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Latest 25 from a total of 2,261 transactions
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Multi Unstake | 20726636 | 4 days ago | IN | 0 ETH | 0.00048714 | ||||
Unstake | 20711780 | 6 days ago | IN | 0 ETH | 0.00068843 | ||||
Unstake | 20648976 | 15 days ago | IN | 0 ETH | 0.0002416 | ||||
Multi Unstake | 19955340 | 112 days ago | IN | 0 ETH | 0.0027053 | ||||
Unstake | 19955337 | 112 days ago | IN | 0 ETH | 0.0020543 | ||||
Multi Unstake | 19933284 | 115 days ago | IN | 0 ETH | 0.00708447 | ||||
Multi Unstake | 19807596 | 133 days ago | IN | 0 ETH | 0.00563363 | ||||
Multi Unstake | 18283892 | 346 days ago | IN | 0 ETH | 0.00674586 | ||||
Multi Unstake | 17984825 | 388 days ago | IN | 0 ETH | 0.0040558 | ||||
Unstake | 17857598 | 406 days ago | IN | 0 ETH | 0.00297027 | ||||
Multi Payout Rew... | 17833785 | 409 days ago | IN | 0 ETH | 0.00397238 | ||||
Multi Unstake | 17806034 | 413 days ago | IN | 0 ETH | 0.00815855 | ||||
Multi Unstake | 17797165 | 414 days ago | IN | 0 ETH | 0.00856488 | ||||
Unstake | 17573205 | 446 days ago | IN | 0 ETH | 0.00196543 | ||||
Unstake | 17554277 | 448 days ago | IN | 0 ETH | 0.00163712 | ||||
Multi Unstake | 17519179 | 453 days ago | IN | 0 ETH | 0.00417716 | ||||
Unstake | 17002704 | 526 days ago | IN | 0 ETH | 0.00246764 | ||||
Multi Unstake | 16919989 | 538 days ago | IN | 0 ETH | 0.00713036 | ||||
Multi Unstake | 16861498 | 546 days ago | IN | 0 ETH | 0.00251938 | ||||
Multi Payout Rew... | 16837831 | 549 days ago | IN | 0 ETH | 0.00240722 | ||||
Unstake | 16818130 | 552 days ago | IN | 0 ETH | 0.00199838 | ||||
Unstake | 16790763 | 556 days ago | IN | 0 ETH | 0.00399284 | ||||
Multi Unstake | 16704534 | 568 days ago | IN | 0 ETH | 0.0035145 | ||||
Payout Reward | 16676047 | 572 days ago | IN | 0 ETH | 0.00271607 | ||||
Multi Stake | 16654866 | 575 days ago | IN | 0 ETH | 0.008589 |
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Contract Name:
ANCApeStake
Compiler Version
v0.8.15+commit.e14f2714
Optimization Enabled:
Yes with 100 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT /*** * .';:c:,. * ;0NNNNNNX. lNNNNNNK; .XNNNNN. .:d0XWWWWWWWWXOo' * lXWWWWWWWWO XWWWWWWWWO. :WWWWWK ;0WWWWWWWWWWWWWWWWWK, * .dNWWWWWWWWWWc ,WWWWWWWWWWNo kWWWWWo .0WWWWWNkc,...;oXWWXxc. * ,kWWWWWWXWWWWWW. dWWWWWXNWWWWWX; .NWWWWW. KWWWWW0. ;. * :KWWWWWNd.lWWWWWO XWWWWW:.xWWWWWWOdWWWWW0 cWWWWWW. * lXWWWWWXl. 0WWWWW: ,WWWWWN '0WWWWWWWWWWWl oWWWWWW; :, * .dNWWWWW0; 'WWWWWN. xWWWWWx :XWWWWWWWWW. .NWWWWWWkc,'';ckNWWNOc. * 'kWWWWWWx' oWWWWWk NWWWWW, oWWWWWWW0 '0WWWWWWWWWWWWWWWWWO; * .d000000o. k00000; ,00000k .x00000: .lkKNWWWWWWNKko;. * .,;;'. */ pragma solidity ^0.8.15; import "@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol"; import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; import "erc721a/contracts/ERC721A.sol"; import "./ANCStake.sol"; contract ANCApeStake is ANCStake { struct StakedApe { uint128 stakingStartWeek; uint32 stakingDuration; uint32 paidDuration; } IERC721A private _ancApe; mapping(address => mapping(uint256 => StakedApe)) private _stakes; constructor(uint256 percentPerWeek, address nftTokenAddress) ANCStake(percentPerWeek){ _ancApe = IERC721A(nftTokenAddress); } /* External Functions */ function onERC721Received( address, address, uint256, bytes calldata ) external pure returns (bytes4) { return bytes4(keccak256("onERC721Received(address,address,uint256,bytes)")); } function stake(uint256 tokenId, uint32 stakingDuration) external stakingGate(stakingDuration){ _ancApe.safeTransferFrom(msg.sender, address(this), tokenId); uint256 currentWeek = getCurrentWeek(); _stakes[msg.sender][tokenId] = StakedApe(uint128(currentWeek), stakingDuration, 0); addSharesToWeeks(currentWeek, stakingDuration, getShares(stakingDuration)); } function multiStake(uint256[] calldata tokenIDs, uint32 stakingDuration) external stakingGate(stakingDuration){ require(tokenIDs.length>0, "No token IDs given"); require(tokenIDs.length<=20, "Can't stake more than 20 at once"); //to prevent excessive gas use uint256 currentWeek = getCurrentWeek(); uint256 tokenId; for (uint256 id = 0; id < tokenIDs.length; id++) { tokenId = tokenIDs[id]; _ancApe.safeTransferFrom(msg.sender, address(this), tokenId); _stakes[msg.sender][tokenId] = StakedApe(uint128(currentWeek), stakingDuration, 0); } addSharesToWeeks(currentWeek, stakingDuration, getShares(stakingDuration)*tokenIDs.length); } function unstake(uint256 _tokenId) external { uint256 currentWeek = getCurrentWeek(); reserveForPastWeeks(currentWeek); // reserve reward tokens StakedApe memory mstake = _stakes[msg.sender][_tokenId]; require(currentWeek - mstake.stakingStartWeek >= mstake.stakingDuration, "Staking period not over"); uint256 payout = _getReward(currentWeek, mstake); _reservedTokens -= payout; // remove payout tokens from reserved delete _stakes[msg.sender][_tokenId]; _ancApe.safeTransferFrom(address(this), msg.sender, _tokenId); _danceSplitter.proxySend(msg.sender, payout); } function multiUnstake(uint256[] calldata tokenIDs) external { require(tokenIDs.length>0, "No token IDs given"); require(tokenIDs.length<=20, "Can't unstake more than 20 at once"); //to prevent excessive gas use uint256 currentWeek = getCurrentWeek(); reserveForPastWeeks(currentWeek); // reserve reward tokens uint256 payout = 0; uint256 tokenId; StakedApe memory mstake; for (uint256 id = 0; id < tokenIDs.length; id++) { tokenId = tokenIDs[id]; mstake = _stakes[msg.sender][tokenId]; require(currentWeek - mstake.stakingStartWeek >= mstake.stakingDuration, "Staking period not over"); payout += _getReward(currentWeek, mstake); delete _stakes[msg.sender][tokenId]; _ancApe.safeTransferFrom(address(this), msg.sender, tokenId); } _reservedTokens -= payout; // remove payout tokens from reserved _danceSplitter.proxySend(msg.sender, payout); } function payoutReward(uint256 _tokenId) external override { uint256 currentWeek = getCurrentWeek(); reserveForPastWeeks(currentWeek); // reserve reward tokens StakedApe memory mstake = _stakes[msg.sender][_tokenId]; require(currentWeek - mstake.stakingStartWeek < mstake.stakingDuration, "Staking period is over, use unstake function instead"); require(mstake.stakingStartWeek + mstake.paidDuration < currentWeek, "Nothing to pay out"); uint256 payout = _getReward(currentWeek, mstake); _reservedTokens -= payout; _stakes[msg.sender][_tokenId].paidDuration = uint16(min(currentWeek - mstake.stakingStartWeek, mstake.stakingDuration)); require(payout > 0, "No reward to pay out"); _danceSplitter.proxySend(msg.sender, payout); } function multiPayoutRewards(uint256[] calldata tokenIDs) external { uint256 currentWeek = getCurrentWeek(); reserveForPastWeeks(currentWeek); // reserve reward tokens uint256 payout = 0; uint256 tokenId; StakedApe memory mstake; for (uint256 id = 0; id < tokenIDs.length; id++) { tokenId = tokenIDs[id]; mstake = _stakes[msg.sender][tokenId]; if(!canBeUnstaked(mstake, currentWeek)) { //require(currentWeek - mstake.stakingStartWeek < mstake.stakingDuration, "Staking period is over, use unstake function"); if(mstake.stakingStartWeek + mstake.paidDuration < currentWeek){ payout += _getReward(currentWeek, mstake); _stakes[msg.sender][tokenId].paidDuration = uint16(min(currentWeek - mstake.stakingStartWeek, mstake.stakingDuration)); } } } _reservedTokens -= payout; require(payout > 0, "No reward to pay out"); _danceSplitter.proxySend(msg.sender, payout); } function getIDsDoneStaking(address address_) external view returns(uint256[] memory){ uint256 currentWeek = getCurrentWeek(); uint256 numDoneStaking = 0; uint256[] memory stakedIDs = getStakedIDs(address_); uint256 tokenId; // calculate how many token IDs are ready to be unstaked for (uint256 i = 0; i < stakedIDs.length; i++) { tokenId = stakedIDs[i]; if (canBeUnstaked(_stakes[address_][tokenId], currentWeek)) numDoneStaking += 1; } // select token IDs ready for unstaking uint256[] memory doneStaking = new uint256[](numDoneStaking); uint256 index = 0; for (uint256 i = 0; i < stakedIDs.length; i++) { tokenId = stakedIDs[i]; if (canBeUnstaked(_stakes[address_][tokenId], currentWeek)) { doneStaking[index] = tokenId; index += 1; } } return doneStaking; } /* Public Functions */ function getNumStaked(address address_) public view override returns(uint256){ uint256 supply = _ancApe.totalSupply(); uint256 numStaked = 0; for (uint256 id = 0; id < supply; id++) { if(_stakes[address_][id].stakingStartWeek > 0){ numStaked += 1; } } return numStaked; } function getStakeInfo(address address_, uint256 tokenId_) public view returns(StakedApe memory){ return _stakes[address_][tokenId_]; } function getAvailablePayout(address address_, uint256 tokenId_) public view returns(uint256){ uint256 currentWeek = getCurrentWeek(); StakedApe memory mstake = _stakes[address_][tokenId_]; uint256 endWeek = mstake.stakingStartWeek + mstake.stakingDuration; uint256 startWeek = mstake.stakingStartWeek + mstake.paidDuration; uint256 shares = getShares(mstake.stakingDuration); return _getAvailablePayout(startWeek, endWeek, currentWeek, shares); } function getStakedIDs(address address_) public view override returns(uint256[] memory){ uint256 supply = _ancApe.totalSupply(); uint256 numStaked = getNumStaked(address_); uint256[] memory stakedIDs = new uint256[](numStaked); uint256 index = 0; for (uint256 id = 0; id < supply; id++) { if(_stakes[address_][id].stakingStartWeek > 0){ stakedIDs[index] = id; index += 1; } } return stakedIDs; } function getShares(uint32 stakingDuration) public pure returns(uint256){ // max shares per nft < (2^32 -1)/8888 = 483232 uint256 sD = stakingDuration; uint256 base = 50; uint256 linear = 30 * sD / MAX_STAKING_DURATION; uint256 quadratic = 20 * sD * sD / (MAX_STAKING_DURATION*MAX_STAKING_DURATION); return base + linear + quadratic; } /* Internal Functions */ function _getReward(uint256 currentWeek, StakedApe memory mstake) internal view returns(uint256){ require(mstake.stakingStartWeek > 0, "Token is not staked"); uint256 payout = getStakingReward( mstake.stakingStartWeek, currentWeek, mstake.stakingDuration, mstake.paidDuration, getShares(uint16(mstake.stakingDuration)) ); // need to update state (paidDuration) in next step return payout; } function canBeUnstaked(StakedApe memory mstake, uint256 currentWeek) internal pure returns(bool){ if (mstake.stakingStartWeek == 0) return false; return (currentWeek - mstake.stakingStartWeek >= mstake.stakingDuration); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol) pragma solidity ^0.8.0; /** * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. */ interface IERC721Receiver { /** * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`. */ function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/utils/SafeERC20.sol) pragma solidity ^0.8.0; import "../IERC20.sol"; import "../extensions/draft-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; function safeTransfer( IERC20 token, address to, uint256 value ) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } 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)); } function safeIncreaseAllowance( IERC20 token, address spender, uint256 value ) internal { uint256 newAllowance = token.allowance(address(this), spender) + value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } 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"); uint256 newAllowance = oldAllowance - value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } } 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"); if (returndata.length > 0) { // Return data is optional require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } }
