ERC-721
Overview
Max Total Supply
277 INK
Holders
71
Market
Volume (24H)
N/A
Min Price (24H)
N/A
Max Price (24H)
N/A
Other Info
Token Contract
Filtered by Token Holder
Fragile Friends Editions: DeployerBalance
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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Contract Name:
OrderOfInk
Compiler Version
v0.8.17+commit.8df45f5f
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT // // // ββββββ*βwββ // ββββmKKβ£β ββ?ββ, // ,βÆββββ ββ ~. β7w, // ββββ ββ . βW // βββ ββββββββ, ' * // ββ¬ .~β#ββββ βββββWββ ^ ¼ // ββ .β` ,ββ' ,βββββββ `¬. ~ ββββ, ¼ \ // βU ,β ββ βββ ββββββββ ` β ββ%β t β // β,β` ββ ββ ββββββββββββ β ββββ // ¬β β^w βµ ββ ββββββββββββ > β ,βββ ββ // \ β "w β, ββ ββββββββββ ββ β ,Æββ β // β β β"w, β¼, ββwµ ,»ββ Aβ ,βββ Æ // \ ββ ¬"βΏββββ, ββββββ βpβββββ ,β // "β ββ ββββ7²%β²7ββββ ββ // βV βββ ββ β²β // βββ ββββ, ββ β÷²β // ¬βYwβ ¬ββ²²**βββ«βββββ²²ββ¬ // ββΞY*ββββββββ // // // The Order of Ink // Smart Contract by Ryan Meyers // beautifulcode.eth // // Generosity attracts generosity // The world will be saved by beauty // pragma solidity ^0.8.17; import "ERC721AQueryable.sol"; import "Ownable.sol"; import "ERC2981.sol"; import "draft-EIP712.sol"; import "ECDSA.sol"; import "RevokableDefaultOperatorFilterer.sol"; import "UpdatableOperatorFilterer.sol"; contract OrderOfInk is ERC2981, EIP712, ERC721AQueryable, Ownable, RevokableDefaultOperatorFilterer { /* *//////////////////////,ββββββββββ¬βββ /* *///////////////µeβQβββ«Ξ¦ββ¨βββ¨β¨ββββ¬βββββ©βββ¨ββββ /* *////////,β##βββββββ¬Oβ ' ^"^ββ¨βββ;;ββç'jββββ /* */////β#β¨β.ββ©βββ¬β <β '' '''β¨ββ^:ββββ βββββ /* *///ββ ''ΟββΟββ«β ' ' β¨βββββ^βββββ /* * .ββ^':β¬β¬βββ¬β©,µµββTéMβ€β, .. ..'..~. ββββββ^.'βjβ ββ /* * ββ^.βββ.]βββ βββββ-µββv#Οββ₯>"""ββ"^^""ββ=«, βββ.^Mββ£β~ /* * ββ.]β¬ββ₯ββ©β^7"µseβ^^^ββ¥β Οββ/w!βββ'β. "ªβ¬ββ@β€βββ /* *ββ'.βββ«ββ)Ξ΅ββ;;;,µµ¿:µµ,,ββͺβ¬7Ξ¦ββΞ΄ββΟ,~ .'.."β(ββJββββ /* *ββ^ββββββββββββ¬β¬βββ¨ββββΞ£bβͺµββ£ββ¨β¬ββ¦β β¬Gβ.,,.~''.~β>β«ββ’ββ¬βµ /* *β«ββ«βββ β¬ββ¨!βββ¡¡β©>!ββΞ#βͺβ¬βͺβββ β«ββ§ββ β¬β£β β β¡β"~',β¡β©.~^β,ββββ /* *^ββ«ββββ !β!]Äβ5β©β¦βµββββ₯β₯βββ«βββ£βββββββββ©βjβββββββ~.,ββ"β,jβ /* * /βββββββ"ββ#Ξββ;=ββ₯=¡β¨ββββ β¬ββββββββββ"ββββββββββββb/Ξ£βββ /* * /β«βββββββββ©ββββββ¬ββββββββββββββββββ«ββ ββββββββββββββ£β,β¨ββ /* * /ββββββΟβ©!ÅQβ β¬Ξ΄β©β«β¬βββ«β¬βββββββββββ£β¬ββ;βββββββββββββ¬βββββ> /* * /ββββββββββββββββββββββββββββββββ©β¬ΟΞΞ΅β¨βββββββββββ«βββββββ /* *///β¬β«ββββββ«β¬β¬βββββββββββββββββββββ!βββββ¨β¨βββββ .β£β⣬ββββ /* *///βββ«β¬ββββββ¬βββββββββββ«β£ββββββββ¬''.