Overview
S Balance
1.6 S
S Value
$0.67 (@ $0.42/S)More Info
Private Name Tags
ContractCreator
Latest 24 from a total of 24 transactions
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_entropy Callbac... | 5700318 | 12 days ago | IN | 0 S | 0.04627115 | ||||
Perform Upkeep | 5700306 | 12 days ago | IN | 0.000015 S | 0.0055175 | ||||
Set Upkeep Calle... | 5667917 | 13 days ago | IN | 0 S | 0.00167868 | ||||
Enter Space Swee... | 5667648 | 13 days ago | IN | 0.136 S | 0.00658735 | ||||
Enter Space Swee... | 5667639 | 13 days ago | IN | 0.136 S | 0.00658735 | ||||
Enter Space Swee... | 5667632 | 13 days ago | IN | 0.136 S | 0.00658735 | ||||
Enter Space Swee... | 5667625 | 13 days ago | IN | 0.136 S | 0.00658735 | ||||
Enter Space Swee... | 5667619 | 13 days ago | IN | 0.136 S | 0.00658735 | ||||
Enter Space Swee... | 5667614 | 13 days ago | IN | 0.136 S | 0.00658735 | ||||
Enter Space Swee... | 5667606 | 13 days ago | IN | 0.136 S | 0.00658735 | ||||
Enter Space Swee... | 5667600 | 13 days ago | IN | 0.136 S | 0.00658735 | ||||
Enter Space Swee... | 5667592 | 13 days ago | IN | 0.136 S | 0.00658735 | ||||
Enter Space Swee... | 5667583 | 13 days ago | IN | 0.136 S | 0.00658735 | ||||
Enter Space Swee... | 5667576 | 13 days ago | IN | 0.136 S | 0.00658735 | ||||
Enter Space Swee... | 5667568 | 13 days ago | IN | 0.136 S | 0.00658735 | ||||
Enter Space Swee... | 5667562 | 13 days ago | IN | 0.136 S | 0.00658735 | ||||
Enter Space Swee... | 5667555 | 13 days ago | IN | 0.136 S | 0.00658735 | ||||
Enter Space Swee... | 5667544 | 13 days ago | IN | 0.136 S | 0.00658735 | ||||
Enter Space Swee... | 5667533 | 13 days ago | IN | 0.136 S | 0.00658735 | ||||
Enter Space Swee... | 5667522 | 13 days ago | IN | 0.136 S | 0.00658735 | ||||
Enter Space Swee... | 5667510 | 13 days ago | IN | 0.136 S | 0.00658735 | ||||
Enter Space Swee... | 5667500 | 13 days ago | IN | 0.136 S | 0.00658735 | ||||
Enter Space Swee... | 5667489 | 13 days ago | IN | 0.136 S | 0.01000735 | ||||
Set Entrance Fee | 5667481 | 13 days ago | IN | 0 S | 0.00166311 |
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Contract Name:
SpaceSweepDay
Compiler Version
v0.8.16+commit.07a7930e
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
//SPDX-License-Identifier: MIT pragma solidity ^0.8.16; import "@openzeppelin/contracts/access/Ownable.sol"; import "@openzeppelin/contracts/security/ReentrancyGuard.sol"; import "@pythnetwork/entropy-sdk-solidity/IEntropy.sol"; import "@pythnetwork/entropy-sdk-solidity/IEntropyConsumer.sol"; import { SafeERC20, IERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; error SpaceSweepDay__NotEnoughSToken(); error SpaceSweepDay__TransferFailed(); error SpaceSweepDay__NotOpen(); error SpaceSweepDay__UpkeepNotNeeded( uint256 currentBalance, uint256 numPlayers, uint256 SpaceSweepDayState ); contract SpaceSweepDay is Ownable, ReentrancyGuard { // contract SpaceSweepDay is IEntropyConsumer, Ownable, ReentrancyGuard { // Entropy IEntropy entropy; address entropyProvider; /* state variables */ uint256 public i_entranceFee; address payable[] public s_players; uint256[] public playerContributions; address payable public treasuryWallet; address[] public specialWallets; uint256 public treasuryFund; address payable[] public s_recentWinners; uint256 public totalWinnings; mapping(address => uint256) public winnings; mapping(address => uint256) contributions; uint256 public currentPool = 0; mapping(uint256 => mapping(address => bool)) public roundWinners; uint256 public currentRound = 1; address public caller; bool public feeEnabled = true; /** Lottey Variables */ enum SpaceSweepDayState { OPEN, CALCULATING } SpaceSweepDayState private s_SpaceSweepDayState; /* events */ event SpaceSweepDayEnterRequest(uint64 sequenceNumber); event RequestedSpaceSweepWinner(uint256 indexed requestId); event SpaceSweepDayEnterResult(uint64 sequenceNumber); event SpaceSweepDayEnter(address indexed player, uint256 allo); event WinnerPicked( address indexed winner, uint256 prize, uint256 position, uint256 p_length ); event TreasuryChanged(address indexed newTreasury); // Events for tracking refund status event RefundIssued(address to, uint256 amount); event RefundFailed(address to, uint256 amount); constructor( uint256 entranceFee, address payable _treasuryWallet, address _entropy, address _entropyProvider, address _caller ) { i_entranceFee = entranceFee; s_SpaceSweepDayState = SpaceSweepDayState.OPEN; treasuryWallet = _treasuryWallet; entropy = IEntropy(_entropy); entropyProvider = _entropyProvider; caller = _caller; } modifier onlyCaller() { require( msg.sender == caller || msg.sender == owner(), "Only the caller or owner can call this function" ); _; } function setUpkeepCaller(address _newCaller) external onlyOwner { require(_newCaller != address(0), "New caller cannot be zero address"); caller = _newCaller; } // This method is required by the IEntropyConsumer interface // function getEntropy() internal view override returns (address) { // return address(entropy); // } function getFlipFee() public view returns (uint256 fee) { fee = entropy.getFee(entropyProvider); } function toggleFee(bool _enabled) public onlyOwner { feeEnabled = _enabled; } function enterSpaceSweepDaySpecial() public payable { require( s_SpaceSweepDayState == SpaceSweepDayState.OPEN, "SpaceSweepDay__NotOpen" ); // Initialize a flag to check if the sender is a special wallet bool isSpecialWallet = false; // Search for the sender's address in the specialWallets array for (uint256 i = 0; i < specialWallets.length; i++) { if (msg.sender == specialWallets[i]) { isSpecialWallet = true; specialWallets[i] = specialWallets[specialWallets.length - 1]; specialWallets.pop(); break; } } // Require that the sender must be a special wallet require(isSpecialWallet, "SpaceSweepDay__NotSpecialWallet"); s_players.push(payable(msg.sender)); playerContributions.push(msg.value); contributions[msg.sender] += msg.value; emit SpaceSweepDayEnter(msg.sender, contributions[msg.sender]); } function enterSpaceSweepDay(uint256 entries) public payable { require( s_SpaceSweepDayState == SpaceSweepDayState.OPEN, "SpaceSweepDay__NotOpen" ); uint256 flipFee = feeEnabled ? entropy.getFee(entropyProvider) : 0; treasuryFund += flipFee; uint256 totalEntryFee = i_entranceFee * entries; require(msg.value >= totalEntryFee, "SpaceSweepDay__NotEnoughSToken"); contributions[msg.sender] += msg.value - flipFee; currentPool += msg.value - flipFee; // Track each entry separately for (uint256 i = 0; i < entries; i++) { playerContributions.push(i_entranceFee); s_players.push(payable(msg.sender)); } emit SpaceSweepDayEnter(msg.sender, contributions[msg.sender]); } function performUpkeep(bytes32 userRandomNumber) external payable onlyCaller { bool isOpen = SpaceSweepDayState.OPEN == s_SpaceSweepDayState; bool hasBalance = currentPool > 0; bool hasPlayers = s_players.length >= 10; bool upKeepNeeded = (isOpen && hasBalance && hasPlayers); if (!upKeepNeeded) { revert SpaceSweepDay__UpkeepNotNeeded( currentPool, s_players.length, uint256(s_SpaceSweepDayState) ); } s_SpaceSweepDayState = SpaceSweepDayState.CALCULATING; uint256 fee = entropy.getFee(entropyProvider); uint64 sequenceNumber = entropy.requestWithCallback{ value: fee }( entropyProvider, userRandomNumber ); emit RequestedSpaceSweepWinner(sequenceNumber); emit SpaceSweepDayEnterRequest(sequenceNumber); } function _entropyCallback( uint64 sequenceNumber, address _entropyProvider, bytes32 randomNumber ) external onlyCaller { entropyProvider = _entropyProvider; delete s_recentWinners; uint256 totalPool = currentPool; uint256 treasuryAmount = (totalPool * 20) / 100; treasuryFund += treasuryAmount; uint256 availablePool = totalPool - ((totalPool * 20) / 100); uint256[10] memory prizePercentages = [ uint256(35), uint256(20), uint256(15), uint256(10), uint256(5), uint256(4), uint256(4), uint256(3), uint256(2), uint256(2) ]; // Convert randomNumber to uint256 for more entropy uint256 randomValue = uint256(randomNumber); uint256 counter = 0; uint256 nonce = 0; for (uint256 i = 0; i < prizePercentages.length && counter < s_players.length; ) { // Use keccak256 to get a new random value for each iteration bytes32 randomHash = keccak256(abi.encodePacked(randomValue, nonce, i)); // Use full 256 bits of entropy for index calculation uint256 index = uint256(randomHash) % s_players.length; address payable winner = s_players[index]; if (!roundWinners[currentRound][winner]) { uint256 prize = (availablePool * prizePercentages[i]) / 100; winnings[winner] += prize; totalWinnings += prize; roundWinners[currentRound][winner] = true; s_recentWinners.push(winner); emit WinnerPicked(winner, prize, i + 1, s_players.length); emit SpaceSweepDayEnterResult(sequenceNumber); i++; counter = 0; } else { counter++; nonce++; // Increment nonce for new random hash } } (bool successTreasury, ) = treasuryWallet.call{ value: treasuryFund }(""); require(successTreasury, "Transfer failed."); treasuryFund = 0; // Reset for next SpaceSweepDay s_SpaceSweepDayState = SpaceSweepDayState.OPEN; currentPool = 0; for (uint256 i = 0; i < s_players.length; i++) { contributions[s_players[i]] = 0; } delete s_players; delete playerContributions; currentRound++; } function claimWinnings() external nonReentrant { uint256 winningAmount = winnings[msg.sender]; require(winningAmount > 0, "No winnings to claim"); winnings[msg.sender] = 0; totalWinnings -= winningAmount; // Transfer winnings (bool success, ) = msg.sender.call{ value: winningAmount }(""); require(success, "Failed to send winnings to user wallet"); } function