// SPDX-License-Identifier: MIT // ERC721A Contracts v3.3.0 // Creator: Chiru Labs pragma solidity ^0.8.4; import './IERC721A.sol'; import '@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol'; import '@openzeppelin/contracts/utils/Address.sol'; import '@openzeppelin/contracts/utils/Context.sol'; import '@openzeppelin/contracts/utils/Strings.sol'; import '@openzeppelin/contracts/utils/introspection/ERC165.sol'; /** * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including * the Metadata extension. Built to optimize for lower gas during batch mints. * * Assumes serials are sequentially minted starting at _startTokenId() (defaults to 0, e.g. 0, 1, 2, 3..). * * Assumes that an owner cannot have more than 2**64 - 1 (max value of uint64) of supply. * * Assumes that the maximum token id cannot exceed 2**256 - 1 (max value of uint256). */ contract ERC721A is Context, ERC165, IERC721A { using Address for address; using Strings for uint256; // The tokenId of the next token to be minted. uint256 internal _currentIndex; // The number of tokens burned. uint256 internal _burnCounter; // Token name string private _name; // Token symbol string private _symbol; // Mapping from token ID to ownership details // An empty struct value does not necessarily mean the token is unowned. See _ownershipOf implementation for details. mapping(uint256 => TokenOwnership) internal _ownerships; // Mapping owner address to address data mapping(address => AddressData) private _addressData; // Mapping from token ID to approved address mapping(uint256 => address) private _tokenApprovals; // Mapping from owner to operator approvals mapping(address => mapping(address => bool)) private _operatorApprovals; constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; _currentIndex = _startTokenId(); } /** * To change the starting tokenId, please override this function. */ function _startTokenId() internal view virtual returns (uint256) { return 0; } /** * @dev Burned tokens are calculated here, use _totalMinted() if you want to count just minted tokens. */ function totalSupply() public view override returns (uint256) { // Counter underflow is impossible as _burnCounter cannot be incremented // more than _currentIndex - _startTokenId() times unchecked { return _currentIndex - _burnCounter - _startTokenId(); } } /** * Returns the total amount of tokens minted in the contract. */ function _totalMinted() internal view returns (uint256) { // Counter underflow is impossible as _currentIndex does not decrement, // and it is initialized to _startTokenId() unchecked { return _currentIndex - _startTokenId(); } } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) { return interfaceId == type(IERC721).interfaceId || interfaceId == type(IERC721Metadata).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC721-balanceOf}. */ function balanceOf(address owner) public view override returns (uint256) { if (owner == address(0)) revert BalanceQueryForZeroAddress(); return uint256(_addressData[owner].balance); } /** * Returns the number of tokens minted by `owner`. */ function _numberMinted(address owner) internal view returns (uint256) { return uint256(_addressData[owner].numberMinted); } /** * Returns the number of tokens burned by or on behalf of `owner`. */ function _numberBurned(address owner) internal view returns (uint256) { return uint256(_addressData[owner].numberBurned); } /** * Returns the auxillary data for `owner`. (e.g. number of whitelist mint slots used). */ function _getAux(address owner) internal view returns (uint64) { return _addressData[owner].aux; } /** * Sets the auxillary data for `owner`. (e.g. number of whitelist mint slots used). * If there are multiple variables, please pack them into a uint64. */ function _setAux(address owner, uint64 aux) internal { _addressData[owner].aux = aux; } /** * Gas spent here starts off proportional to the maximum mint batch size. * It gradually moves to O(1) as tokens get transferred around in the collection over time. */ function _ownershipOf(uint256 tokenId) internal view returns (TokenOwnership memory) { uint256 curr = tokenId; unchecked { if (_startTokenId() <= curr) if (curr < _currentIndex) { TokenOwnership memory ownership = _ownerships[curr]; if (!ownership.burned) { if (ownership.addr != address(0)) { return ownership; } // Invariant: // There will always be an ownership that has an address and is not burned // before an ownership that does not have an address and is not burned. // Hence, curr will not underflow. while (true) { curr--; ownership = _ownerships[curr]; if (ownership.addr != address(0)) { return ownership; } } } } } revert OwnerQueryForNonexistentToken(); } /** * @dev See {IERC721-ownerOf}. */ function ownerOf(uint256 tokenId) public view override returns (address) { return _ownershipOf(tokenId).addr; } /** * @dev See {IERC721Metadata-name}. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev See {IERC721Metadata-symbol}. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev See {IERC721Metadata-tokenURI}. */ function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { if (!_exists(tokenId)) revert URIQueryForNonexistentToken(); string memory baseURI = _baseURI(); return bytes(baseURI).length != 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : ''; } /** * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each * token will be the concatenation of the `baseURI` and the `tokenId`. Empty * by default, can be overriden in child contracts. */ function _baseURI() internal view virtual returns (string memory) { return ''; } /** * @dev See {IERC721-approve}. */ function approve(address to, uint256 tokenId) public override { address owner = ERC721A.ownerOf(tokenId); if (to == owner) revert ApprovalToCurrentOwner(); if (_msgSender() != owner) if(!isApprovedForAll(owner, _msgSender())) { revert ApprovalCallerNotOwnerNorApproved(); } _approve(to, tokenId, owner); } /** * @dev See {IERC721-getApproved}. */ function getApproved(uint256 tokenId) public view override returns (address) { if (!