bool success, ) = msg.sender.call{value: _amount}(""); require(success, "refund failed"); } receive() external payable {} }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (security/ReentrancyGuard.sol) pragma solidity ^0.8.0; /** * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. */ abstract contract ReentrancyGuard { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; constructor() { _status = _NOT_ENTERED; } /** * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and making it call a * `private` function that does the actual work. */ modifier nonReentrant() { _nonReentrantBefore(); _; _nonReentrantAfter(); } function _nonReentrantBefore() private { // On the first call to nonReentrant, _status will be _NOT_ENTERED require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; } function _nonReentrantAfter() private { // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (utils/cryptography/MerkleProof.sol) pragma solidity ^0.8.0; /** * @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 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} * * _Available since v4.7._ */ 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. * * _Available since v4.4._ */ 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} * * _Available since v4.7._ */ 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. * * _Available since v4.7._ */ 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. * * _Available since v4.7._ */ 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). * * _Available since v4.7._ */ function processMultiProof( bytes32[] memory proof, bool[] memory proofFlags, bytes32[] memory leaves ) internal pure returns (bytes32 merkleRoot) { // This function rebuild 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 totalHashes = proofFlags.length; // Check proof validity. require(leavesLen + proof.length - 1 == totalHashes, "MerkleProof: invalid multiproof"); // 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 for 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) { 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. * * _Available since v4.7._ */ function processMultiProofCalldata( bytes32[] calldata proof, bool[] calldata proofFlags, bytes32[] memory leaves ) internal pure returns (bytes32 merkleRoot) { // This function rebuild 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 totalHashes = proofFlags.length; // Check proof validity. require(leavesLen + proof.length - 1 == totalHashes, "MerkleProof: invalid multiproof"); // 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 for 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) { return hashes[totalHashes - 1]; } else if (leavesLen > 0) { return leaves[0]; } else { return proof[0]; } } function _hashPair(bytes32 a, bytes32 b) private pure returns (bytes32) { return a < b ? _efficientHash(a, b) : _efficientHash(b, a); } 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 v4.8.0) (utils/math/Math.sol) pragma solidity ^0.8.0; /** * @dev Standard math utilities missing in the Solidity language. */ library Math { enum Rounding { Down, // Toward negative infinity Up, // Toward infinity Zero // Toward zero } /** * @dev Returns the largest of two numbers. */ function max(uint256 a, uint256 b) internal pure returns (uint256) { return a > b ? a : b; } /** * @dev Returns the smallest of two numbers. */ function min(uint256 a, uint256 b) internal pure returns (uint256) { return a < b ? a : b; } /** * @dev Returns the average of two numbers. The result is rounded towards * zero. */ function average(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b) / 2 can overflow. return (a & b) + (a ^ b) / 2; } /** * @dev Returns the ceiling of the division of two numbers. * * This differs from standard division with `/` in that it rounds up instead * of rounding down. */ function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b - 1) / b can overflow on addition, so we distribute. return a == 0 ? 0 : (a - 1) / b + 1; } /** * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0 * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv) * with further edits by Uniswap Labs also under MIT license. */ function mulDiv( uint256 x, uint256 y, uint256 denominator ) internal pure returns (uint256 result) { unchecked { // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256 // variables such that product = prod1 * 2^256 + prod0. uint256 prod0; // Least significant 256 bits of the product uint256 prod1; // Most significant 256 bits of the product assembly { let mm := mulmod(x, y, not(0)) prod0 := mul(x, y) prod1 := sub(sub(mm, prod0), lt(mm, prod0)) } // Handle non-overflow cases, 256 by 256 division. if (prod1 == 0) { return prod0 / denominator; } // Make sure the result is less than 2^256. Also prevents denominator == 0. require(denominator > prod1); /////////////////////////////////////////////// // 512 by 256 division. /////////////////////////////////////////////// // Make division exact by subtracting the remainder from [prod1 prod0]. uint256 remainder; assembly { // Compute remainder using mulmod. remainder := mulmod(x, y, denominator) // Subtract 256 bit number from 512 bit number. prod1 := sub(prod1, gt(remainder, prod0)) prod0 := sub(prod0, remainder) } // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1. // See https://cs.stackexchange.com/q/138556/92363. // Does not overflow because the denominator cannot be zero at this stage in the function. uint256 twos = denominator & (~denominator + 1); assembly { // Divide denominator by twos. denominator := div(denominator, twos) // Divide [prod1 prod0] by twos. prod0 := div(prod0, twos) // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one. twos := add(div(sub(0, twos), twos), 1) } // Shift in bits from prod1 into prod0. prod0 |= prod1 * twos; // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for // four bits. That is, denominator * inv = 1 mod 2^4. uint256 inverse = (3 * denominator) ^ 2; // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works // in modular arithmetic, doubling the correct bits in each step. inverse *= 2 - denominator * inverse; // inverse mod 2^8 inverse *= 2 - denominator * inverse; // inverse mod 2^16 inverse *= 2 - denominator * inverse; // inverse mod 2^32 inverse *= 2 - denominator * inverse; // inverse mod 2^64 inverse *= 2 - denominator * inverse; // inverse mod 2^128 inverse *= 2 - denominator * inverse; // inverse mod 2^256 // Because the division is now exact we can divide by multiplying with the modular inverse of denominator. // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1 // is no longer required. result = prod0 * inverse; return result; } } /** * @notice Calculates x * y / denominator with full precision, following the selected rounding direction. */ function mulDiv( uint256 x, uint256 y, uint256 denominator, Rounding rounding ) internal pure returns (uint256) { uint256 result = mulDiv(x, y, denominator); if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) { result += 1; } return result; } /** * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down. * * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11). */ function sqrt(uint256 a) internal pure returns (uint256) { if (a == 0) { return 0; } // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target. // // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`. // // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)` // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))` // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)` // // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit. uint256 result = 1 << (log2(a) >> 1); // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128, // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision // into the expected uint128 result. unchecked { result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; return min(result, a / result); } } /** * @notice Calculates sqrt(a), following the selected rounding direction. */ function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = sqrt(a); return result + (rounding == Rounding.Up && result * result < a ? 