getAllRecentWinnersWinnings() public view returns (address[] memory, uint256[] memory) { uint256 winnersCount = s_recentWinners.length; address[] memory winnerAddresses = new address[](winnersCount); uint256[] memory winnerWinnings = new uint256[](winnersCount); for (uint256 i = 0; i < winnersCount; i++) { winnerAddresses[i] = s_recentWinners[i]; winnerWinnings[i] = winnings[s_recentWinners[i]]; } return (winnerAddresses, winnerWinnings); } function getContractBalance() public view returns (uint256) { return address(this).balance; } function addToPool() external payable { require(msg.value > 0, "Must send S to add to the pool"); currentPool += msg.value; } function getSpaceSweepDayState() public view returns (SpaceSweepDayState) { return s_SpaceSweepDayState; } function getSpecialWallets() public view returns (address[] memory) { return specialWallets; } function getEntranceFee() public view returns (uint256) { return i_entranceFee; } function getPlayer(uint256 index) public view returns (address) { return s_players[index]; } function getAllPlayers() public view returns (address payable[] memory) { return s_players; } function getAllContributions() public view returns (uint256[] memory) { return playerContributions; } function getCurrentPool() public view returns (uint256) { return currentPool; } function getNumberOfPlayers() public view returns (uint256) { return s_players.length; } function addSpecialWallets(address[] calldata _wallets) external onlyOwner { for (uint i = 0; i < _wallets.length; i++) { specialWallets.push(_wallets[i]); } } function getTotalWinnings() public view returns (uint256) { return totalWinnings; } function removeSpecialWallet(address _wallet) external onlyOwner { for (uint256 i = 0; i < specialWallets.length; i++) { if (specialWallets[i] == _wallet) { specialWallets[i] = specialWallets[specialWallets.length - 1]; specialWallets.pop(); break; } } } // Function to update the entrance fee function setEntranceFee(uint256 _newEntranceFee) external onlyOwner { i_entranceFee = _newEntranceFee; } function setTreasury(address payable _newTreasury) public onlyOwner { require(_newTreasury != address(0), "New treasury cannot be the zero address"); treasuryWallet = _newTreasury; emit TreasuryChanged(_newTreasury); } function transferTreasuryFunds() public onlyOwner { require(treasuryFund > 0, "No treasury to transfer"); uint256 amountToTransfer = treasuryFund; treasuryFund = 0; // Reset remains before transfer to prevent re-entrancy attack (bool success, ) = treasuryWallet.call{ value: amountToTransfer }(""); require(success, "Transfer failed"); } function refundAllParticipants() external onlyOwner nonReentrant { uint256 playerCount = s_players.length; for (uint256 i = 0; i < playerCount; i++) { address payable player = s_players[i]; // Attempt to refund each player individually (bool success, ) = player.call{ value: i_entranceFee }(""); if (success) { emit RefundIssued(player, i_entranceFee); } else { emit RefundFailed(player, i_entranceFee); } } s_SpaceSweepDayState = SpaceSweepDayState.OPEN; delete s_players; currentPool = 0; delete playerContributions; } function transferDeadFunds() public onlyOwner { uint256 calculatedFunds = address(this).balance - (totalWinnings + currentPool); require(calculatedFunds > 0, "No dead funds available for transfer"); (bool success, ) = treasuryWallet.call{ value: calculatedFunds }(""); require(success, "Transfer failed"); } receive() external payable {} }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol) pragma solidity ^0.8.0; import "../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. * * 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 Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor() { _transferOwnership(_msgSender()); } /** * @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 { require(owner() == _msgSender(), "Ownable: caller is not the owner"); } /** * @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 { require(newOwner != address(0), "Ownable: new owner is the zero address"); _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 v4.9.0) (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; } /** * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a * `nonReentrant` function in the call stack. */ function _reentrancyGuardEntered() internal view returns (bool) { return _status == _ENTERED; } }