β"β~'jβ«*β\ ββ«β© ββββ£ /* *////:ββ£ββββΞ£β¨βββββββ¬βββββββ£β¬β£β¬β βΞµββ^;Qβββ^β^' ^ jββββ« /* */////Åβ β¬β£βββββ£ββ¬βββββββ£ββββββββ¬β¬ββjββ¨β₯βΞ΅ 1Ξβ£β£β βββ«β /* *///E//ββββ¬βββββββββββββββββββββββββββββê, ββββ Qβ© `^ββ /* *////R/E//βββ«βββββββββββββββββ¬β β βββ¨ββββββββββ]β β¬β β β β /* *///E/R/R//βββ¡¡ββ«βββββββββββ¬β¬β¬β ββ ββ¨ββββββββββββ¬ββββββ /* *////R/0/R///βββββββββββββββββ¬ββ¬ββββ¬~ βββββββββββββ βÆββ /* *///E/R/R/0/R/S/ββββββββββββ¬βββ¬β«β«βββββββββββββββββββ,β /* *////R/0///R////]ββββββββββββ«ββββββ,βββββββββββββββββ«β /* */////R/R//////'`ββββββββββββββββββ¬ββ ββ£ββββ¬β βββ=/ββ β /* *//////0/////////'β«ββββββββββββββββββββ¬ββββββ£β¬β ]ββββ- /* */error Paused();//βββββββββββββββββββββββββββββββ β¬ββ β . /* */error InvalidMintKey();///ββββββββββ βββββββββββββββββ© ¬ /* */error ExceedsMaxSupply();//β¬ββββMΞ¦Wββ«βββββββββ¬ββββ¬ββb /* */error ExceedsAllowance();//ββββββ ββββββ ββ β /* */error PublicSaleNotStarted();///ββββββ ββββββ¨βββ /* */error InsufficientAmountSent();///β ββββββββββββ /* */error NoMoreThanTwentyPerTransaction();//βββββ¬β /* */error WalletNotSender();//////////////////ββ // *//////////////////////////////////////// /* C , */ /* O β β */ address private constant _TEAM = 0x5e5A5450548829Ad30B10Bcb81c4Cf5Fb609FEff; /* N βββ */ uint public constant SESSION_ONE_BLACK_PRICE = 0.08 ether; /* S β«β ββ */ uint public constant SESSION_ONE_GOLD_PRICE = 0.4 ether; /* T βββ βββββ */ uint public constant SESSION_TWO_BLACK_PRICE = 0.123 ether; /* A ββββββ β */ uint public constant SESSION_TWO_GOLD_PRICE = 0.5 ether; /* N ββ£β£β£β£β£β¬ββ ββββ */ uint private constant _maxSupply = 4444; /* T ββ£β£β£β£β£β£ ββ ββ¦ββββ */ uint private constant _maxGoldSupply = 67; /* S ββ£β£β£β¬ββ£ β β */ uint private constant _teamBlackMints = 150; /* ββ£β£β£β£β¬ββ | β«ββββC */ uint private constant _teamGoldMints = 10; /* ββ£β£β£β£β£β£wβ=,β«βββββ */ /* K ββ£β£β£β£ββ ββββββ ββ */ /* E ββ£β£β£β¬βββ β€ β βÆ^ */ struct MintKey { /* Y ββ£β£β£β£β£β¬β= βͺβββ¦ββββ */ address wallet; /* S ,βββ¬ββ¬ββ£ ββββ«Ξ,ββββ */ uint8 free; /* 4β¬Æβ¬βββββββ, β« */ uint8 allowed; } /* Æβ¬ββ¬ββββ©ββ©βββββµβ */ bytes32 private constant MINTKEY_TYPE_HASH = keccak256( /* ββββ βββββ */ "MintKey(address wallet,uint8 free,uint8 allowed)"); /* ββ©Xβ βββββ */ /* ββ¬β⬻ «β«ββββ */ struct CombineKey {uint256[] tokenIds;} /* ββ¬ββÆβ*βββββββ β */ bytes32 private constant COMBINEKEY_TYPE_HASH = keccak256( /* β¨ββ¨ββββββ β */ "CombineKey(uint256[] tokenIds)"); /* ,,ββ«ββββ,, */ /* V ,Οββ β β β β β«β β β β β β β β ββ¦, */ /* A βåβ β β β β β β β β ββ β β β β β β β β β β β ββ */ address private _signer; /* R Οβ β β β β β β β β β β β ββ β β β β β β β¬ββ β β β β β β */ address private _receiver; /* S ββ β β β β β β β β β β β β β ββ©β©β©βββββ¬β¬β¬β¬β¬ββββββ */ /* Οβ β β β β β β β β β β©β β βββ ββ β β β β β β β β β β¬β¬ */ bool public paused = true; /* Οβ β β β β β β β β β βββ ^β β β β β β β β β β β¦ */ string public baseURI; /* ]β β β β β β β β β β βββ ββ β β β β β β β β β */ uint8 public session = 1; /* β β β β β β β β