1 : 0); } } /** * @dev Return the log in base 2, rounded down, of a positive value. * Returns 0 if given 0. */ function log2(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >> 128 > 0) { value >>= 128; result += 128; } if (value >> 64 > 0) { value >>= 64; result += 64; } if (value >> 32 > 0) { value >>= 32; result += 32; } if (value >> 16 > 0) { value >>= 16; result += 16; } if (value >> 8 > 0) { value >>= 8; result += 8; } if (value >> 4 > 0) { value >>= 4; result += 4; } if (value >> 2 > 0) { value >>= 2; result += 2; } if (value >> 1 > 0) { result += 1; } } return result; } /** * @dev Return the log in base 2, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log2(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log2(value); return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0); } } /** * @dev Return the log in base 10, rounded down, of a positive value. * Returns 0 if given 0. */ function log10(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >= 10**64) { value /= 10**64; result += 64; } if (value >= 10**32) { value /= 10**32; result += 32; } if (value >= 10**16) { value /= 10**16; result += 16; } if (value >= 10**8) { value /= 10**8; result += 8; } if (value >= 10**4) { value /= 10**4; result += 4; } if (value >= 10**2) { value /= 10**2; result += 2; } if (value >= 10**1) { result += 1; } } return result; } /** * @dev Return the log in base 10, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log10(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log10(value); return result + (rounding == Rounding.Up && 10**result < value ? 1 : 0); } } /** * @dev Return the log in base 256, rounded down, of a positive value. * Returns 0 if given 0. * * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string. */ function log256(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >> 128 > 0) { value >>= 128; result += 16; } if (value >> 64 > 0) { value >>= 64; result += 8; } if (value >> 32 > 0) { value >>= 32; result += 4; } if (value >> 16 > 0) { value >>= 16; result += 2; } if (value >> 8 > 0) { result += 1; } } return result; } /** * @dev Return the log in base 10, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log256(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log256(value); return result + (rounding == Rounding.Up && 1 << (result * 8) < value ? 1 : 0); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (utils/Strings.sol) pragma solidity ^0.8.0; import "./math/Math.sol"; /** * @dev String operations. */ library Strings { bytes16 private constant _SYMBOLS = "0123456789abcdef"; uint8 private constant _ADDRESS_LENGTH = 20; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { unchecked { uint256 length = Math.log10(value) + 1; string memory buffer = new string(length); uint256 ptr; /// @solidity memory-safe-assembly assembly { ptr := add(buffer, add(32, length)) } while (true) { ptr--; /// @solidity memory-safe-assembly assembly { mstore8(ptr, byte(mod(value, 10), _SYMBOLS)) } value /= 10; if (value == 0) break; } return buffer; } } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { unchecked { return toHexString(value, Math.log256(value) + 1); } } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } /** * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation. */ function toHexString(address addr) internal pure returns (string memory) { return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH); } }
{ "optimizer": { "enabled": true, "runs": 200 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "libraries": {} }
Contract Security Audit
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[{"inputs":[{"internalType":"address","name":"_admin","type":"address"},{"internalType":"address","name":"_owner","type":"address"},{"internalType":"bytes32","name":"_root","type":"bytes32"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"_rewardId","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"_rewards","type":"uint256"}],"name":"Claim","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"oldOwner","type":"address"},{"indexed":false,"internalType":"address","name":"newOwner","type":"address"}],"name":"UpdateAdmin","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"oldOwner","type":"address"},{"indexed":false,"internalType":"address","name":"newOwner","type":"address"}],"name":"UpdateOwner","type":"event"},{"inputs":[{"internalType":"uint256","name":"_rewardId","type":"uint256"},{"internalType":"bytes32[]","name":"_merkleProof","type":"bytes32[]"},{"internalType":"uint256","name":"_rewards","type":"uint256"}],"name":"claimRewards","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"emergencyWithdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"root","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_admin","type":"address"}],"name":"setAdmin","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_owner","type":"address"}],"name":"setOwner","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_root","type":"bytes32"}],"name":"setRoot","outputs":[],"stateMutability":"nonpayable","type":"function"},{"stateMutability":"payable","type":"receive"}]
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)
00000000000000000000000052adcb180a3e983605ce82fb9c5377e439819aa100000000000000000000000052adcb180a3e983605ce82fb9c5377e439819aa1b8852fd2b3146e7c8a754dd198c7b53e65449d0230499752aa9603ab8cafec63
-----Decoded View---------------
Arg [0] : _admin (address): 0x52AdcB180a3E983605ce82fb9C5377e439819aA1
Arg [1] : _owner (address): 0x52AdcB180a3E983605ce82fb9C5377e439819aA1
Arg [2] : _root (bytes32): 0xb8852fd2b3146e7c8a754dd198c7b53e65449d0230499752aa9603ab8cafec63
-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 00000000000000000000000052adcb180a3e983605ce82fb9c5377e439819aa1
Arg [1] : 00000000000000000000000052adcb180a3e983605ce82fb9c5377e439819aa1
Arg [2] : b8852fd2b3146e7c8a754dd198c7b53e65449d0230499752aa9603ab8cafec63
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Multichain Portfolio | 26 Chains
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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.