_exists(tokenId)) revert ApprovalQueryForNonexistentToken(); return _tokenApprovals[tokenId]; } /** * @dev See {IERC721-setApprovalForAll}. */ function setApprovalForAll(address operator, bool approved) public virtual override { if (operator == _msgSender()) revert ApproveToCaller(); _operatorApprovals[_msgSender()][operator] = approved; emit ApprovalForAll(_msgSender(), operator, approved); } /** * @dev See {IERC721-isApprovedForAll}. */ function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } /** * @dev See {IERC721-transferFrom}. */ function transferFrom( address from, address to, uint256 tokenId ) public virtual override { _transfer(from, to, tokenId); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId ) public virtual override { safeTransferFrom(from, to, tokenId, ''); } /** * @dev See {IERC721-safeTransferFrom}. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes memory _data ) public virtual override { _transfer(from, to, tokenId); if (to.isContract()) if(!_checkContractOnERC721Received(from, to, tokenId, _data)) { revert TransferToNonERC721ReceiverImplementer(); } } /** * @dev Returns whether `tokenId` exists. * * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}. * * Tokens start existing when they are minted (`_mint`), */ function _exists(uint256 tokenId) internal view returns (bool) { return _startTokenId() <= tokenId && tokenId < _currentIndex && !_ownerships[tokenId].burned; } /** * @dev Equivalent to `_safeMint(to, quantity, '')`. */ function _safeMint(address to, uint256 quantity) internal { _safeMint(to, quantity, ''); } /** * @dev Safely mints `quantity` tokens and transfers them to `to`. * * Requirements: * * - If `to` refers to a smart contract, it must implement * {IERC721Receiver-onERC721Received}, which is called for each safe transfer. * - `quantity` must be greater than 0. * * Emits a {Transfer} event. */ function _safeMint( address to, uint256 quantity, bytes memory _data ) internal { uint256 startTokenId = _currentIndex; if (to == address(0)) revert MintToZeroAddress(); if (quantity == 0) revert MintZeroQuantity(); _beforeTokenTransfers(address(0), to, startTokenId, quantity); // Overflows are incredibly unrealistic. // balance or numberMinted overflow if current value of either + quantity > 1.8e19 (2**64) - 1 // updatedIndex overflows if _currentIndex + quantity > 1.2e77 (2**256) - 1 unchecked { _addressData[to].balance += uint64(quantity); _addressData[to].numberMinted += uint64(quantity); _ownerships[startTokenId].addr = to; _ownerships[startTokenId].startTimestamp = uint64(block.timestamp); uint256 updatedIndex = startTokenId; uint256 end = updatedIndex + quantity; if (to.isContract()) { do { emit Transfer(address(0), to, updatedIndex); if (!_checkContractOnERC721Received(address(0), to, updatedIndex++, _data)) { revert TransferToNonERC721ReceiverImplementer(); } } while (updatedIndex < end); // Reentrancy protection if (_currentIndex != startTokenId) revert(); } else { do { emit Transfer(address(0), to, updatedIndex++); } while (updatedIndex < end); } _currentIndex = updatedIndex; } _afterTokenTransfers(address(0), to, startTokenId, quantity); } /** * @dev Mints `quantity` tokens and transfers them to `to`. * * Requirements: * * - `to` cannot be the zero address. * - `quantity` must be greater than 0. * * Emits a {Transfer} event. */ function _mint(address to, uint256 quantity) internal { uint256 startTokenId = _currentIndex; if (to == address(0)) revert MintToZeroAddress(); if (quantity == 0) revert MintZeroQuantity(); _beforeTokenTransfers(address(0), to, startTokenId, quantity); // Overflows are incredibly unrealistic. // balance or numberMinted overflow if current value of either + quantity > 1.8e19 (2**64) - 1 // updatedIndex overflows if _currentIndex + quantity > 1.2e77 (2**256) - 1 unchecked { _addressData[to].balance += uint64(quantity); _addressData[to].numberMinted += uint64(quantity); _ownerships[startTokenId].addr = to; _ownerships[startTokenId].startTimestamp = uint64(block.timestamp); uint256 updatedIndex = startTokenId; uint256 end = updatedIndex + quantity; do { emit Transfer(address(0), to, updatedIndex++); } while (updatedIndex < end); _currentIndex = updatedIndex; } _afterTokenTransfers(address(0), to, startTokenId, quantity); } /** * @dev Transfers `tokenId` from `from` to `to`. * * Requirements: * * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * * Emits a {Transfer} event. */ function _transfer( address from, address to, uint256 tokenId ) private { TokenOwnership memory prevOwnership = _ownershipOf(tokenId); if (prevOwnership.addr != from) revert TransferFromIncorrectOwner(); bool isApprovedOrOwner = (_msgSender() == from || isApprovedForAll(from, _msgSender()) || getApproved(tokenId) == _msgSender()); if (!isApprovedOrOwner) revert TransferCallerNotOwnerNorApproved(); if (to == address(0)) revert TransferToZeroAddress(); _beforeTokenTransfers(from, to, tokenId, 1); // Clear approvals from the previous owner _approve(address(0), tokenId, from); // Underflow of the sender's balance is impossible because we check for // ownership above and the recipient's balance can't realistically overflow. // Counter overflow is incredibly unrealistic as tokenId would have to be 2**256. unchecked { _addressData[from].balance -= 1; _addressData[to].balance += 1; TokenOwnership storage currSlot = _ownerships[tokenId]; currSlot.addr = to; currSlot.startTimestamp = uint64(block.timestamp); // If the ownership slot of tokenId+1 is not explicitly set, that means the transfer initiator owns it. // Set the slot of tokenId+1 explicitly in storage to maintain