// 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. */ interface IERC20Permit { /** * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens, * given ``owner``'s signed approval. * * IMPORTANT: The same issues {IERC20-approve} has related to transaction * ordering also apply here. * * Emits an {Approval} event. * * Requirements: * * - `spender` cannot be the zero address. * - `deadline` must be a timestamp in the future. * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner` * over the EIP712-formatted function arguments. * - the signature must use ``owner``'s current nonce (see {nonces}). * * For more information on the signature format, see the * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP * section]. * * CAUTION: See Security Considerations above. */ function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external; /** * @dev Returns the current nonce for `owner`. This value must be * included whenever a signature is generated for {permit}. * * Every successful call to {permit} increases ``owner``'s nonce by one. This * prevents a signature from being used multiple times. */ function nonces(address owner) external view returns (uint256); /** * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}. */ // solhint-disable-next-line func-name-mixedcase function DOMAIN_SEPARATOR() external view returns (bytes32); }
// 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); /** * @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 `amount` 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 amount) external returns (bool); /** * @dev Moves `amount` tokens from `from` to `to` using the * allowance mechanism. `amount` 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 amount) external returns (bool); }
// 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. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. */ function safeApprove(IERC20 token, address spender, uint256 value) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' require( (value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } /** * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value, * non-reverting calls are assumed to be successful. */ function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 oldAllowance = token.allowance(address(this), spender); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance + value)); } /** * @dev Decrease the calling contract's allowance toward `spender` by `value`. If `token` returns no value, * non-reverting calls are assumed to be successful. */ function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { unchecked { uint256 oldAllowance = token.allowance(address(this), spender); require(oldAllowance >= value, "SafeERC20: decreased allowance below zero"); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance - value)); } } /** * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value, * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval * to be set to zero before setting it to a non-zero value, such as USDT. */ function forceApprove(IERC20 token, address spender, uint256 value) internal { bytes memory approvalCall = abi.encodeWithSelector(token.approve.selector, spender, value); if (!_callOptionalReturnBool(token, approvalCall)) { _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, 0)); _callOptionalReturn(token, approvalCall); } } /** * @dev Use a ERC-2612 signature to set the `owner` approval toward `spender` on `token`. * Revert on invalid signature. */ function safePermit( IERC20Permit token, address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) internal { uint256 nonceBefore = token.nonces(owner); token.permit(owner, spender, value, deadline, v, r, s); uint256 nonceAfter = token.nonces(owner); require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed"); } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). */ function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); require(returndata.length == 0 || abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). * * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead. */ function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We cannot use {Address-functionCall} here since this should return false // and not revert is the subcall reverts. (bool success, bytes memory returndata) = address(token).call(data); return success && (returndata.length == 0 || abi.decode(returndata, (bool))) && Address.isContract(address(token)); } }
// 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 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResultFromTarget(target, success, returndata, errorMessage); } /** * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract. * * _Available since v4.8._ */ function verifyCallResultFromTarget( address target, bool success, bytes memory returndata, string memory errorMessage ) internal view returns (bytes memory) { if (success) { if (returndata.length == 0) { // only check isContract if the call was successful and the return data is empty // otherwise we already know that it was a contract require(isContract(target), "Address: call to non-contract"); } return returndata; } else { _revert(returndata, errorMessage); } } /** * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason or using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { _revert(returndata, errorMessage); } } function _revert(bytes memory returndata, string memory errorMessage) private pure { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly /// @solidity memory-safe-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.4) (utils/Context.sol) pragma solidity ^0.8.0; /** * @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: Apache-2.0 pragma solidity ^0.8.0; import "./EntropyStructs.sol"; interface EntropyEvents { event Registered(EntropyStructs.ProviderInfo provider); event Requested(EntropyStructs.Request request); event RequestedWithCallback( address indexed provider, address indexed requestor, uint64 indexed sequenceNumber, bytes32 userRandomNumber, EntropyStructs.Request request ); event Revealed( EntropyStructs.Request request, bytes32 userRevelation, bytes32 providerRevelation, bytes32 blockHash, bytes32 randomNumber ); event RevealedWithCallback( EntropyStructs.Request request, bytes32 userRandomNumber, bytes32 providerRevelation, bytes32 randomNumber ); event ProviderFeeUpdated(address provider, uint128 oldFee, uint128 newFee); event ProviderUriUpdated(address provider, bytes oldUri, bytes newUri); event ProviderFeeManagerUpdated( address provider, address oldFeeManager, address newFeeManager ); event Withdrawal( address provider, address recipient, uint128 withdrawnAmount ); }
// SPDX-License-Identifier: Apache 2 pragma solidity ^0.8.0; contract EntropyStructs { struct ProviderInfo { uint128 feeInWei; uint128 accruedFeesInWei; // The commitment that the provider posted to the blockchain, and the sequence number // where they committed to this. This value is not advanced after the provider commits, // and instead is stored to help providers track where they are in the hash chain. bytes32 originalCommitment; uint64 originalCommitmentSequenceNumber; // Metadata for the current commitment. Providers may optionally use this field to help // manage rotations (i.e., to pick the sequence number from the correct hash chain). bytes commitmentMetadata; // Optional URI where clients can retrieve revelations for the provider. // Client SDKs can use this field to automatically determine how to retrieve random values for each provider. // TODO: specify the API that must be implemented at this URI bytes uri; // The first sequence number that is *not* included in the current commitment (i.e., an exclusive end index). // The contract maintains the invariant that sequenceNumber <= endSequenceNumber. // If sequenceNumber == endSequenceNumber, the provider must rotate their commitment to add additional random values. uint64 endSequenceNumber; // The sequence number that will be assigned to the next inbound user request. uint64 sequenceNumber; // The current commitment represents an index/value in the provider's hash chain. // These values are used to verify requests for future sequence numbers. Note that // currentCommitmentSequenceNumber < sequenceNumber. // // The currentCommitment advances forward through the provider's hash chain as values // are revealed on-chain. bytes32 currentCommitment; uint64 currentCommitmentSequenceNumber; // An address that is authorized to set / withdraw fees on behalf of this provider. address feeManager; } struct Request { // Storage slot 1 // address provider; uint64 sequenceNumber; // The number of hashes required to verify the provider revelation. uint32 numHashes; // Storage slot 2 // // The commitment is keccak256(userCommitment, providerCommitment). Storing the hash instead of both saves 20k gas by // eliminating 1 store. bytes32 commitment; // Storage slot 3 // // The number of the block where this request was created. // Note that we're using a uint64 such that we have an additional space for an address and other fields in // this storage slot. Although block.number returns a uint256, 64 bits should be plenty to index all of the // blocks ever generated. uint64 blockNumber; // The address that requested this random number. address requester; // If true, incorporate the blockhash of blockNumber into the generated random value. bool useBlockhash; // If true, the requester will be called back with the generated random value. bool isRequestWithCallback; // There are 2 remaining bytes of free space in this slot. } }