β β ββ ββ β β β β β β β β */ uint private _goldMinted = 0; /* β β β β β β β β β β β ]β β β β β β β β β */ /* β β β β β β β β β Ξ΅ jβ ]β β β β β β β β β */ /* ββ β β β β β β β β ββ β β β β β β β β β β */ constructor( /* β β β β β β β β β β β β β β β β β β β β β */ string memory name, string memory symbol, /* ββ β β β β β β β β β β ,β ββ β β β β β β β β β β */ address signer, address receiver /* C ββ β β β β β β β β β β βββββ ,,βββ β β β β β β β β β β " */ ) ERC721A(name, symbol) EIP712(name, "1") { /* O ββ β β β β β β β β βββ ββββ β β β β β β β β β β β β β β β */ _signer = signer; _receiver = receiver; /* N `ββ β β β β β β βββ ββ ββββ β β β β β β β β β β β */ _setDefaultRoyalty(receiver, 1000); /* S ββ©β β β β βββ ββ β β ββ«β β β β β β β β©β */ baseURI = "https://bafybeidmchhjl2nraifqwymp44s3vaemvewa5f65o5gpn6qztjliryadle.ipfs.nftstorage.link/"; /* T ββββ¬ββ ββ β β β β β β β©ββ */ /* R T β βµ */ _goldMinted += _teamGoldMints; /* U E M β β */ _mintERC2309(_TEAM, _teamGoldMints); /* C A I βββ */ _setExtraDataAt(_startTokenId(), 1); /* T M N ββ */ _mintERC2309(_TEAM, _teamBlackMints); /* O T β« */ } /* R S β */ // , // "Ξ΄β₯ Οβ§ββ // ,,,,βββ¦ββββββββ, // ,β¦ββββ¬β¬β£β£β£βββ£β«βββ«βββββββββββββ¬β β¬ββ¬β¬βββββ¦ββ // ,ββββββ¬β¬β¬ββββββββ¬ββββββMINTββββββββ¬ββ©β¬ββββ£ββββββ // ββ¬βββββ¬ββββββββ β£ββββββMETHODββββββββ¬βββββββ β£β«ββββ# // βββββ¬ββββ£β£β¬β£ββ¬βββ«β£ββ£β¬βββββββββ¬ββ£β¬βββ¬ββ¬β£βββββββββββÖ // βββββββββ£ββββββββββββββββββ£ββββββββββββββ βββββ // ββββββ£β#β«ββββ«β βββ¬ββββββββββββ«βββββ£ββββ // βββ’βββββ£ββββββββββββ£ββββ¬βββββ // ββ£βββ ββββ¬ββ₯β¨ βββ©βββββββ¬βββ // ββββββ ββββββββββ // * For the sake of transparency, the code for the mint method * // // * will be unadorned. Please reach out if anything seems * // // * unclear or un-readable or insecure(!) Twitter: @sreyeMnayR * // // function getInked( bytes calldata signature, // a typed message (EIP712) signed with a secret private key MintKey calldata key, // a struct representing the message uint8 howManyBlack, // how many editions of 8 or 15 to mint uint8 howManyGold, // how many 1 of 1 editions to mint uint24 choiceData // a packed integer representing artist preference ) external payable { if(paused) revert Paused(); uint256 nextTokenId; uint8 howMany = howManyGold + howManyBlack; // if there are free tokens in the mint key, check if they're already minted // if not, add them to the "howMany" variable. if(0<key.free){ howMany += key.free - uint8(_getAux(msg.sender)); } // if there aren't enough tokens left to fulfill the order... sorry, bye! if (totalSupply() + howMany > _maxSupply) revert ExceedsMaxSupply(); // if not enough $ETH was sent with the transaction... sorry, bye! if (msg.value < ( (blackPrice() * howManyBlack) + (goldPrice() * howManyGold) )) revert