correctness for ownerOf(tokenId+1) calls. uint256 nextTokenId = tokenId + 1; TokenOwnership storage nextSlot = _ownerships[nextTokenId]; if (nextSlot.addr == address(0)) { // This will suffice for checking _exists(nextTokenId), // as a burned slot cannot contain the zero address. if (nextTokenId != _currentIndex) { nextSlot.addr = from; nextSlot.startTimestamp = prevOwnership.startTimestamp; } } } emit Transfer(from, to, tokenId); _afterTokenTransfers(from, to, tokenId, 1); } /** * @dev Equivalent to `_burn(tokenId, false)`. */ function _burn(uint256 tokenId) internal virtual { _burn(tokenId, false); } /** * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. */ function _burn(uint256 tokenId, bool approvalCheck) internal virtual { TokenOwnership memory prevOwnership = _ownershipOf(tokenId); address from = prevOwnership.addr; if (approvalCheck) { bool isApprovedOrOwner = (_msgSender() == from || isApprovedForAll(from, _msgSender()) || getApproved(tokenId) == _msgSender()); if (!isApprovedOrOwner) revert TransferCallerNotOwnerNorApproved(); } _beforeTokenTransfers(from, address(0), tokenId, 1); // Clear approvals from the previous owner _approve(address(0), tokenId, from); // Underflow of the sender's balance is impossible because we check for // ownership above and the recipient's balance can't realistically overflow. // Counter overflow is incredibly unrealistic as tokenId would have to be 2**256. unchecked { AddressData storage addressData = _addressData[from]; addressData.balance -= 1; addressData.numberBurned += 1; // Keep track of who burned the token, and the timestamp of burning. TokenOwnership storage currSlot = _ownerships[tokenId]; currSlot.addr = from; currSlot.startTimestamp = uint64(block.timestamp); currSlot.burned = true; // If the ownership slot of tokenId+1 is not explicitly set, that means the burn initiator owns it. // Set the slot of tokenId+1 explicitly in storage to maintain correctness for ownerOf(tokenId+1) calls. uint256 nextTokenId = tokenId + 1; TokenOwnership storage nextSlot = _ownerships[nextTokenId]; if (nextSlot.addr == address(0)) { // This will suffice for checking _exists(nextTokenId), // as a burned slot cannot contain the zero address. if (nextTokenId != _currentIndex) { nextSlot.addr = from; nextSlot.startTimestamp = prevOwnership.startTimestamp; } } } emit Transfer(from, address(0), tokenId); _afterTokenTransfers(from, address(0), tokenId, 1); // Overflow not possible, as _burnCounter cannot be exceed _currentIndex times. unchecked { _burnCounter++; } } /** * @dev Approve `to` to operate on `tokenId` * * Emits a {Approval} event. */ function _approve( address to, uint256 tokenId, address owner ) private { _tokenApprovals[tokenId] = to; emit Approval(owner, to, tokenId); } /** * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target contract. * * @param from address representing the previous owner of the given token ID * @param to target address that will receive the tokens * @param tokenId uint256 ID of the token to be transferred * @param _data bytes optional data to send along with the call * @return bool whether the call correctly returned the expected magic value */ function _checkContractOnERC721Received( address from, address to, uint256 tokenId, bytes memory _data ) private returns (bool) { try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) { return retval == IERC721Receiver(to).onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert TransferToNonERC721ReceiverImplementer(); } else { assembly { revert(add(32, reason), mload(reason)) } } } } /** * @dev Hook that is called before a set of serially-ordered token ids are about to be transferred. This includes minting. * And also called before burning one token. * * startTokenId - the first token id to be transferred * quantity - the amount to be transferred * * Calling conditions: * * - When `from` and `to` are both non-zero, `from`'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, `tokenId` will be burned by `from`. * - `from` and `to` are never both zero. */ function _beforeTokenTransfers( address from, address to, uint256 startTokenId, uint256 quantity ) internal virtual {} /** * @dev Hook that is called after a set of serially-ordered token ids have been transferred. This includes * minting. * And also called after one token has been burned. * * startTokenId - the first token id to be transferred * quantity - the amount to be transferred * * Calling conditions: * * - When `from` and `to` are both non-zero, `from`'s `tokenId` has been * transferred to `to`. * - When `from` is zero, `tokenId` has been minted for `to`. * - When `to` is zero, `tokenId` has been burned by `from`. * - `from` and `to` are never both zero. */ function _afterTokenTransfers( address from, address to, uint256 startTokenId, uint256 quantity ) internal virtual {} }
// SPDX-License-Identifier: MIT /*** * .';:c:,. * ;0NNNNNNX. lNNNNNNK; .XNNNNN. .:d0XWWWWWWWWXOo' * lXWWWWWWWWO XWWWWWWWWO. :WWWWWK ;0WWWWWWWWWWWWWWWWWK, * .dNWWWWWWWWWWc ,WWWWWWWWWWNo kWWWWWo .0WWWWWNkc,...;oXWWXxc. * ,kWWWWWWXWWWWWW. dWWWWWXNWWWWWX; .NWWWWW. KWWWWW0. ;. * :KWWWWWNd.lWWWWWO XWWWWW:.xWWWWWWOdWWWWW0 cWWWWWW. * lXWWWWWXl. 