// SPDX-License-Identifier: Apache 2 pragma solidity ^0.8.0; import "./EntropyEvents.sol"; interface IEntropy is EntropyEvents { // Register msg.sender as a randomness provider. The arguments are the provider's configuration parameters // and initial commitment. Re-registering the same provider rotates the provider's commitment (and updates // the feeInWei). // // chainLength is the number of values in the hash chain *including* the commitment, that is, chainLength >= 1. function register( uint128 feeInWei, bytes32 commitment, bytes calldata commitmentMetadata, uint64 chainLength, bytes calldata uri ) external; // Withdraw a portion of the accumulated fees for the provider msg.sender. // Calling this function will transfer `amount` wei to the caller (provided that they have accrued a sufficient // balance of fees in the contract). function withdraw(uint128 amount) external; // Withdraw a portion of the accumulated fees for provider. The msg.sender must be the fee manager for this provider. // Calling this function will transfer `amount` wei to the caller (provided that they have accrued a sufficient // balance of fees in the contract). function withdrawAsFeeManager(address provider, uint128 amount) external; // As a user, request a random number from `provider`. Prior to calling this method, the user should // generate a random number x and keep it secret. The user should then compute hash(x) and pass that // as the userCommitment argument. (You may call the constructUserCommitment method to compute the hash.) // // This method returns a sequence number. The user should pass this sequence number to // their chosen provider (the exact method for doing so will depend on the provider) to retrieve the provider's // number. The user should then call fulfillRequest to construct the final random number. // // This method will revert unless the caller provides a sufficient fee (at least getFee(provider)) as msg.value. // Note that excess value is *not* refunded to the caller. function request( address provider, bytes32 userCommitment, bool useBlockHash ) external payable returns (uint64 assignedSequenceNumber); // Request a random number. The method expects the provider address and a secret random number // in the arguments. It returns a sequence number. // // The address calling this function should be a contract that inherits from the IEntropyConsumer interface. // The `entropyCallback` method on that interface will receive a callback with the generated random number. // // This method will revert unless the caller provides a sufficient fee (at least getFee(provider)) as msg.value. // Note that excess value is *not* refunded to the caller. function requestWithCallback( address provider, bytes32 userRandomNumber ) external payable returns (uint64 assignedSequenceNumber); // Fulfill a request for a random number. This method validates the provided userRandomness and provider's proof // against the corresponding commitments in the in-flight request. If both values are validated, this function returns // the corresponding random number. // // Note that this function can only be called once per in-flight request. Calling this function deletes the stored // request information (so that the contract doesn't use a linear amount of storage in the number of requests). // If you need to use the returned random number more than once, you are responsible for storing it. function reveal( address provider, uint64 sequenceNumber, bytes32 userRevelation, bytes32 providerRevelation ) external returns (bytes32 randomNumber); // Fulfill a request for a random number. This method validates the provided userRandomness // and provider's revelation against the corresponding commitment in the in-flight request. If both values are validated // and the requestor address is a contract address, this function calls the requester's entropyCallback method with the // sequence number, provider address and the random number as arguments. Else if the requestor is an EOA, it won't call it. // // Note that this function can only be called once per in-flight request. Calling this function deletes the stored // request information (so that the contract doesn't use a linear amount of storage in the number of requests). // If you need to use the returned random number more than once, you are responsible for storing it. // // Anyone can call this method to fulfill a request, but the callback will only be made to the original requester. function revealWithCallback( address provider, uint64 sequenceNumber, bytes32 userRandomNumber, bytes32 providerRevelation ) external; function getProviderInfo( address provider ) external view returns (EntropyStructs.ProviderInfo memory info); function getDefaultProvider() external view returns (address provider); function getRequest( address provider, uint64 sequenceNumber ) external view returns (EntropyStructs.Request memory req); function getFee(address provider) external view returns (uint128 feeAmount); function getAccruedPythFees() external view returns (uint128 accruedPythFeesInWei); function setProviderFee(uint128 newFeeInWei) external; function setProviderFeeAsFeeManager( address provider, uint128 newFeeInWei ) external; function setProviderUri(bytes calldata newUri) external; // Set manager as the fee manager for the provider msg.sender. // After calling this function, manager will be able to set the provider's fees and withdraw them. // Only one address can be the fee manager for a provider at a time -- calling this function again with a new value // will override the previous value. Call this function with the all-zero address to disable the fee manager role. function setFeeManager(address manager) external; function constructUserCommitment( bytes32 userRandomness ) external pure returns (bytes32 userCommitment); function combineRandomValues( bytes32 userRandomness, bytes32 providerRandomness, bytes32 blockHash ) external pure returns (bytes32 combinedRandomness); }
// SPDX-License-Identifier: Apache 2 pragma solidity ^0.8.0; abstract contract IEntropyConsumer { // This method is called by Entropy to provide the random number to the consumer. // It asserts that the msg.sender is the Entropy contract. It is not meant to be // override by the consumer. function _entropyCallback( uint64 sequence, address provider, bytes32 randomNumber ) external { address entropy = getEntropy(); require(entropy != address(0), "Entropy address not set"); require(msg.sender == entropy, "Only Entropy can call this function"); entropyCallback(sequence, provider, randomNumber); } // getEntropy returns Entropy contract address. The method is being used to check that the // callback is indeed from Entropy contract. The consumer is expected to implement this method. // Entropy address can be found here - https://docs.pyth.network/entropy/contract-addresses function getEntropy() internal view virtual returns (address); // This method is expected to be implemented by the consumer to handle the random number. // It will be called by _entropyCallback after _entropyCallback ensures that the call is // indeed from Entropy contract. function entropyCallback( uint64 sequence, address provider, bytes32 randomNumber ) internal virtual; }
{ "optimizer": { "enabled": true, "runs": 200 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "metadata": { "useLiteralContent": true }, "libraries": {} }
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payable","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"s_recentWinners","outputs":[{"internalType":"address payable","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_newEntranceFee","type":"uint256"}],"name":"setEntranceFee","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address payable","name":"_newTreasury","type":"address"}],"name":"setTreasury","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_newCaller","type":"address"}],"name":"setUpkeepCaller","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"specialWallets","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bool","name":"_enabled","type":"bool"}],"name":"toggleFee","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"totalWinnings","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"transferDeadFunds","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"transferTreasuryFunds","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"treasuryFund","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"treasuryWallet","outputs":[{"internalType":"address payable","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"winnings","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"stateMutability":"payable","type":"receive"}]
Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
0000000000000000000000000000000000000000000000000de0b6b3a76400000000000000000000000000007c817d793715baaee120624e6ce499b29aa105ac00000000000000000000000036825bf3fbdf5a29e2d5148bfe7dcf7b5639e32000000000000000000000000052deaa1c84233f7bb8c8a45baede41091c6165060000000000000000000000005df4707980440d7beb2ad83dfa0321889fb27aed
-----Decoded View---------------
Arg [0] : entranceFee (uint256): 1000000000000000000
Arg [1] : _treasuryWallet (address): 0x7c817d793715baAEe120624E6cE499B29aa105ac
Arg [2] : _entropy (address): 0x36825bf3Fbdf5a29E2d5148bfe7Dcf7B5639e320
Arg [3] : _entropyProvider (address): 0x52DeaA1c84233F7bb8C8A45baeDE41091c616506
Arg [4] : _caller (address): 0x5DF4707980440D7BEB2AD83dfA0321889FB27AeD
-----Encoded View---------------
5 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000de0b6b3a7640000
Arg [1] : 0000000000000000000000007c817d793715baaee120624e6ce499b29aa105ac
Arg [2] : 00000000000000000000000036825bf3fbdf5a29e2d5148bfe7dcf7b5639e320
Arg [3] : 00000000000000000000000052deaa1c84233f7bb8c8a45baede41091c616506
Arg [4] : 0000000000000000000000005df4707980440d7beb2ad83dfa0321889fb27aed
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Multichain Portfolio | 30 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.