0WWWWW: ,WWWWWN '0WWWWWWWWWWWl oWWWWWW; :, * .dNWWWWW0; 'WWWWWN. xWWWWWx :XWWWWWWWWW. .NWWWWWWkc,'';ckNWWNOc. * 'kWWWWWWx' oWWWWWk NWWWWW, oWWWWWWW0 '0WWWWWWWWWWWWWWWWWO; * .d000000o. k00000; ,00000k .x00000: .lkKNWWWWWWNKko;. * .,;;'. */ pragma solidity ^0.8.15; import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; import "@openzeppelin/contracts/access/Ownable.sol"; import "./FeeSplitter.sol"; abstract contract ANCStake is Ownable{ struct TwoWeekInfo{ uint96 tokensEvenWeek; uint32 totalSharesEvenWeek; uint96 tokensOddWeek; uint32 totalSharesOddWeek; } uint256 public constant MAX_STAKING_DURATION = 52; uint256 public constant ONE_WEEK = 604800; // 1 week = 604800 uint256 public tenthPercentPerWeek; uint256 public stakingStart; FeeSplitter internal _danceSplitter; uint256 internal _reservedTokens; mapping(uint256 => TwoWeekInfo) private _weeklyInfo; constructor(uint256 tenthPercentPerWeek_){ tenthPercentPerWeek = tenthPercentPerWeek_; } modifier stakingGate(uint32 duration){ require(stakingStart > 0, "Staking has not started"); require(duration >= 1, "Minimum staking period 1 week"); require(duration <= MAX_STAKING_DURATION, "Maximum staking period 1 year"); _; } /* External Functions */ function payoutReward(uint256) virtual external; function setRewardSplitter(address splitterAddress) external onlyOwner { require(_danceSplitter == FeeSplitter(address(0)), "Splitter already set"); require(splitterAddress != address(0), "splitter cannot be 0 address"); _danceSplitter = FeeSplitter(splitterAddress); } function setStakingStart() external onlyOwner { require(stakingStart == 0, "Staking has already started."); stakingStart = block.timestamp; } function setTenthPercentPerWeek(uint256 tenthPercentPerWeek_) external onlyOwner { require(tenthPercentPerWeek_ > 0, "Value must be bigger than 0"); tenthPercentPerWeek = tenthPercentPerWeek_; } function getFundsForWeeksLowerBound(uint256 startWeek, uint256 endWeek) external view returns(uint256){ uint256 currentWeek = getCurrentWeek(); uint256 currentFunds = getAvailableFunds(); uint256 lastUnreservedWeek = findLastUnreservedWeek(currentWeek); uint256 fundsForWeeks = 0; for (uint256 week = startWeek; week < lastUnreservedWeek; week++) { fundsForWeeks += getBasePayoutForWeek(week); } uint256 basePayoutForWeek; for (uint256 week = lastUnreservedWeek; week < currentWeek; week++) { if (getSharesForWeek(week) > 0) { basePayoutForWeek = currentFunds * tenthPercentPerWeek / 1000; currentFunds -= basePayoutForWeek; fundsForWeeks += basePayoutForWeek; } } for (uint256 week = currentWeek; week < endWeek; week++) { basePayoutForWeek = currentFunds * tenthPercentPerWeek / 1000; currentFunds -= basePayoutForWeek; fundsForWeeks += basePayoutForWeek; } return fundsForWeeks; } /* Public Functions */ function getStakedIDs(address) public view virtual returns(uint256[] memory); function getNumStaked(address) public view virtual returns(uint256); function getAvailableFunds() public view returns(uint256){ return _danceSplitter.balanceOf(address(this)) - _reservedTokens; } function getBasePayoutForWeek(uint256 week) public view returns(uint256){ if(week & 1 == 0){ return _weeklyInfo[week].tokensEvenWeek; }else{ return _weeklyInfo[week-1].tokensOddWeek; } } function getSharesForWeek(uint256 week) public view returns(uint256){ if(week & 1 == 0){ return _weeklyInfo[week].totalSharesEvenWeek; }else{ return _weeklyInfo[week-1].totalSharesOddWeek; } } function getCurrentWeek() public view returns(uint256){ return timestamp2week(block.timestamp); } /* Internal Functions */ function addSharesToWeeks(uint256 startWeek, uint256 duration, uint256 amount) internal{ for (uint256 i = startWeek; i < startWeek+duration; i++) { if(i & 1 == 0){ _weeklyInfo[i].totalSharesEvenWeek += uint32(amount); }else{ _weeklyInfo[i-1].totalSharesOddWeek += uint32(amount); } } } function reserveAndGetTokens(uint256 balance) internal returns(uint256){ //console.log("balance:", _dance.balanceOf(address(this))); uint256 newReserved = (balance - _reservedTokens) * tenthPercentPerWeek / 1000; _reservedTokens += newReserved; //console.log("reserved tokens:", _reservedTokens); return newReserved; } function reserveForPastWeeks(uint256 currentWeek) internal{ // find last reserved Week uint256 lastUnreservedWeek = findLastUnreservedWeek(currentWeek); //console.log("current week", currentWeek); //console.log("last unreserved week ", lastUnreservedWeek); if (lastUnreservedWeek >= currentWeek) return; // reserved unclaimed weeks uint256 balance = _danceSplitter.balanceOf(address(this)); for (uint256 week = lastUnreservedWeek; week < currentWeek; week++) { if(week & 1 == 0){ if (_weeklyInfo[week].totalSharesEvenWeek > 0) { _weeklyInfo[week].tokensEvenWeek = uint96(reserveAndGetTokens(balance)); //console.log("tokens for week", week, _weeklyInfo[week].tokensEvenWeek); } } else { if (_weeklyInfo[week-1].totalSharesOddWeek > 0) { _weeklyInfo[week-1].tokensOddWeek = uint96(reserveAndGetTokens(balance)); //console.log("tokens for week", week, _weeklyInfo[week-1].tokensOddWeek); } } } } function findLastUnreservedWeek(uint256 currentWeek) internal view returns(uint256){ uint256 week = currentWeek; uint256 tokensForWeek; while(week > 1) { week -= 1; if(week & 1 == 0){ tokensForWeek = _weeklyInfo[week].tokensEvenWeek; } else { tokensForWeek = _weeklyInfo[week-1].tokensOddWeek; } if (tokensForWeek > 0) return week+1; } return 0; } function getStakingReward( uint256 stakingStartWeek, uint256 currentWeek, uint256 duration, uint256 paidDuration, uint256 shares ) internal view returns(uint256){ if (stakingStartWeek + paidDuration >= currentWeek) return 0; // no weeks to pay out return _getStakingReward(stakingStartWeek+paidDuration, min(currentWeek, stakingStartWeek+duration), shares); } function _getStakingReward(uint256 startWeek, uint256 endWeek, uint256 shares) internal view returns(uint256){ uint256 payout = 0; uint256 weeklyShares; for(uint256 i = startWeek; i < endWeek; i++){ if(i & 1 == 0){ weeklyShares = _weeklyInfo[i].totalSharesEvenWeek; } else { weeklyShares = _weeklyInfo[i-1].totalSharesOddWeek; } payout += (getBasePayoutForWeek(i) * shares) / weeklyShares; } return payout; } function _getAvailablePayout(uint256 startWeek, uint256 endWeek, uint256 currentWeek, uint256 shares) internal view returns (uint256) { uint256 currentFunds = getAvailableFunds(); endWeek = min(endWeek, currentWeek); uint256 lastUnreservedWeek = findLastUnreservedWeek(currentWeek); uint256 payout = 0; uint256 basePayoutForWeek; uint256 sharesForWeek; for (uint256 week = startWeek; week < endWeek; week++) { sharesForWeek = getSharesForWeek(week); if (sharesForWeek > 0) { if (week < lastUnreservedWeek) { // week has funds reserved basePayoutForWeek = getBasePayoutForWeek(week); } else { // week does not have funds reserved basePayoutForWeek = currentFunds * tenthPercentPerWeek / 1000; currentFunds -= basePayoutForWeek; } payout += (basePayoutForWeek * shares) / sharesForWeek; } } return payout; } function timestamp2week (uint256 timestamp) internal view returns(uint256) { return ((timestamp - stakingStart) / ONE_WEEK)+1; } function min(uint256 a, uint256 b) internal pure returns (uint256) { return (a <= b) ? a : b; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.6.0) (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 v4.4.1 (token/ERC20/extensions/draft-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. */ 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]. */ 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 v4.7.0) (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 * ==== * * [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://diligence.consensys.net/posts/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/v0.5.11/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 functionCall(target, data, "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"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(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) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(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) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason 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 { // 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 // ERC721A Contracts v3.3.0 // Creator: Chiru Labs pragma solidity ^0.8.4; import '@openzeppelin/contracts/token/ERC721/IERC721.sol'; import '@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol'; /** * @dev Interface of an ERC721A compliant contract. */ interface IERC721A is IERC721, IERC721Metadata { /** * The caller must own the token or be an approved operator. */ error ApprovalCallerNotOwnerNorApproved(); /** * The token does not exist. */ error ApprovalQueryForNonexistentToken(); /** * The caller cannot approve to their own address. */ error ApproveToCaller(); /** * The caller cannot approve to the current owner. */ error ApprovalToCurrentOwner(); /** * Cannot query the balance for the zero address. */ error BalanceQueryForZeroAddress(); /** * Cannot mint to the zero address. */ error MintToZeroAddress(); /** * The quantity of tokens minted must be more than zero. */ error MintZeroQuantity(); /** * The token does not exist. */ error OwnerQueryForNonexistentToken(); /** * The caller must own the token or be an approved operator. */ error TransferCallerNotOwnerNorApproved(); /** * The token must be owned by `from`. */ error TransferFromIncorrectOwner(); /** * Cannot safely transfer to a contract that does not implement the ERC721Receiver interface. */ error TransferToNonERC721ReceiverImplementer(); /** * Cannot transfer to the zero address. */ error TransferToZeroAddress(); /** * The token does not exist. */ error URIQueryForNonexistentToken(); // Compiler will pack this into a single 256bit word. struct TokenOwnership { // The address of the owner. address addr; // Keeps track of the start time of ownership with minimal overhead for tokenomics. uint64 startTimestamp; // Whether the token has been burned. bool burned; } // Compiler will pack this into a single 256bit word. struct AddressData { // Realistically, 2**64-1 is more than enough. uint64 balance; // Keeps track of mint count with minimal overhead for tokenomics. uint64 numberMinted; // Keeps track of burn count with minimal overhead for tokenomics. uint64 numberBurned; // For miscellaneous variable(s) pertaining to the address // (e.g. number of whitelist mint slots used). // If there are multiple variables, please pack them into a uint64. uint64 aux; } /** * @dev Returns the total amount of tokens stored by the contract. * * Burned tokens are calculated here, use `_totalMinted()` if you want to count just minted tokens. */ function totalSupply() external view returns (uint256); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (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; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol) pragma solidity ^0.8.0; /** * @dev String operations. */ library Strings { bytes16 private constant _HEX_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) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /** * @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] = _HEX_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); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol) pragma solidity ^0.8.0; import "./IERC165.sol"; /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. */ abstract contract ERC165 is IERC165 { /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol) pragma solidity ^0.8.0; import "../../utils/introspection/IERC165.sol"; /** * @dev Required interface of an ERC721 compliant contract. */ interface IERC721 is IERC165 { /** * @dev Emitted when `tokenId` token is transferred from `from` to `to`. */ event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. */ event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. */ event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /** * @dev Returns the number of tokens in ``owner``'s account. */ function balanceOf(address owner) external view returns (uint256 balance); /** * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function ownerOf(uint256 tokenId) external view returns (address owner); /** * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes calldata data ) external; /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. */ function approve(address to, uint256 tokenId) external; /** * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. */ function setApprovalForAll(address operator, bool _approved) external; /** * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function getApproved(uint256 tokenId) external view returns (address operator); /** * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} */ function isApprovedForAll(address owner, address operator) external view returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol) pragma solidity ^0.8.0; import "../IERC721.sol"; /** * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721Metadata is IERC721 { /** * @dev Returns the token collection name. */ function name() external view returns (string memory); /** * @dev Returns the token collection symbol. */ function symbol() external view returns (string memory); /** * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. */ function tokenURI(uint256 tokenId) external view returns (string memory); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (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 anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing 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 pragma solidity ^0.8.15; interface FeeSplitter { function proxySend(address to, uint256 amount) external; function balanceOf(address account) external view returns (uint256); }
{ "optimizer": { "enabled": true, "runs": 100 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "libraries": {} }
Contract Security Audit
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[{"inputs":[{"internalType":"uint256","name":"percentPerWeek","type":"uint256"},{"internalType":"address","name":"nftTokenAddress","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"inputs":[],"name":"MAX_STAKING_DURATION","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"ONE_WEEK","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getAvailableFunds","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"address_","type":"address"},{"internalType":"uint256","name":"tokenId_","type":"uint256"}],"name":"getAvailablePayout","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"week","type":"uint256"}],"name":"getBasePayoutForWeek","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getCurrentWeek","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"startWeek","type":"uint256"},{"internalType":"uint256","name":"endWeek","type":"uint256"}],"name":"getFundsForWeeksLowerBound","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"address_","type":"address"}],"name":"getIDsDoneStaking","outputs":[{"internalType":"uint256[]","name":"","type":"uint256[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"address_","type":"address"}],"name":"getNumStaked","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint32","name":"stakingDuration","type":"uint32"}],"name":"getShares","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"uint256","name":"week","type":"uint256"}],"name":"getSharesForWeek","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"address_","type":"address"},{"internalType":"uint256","name":"tokenId_","type":"uint256"}],"name":"getStakeInfo","outputs":[{"components":[{"internalType":"uint128","name":"stakingStartWeek","type":"uint128"},{"internalType":"uint32","name":"stakingDuration","type":"uint32"},{"internalType":"uint32","name":"paidDuration","type":"uint32"}],"internalType":"struct ANCApeStake.StakedApe","name":"","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"address_","type":"address"}],"name":"getStakedIDs","outputs":[{"internalType":"uint256[]","name":"","type":"uint256[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256[]","name":"tokenIDs","type":"uint256[]"}],"name":"multiPayoutRewards","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256[]","name":"tokenIDs","type":"uint256[]"},{"internalType":"uint32","name":"stakingDuration","type":"uint32"}],"name":"multiStake","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256[]","name":"tokenIDs","type":"uint256[]"}],"name":"multiUnstake","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"bytes","name":"","type":"bytes"}],"name":"onERC721Received","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"pure","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_tokenId","type":"uint256"}],"name":"payoutReward","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"splitterAddress","type":"address"}],"name":"setRewardSplitter","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"setStakingStart","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tenthPercentPerWeek_","type":"uint256"}],"name":"setTenthPercentPerWeek","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"uint32","name":"stakingDuration","type":"uint32"}],"name":"stake","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"stakingStart","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"tenthPercentPerWeek","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_tokenId","type":"uint256"}],"name":"unstake","outputs":[],"stateMutability":"nonpayable","type":"function"}]
Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
0000000000000000000000000000000000000000000000000000000000000014000000000000000000000000f853b0f7bc806d6067e42aeaa90d35c114adabfa
-----Decoded View---------------
Arg [0] : percentPerWeek (uint256): 20
Arg [1] : nftTokenAddress (address): 0xf853b0f7bC806D6067e42AEAA90D35C114ADABfA
-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000014
Arg [1] : 000000000000000000000000f853b0f7bc806d6067e42aeaa90d35c114adabfa
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Multichain Portfolio | 27 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.