InsufficientAmountSent(); // the first two minting sessions require a mint key (allow list) if (session < 3){ // if the sender has already minted their allotment... sorry, bye! if (_numberMinted(msg.sender) + howMany > key.allowed) revert ExceedsAllowance(); // if the sender isn't the wallet in the mint key... sorry, bye! if (msg.sender != key.wallet) revert WalletNotSender(); // if the signed, typed message doesn't match the data sent... sorry, bye! if (!autoclave(signature, key)) revert InvalidMintKey(); // if there are free tokens to claim... if (0 < key.free) { uint64 aux = _getAux(msg.sender); // if free tokens haven't yet been minted... if (aux < key.free) { // set the aux before minting to avoid reentrancy attacks _setAux(msg.sender, key.free); // add the free tokens to the black tokens being minted howManyBlack += uint8(key.free - aux); } } } else { // no more than 10 of any tier per mint transaction in public sale if(howManyGold > 10) revert ExceedsAllowance(); if(howManyBlack > 10) revert ExceedsAllowance(); } // if the mint includes editions of 8/15... if(howManyBlack > 0){ // make sure there are enough black tokens remaining if (howManyBlack > blackRemaining()) revert ExceedsMaxSupply(); // store the next tokenId. can't write choice data until it's been initialized. nextTokenId = _nextTokenId(); // mint the tokens _mint(msg.sender, howManyBlack); // record the artist choice data _setExtraDataAt(nextTokenId, choiceData); } // if the mint includes 1 of 1 editions... if(howManyGold > 0){ // make sure there are enough gold tokens remaining if (howManyGold > goldRemaining()) revert ExceedsMaxSupply(); // store the next token id nextTokenId = _nextTokenId(); // increment the number of gold tokens minted _goldMinted += howManyGold; // mint the gold tokens _mint(msg.sender, howManyGold); // include the choice data (+1, as the first bit indicates the tier) _setExtraDataAt(nextTokenId, choiceData+1); } // That's it! } /* ,,,,,,, /* ,β@ββ£β¬β¬β£β¬β¬β¬β¬β¬β¬β¬β¬β¬β¬βββ*/ /* ,#β¬β¬β β β©β©β©ββββ β©β βββββββββ©β©β β,*/ function finalSession( /* ,β β©βββββββββββββββββΟββ₯Äβββ©β β¬β¬β¬ββ*/ bytes calldata signature, /* ΟβΞβ!ββββββββββββ₯βββββββββββββ¬β©ββββ¬β£*/ uint256[] calldata tokenIds /* ΟΞβ ';β©''Ξ΅β‘βΟβββ ''ββ#βββββ''''~!ββββ*/ ) external { /* ;ββ ' '~ββ²` ',Æββ. ' ' ' ' ''!β*/ if (!autoclaveCombine( /* βββ ,β© ,ββ;;;β,,.,β,βββββµβββ,,,,β*/ signature, tokenIds /* βββ. .;Ξ΅'',βββ¬β β¬βββββββββββββββ¬ββ€ββββββββ */ )) revert InvalidMintKey(); /* βββ;>^ββ£ββ#βΞβββ β β¬β£βββββββββββββ¬β©β©β© ^ ,β¬*/ /* Οββwµ βββ«βββ;Οββ β β¬ββββββββ¬β;βββ«β. .,,;Οβ β β */ uint howMany = tokenIds.length; /* 'ββββ£Q'¡βββββ£ββββ£β¬βββββββββββ«ββ"¥β’ββββββββ */ for (uint i = 0; i != howMany; ++i){ /* Ξβββ«βββ ββββ¬β«βββββββββββ ββββ β¬β¬β¬β£ββββββββ β*/ _burn(tokenIds[i], true); } /* ββÅββ¡ββββββ£ββββββββµβββµ βββ¬ββββ¬β£ββββββ */ /* ββββββ]ββββ β«ββ«β β β«Οββ β¬βΟβββββ¬β¬β¬β¬ββββ */ uint nextTokenId = _nextTokenId(); /* βββββββββ«βββ£ββ¬βββββββββββ¬β¬β¬β¬β¬β β¬β¬ββββ¬*/ _mint(msg.sender, 1); /* β#βββ¬βββββββββββββββββββββββββββββ¬β¬β£β£*/ _setExtraDataAt(nextTokenId, 1); /* βββββββ β£ββ¬βββ¬ββ¡ββββββ«β«β£β¬β¬β¬β£β«β£β«β¬β¬β¬β¬β β«β¬*/ } /* β£ββ«βββββ ββ¬β¬β¬β¬ββ β β Οβ¦ββββββββββ βββ β¬β ββ¬ββ©*/ /* ββ¬β’β¬β«ββ©β¬βββββββββββββββββ¬β£ββ¬β£β«β£β¬β¬β«ββββ*/ /* ββ¬βββ¬ββ,βββββββββββββββ£βββββββββ ,ββββββββ*/ // βββββ£β¬βββββββ£β¬β¬βββββββ«β’β¬ββββββββ£β¬β¬βββββββ*/ // ββββββββββββ£βββββ£ββββ£βββββββββββββββββ*/ // βββββββββββββββββββββ /* ,ββÆββββββββββββ, */ /* ββββ¬β¬β β©βββββββββββββ β¬βββ, */ function autoclave ( /* ββββ¬βΞΞββββββ!!!!!!βββββΞββ©β¬ββ */ bytes calldata signature, /* βββ¬βΞβββ:β".β'^'.βµ^'.,""":!!βββ©β¬βµ */ MintKey calldata key /* ββββββ"^'^ββββββ''ββ ββββββ'''"^"!βββ¬β */ ) public view returns (bool) { /* βββββ^'''' ββββ ββββ '''^':βββ£β */ bytes32 digest = _hashTypedDataV4( /* ββββ^''. ββββββββββββ ,µ '^β'ββ«µ */ keccak256(abi.encode( /* ββ¬ββ'^^. ββββ«βββββββββββββββ '.β'ββ */ MINTKEY_TYPE_HASH, /* βββ'^^.. ββββββbΟββββββββββββββ .'''^!β β */ msg.sender, /* jβββ~.~. .ββββββββββββ :ββββββββJ ''~^Οβ */ key.free, /* βββ~.^~' ββββββββββββ¼Qββββββ«β ''^:ββ */ key.allowed ))); /* βββ.^~. βββββββ~βββββββββ ββ .^.]ββ */ return ECDSA.recover( /* β¬ββ.^~ µββββββÿ¿ ^mββββββββββ¬-ββ .'.:ββ β */ digest, signature /* ββββ©'^.' βQββββββ> β''β₯ββββββµ]β ''ββββ */ ) == _signer; } /* ββββ'^.'. ββββββββ,Ξ£ββββbββ'β«β½β¨ ..'^β;ββ */ /* ββββ'^.~ βpβββββ " .ββ'.ββ¦βββ© ...'ββΟβ */ function autoclaveCombine( /* ββ¬βββ^... βµββββββββ βbβββββ ..,βββ β© */ bytes calldata signature, /* C β ββ-^... βµ ββββββ;ββββββ© .....:Οββ */ uint256[] calldata tokenIds /* H S ββββ^... βµ ββββββββββ© .'..:Οββ¨ */ ) public view returns (bool) { /* E I βββ'β^~' βµ ^βββββ β© '.,.ββββ */ bytes32 digest = _hashTypedDataV4( /* C G M β β~\"^ β«,,"β¥β,ββ ...,^]β b */ keccak256(abi.encode( /* K N E βββ©ββ.~' ]β βæµ ββ . .^β~Οβ */ COMBINEKEY_TYPE_HASH, /* E S ββ:β''~..βββ£β,βββT. '.ββ,ββ */ keccak256(abi.encodePacked(tokenIds))))); /* E D S ββ β\β'^' ββββ¬βββ£β '..^β:Οβ£T */ return ECDSA.recover( /* I A βββββββββββ«β£β«βWβββββββββ */ digest, signature /* P T G β«βββββ¬βββββββββ β«ββββββµ */ ) == _signer; } /* 7 Y E β«ββ¬β¬βQ,βββββββ«β₯ββββββ */ /* 1 P S ββββββββ«βββββΟβ«ββββββµ */ /* 2 E βββββββΞ΄βββββΞββ«ββββββ */ /* D ββββββ¬βΞβ«βββββ=β ββββββ */ /* βββββ£æsβ£ββββG-ββββββββ */ /* βββββββ¨ββ«ββββL.β ββββββ */ /* βββββββββ¬β¬β¬β¬β£β£βββββββ */ /* βββββββββββββββββ */ /* βββββββββββ */ /* βββββ */ /* .ββ*/ /* ,β"^βΏ β¬* β */ function setDefaultRoyalty( /* ,.β j β β ,β\``*/ address receiver, uint96 points /* Ξ΅` ]ββ,⨬}J β¬'\ */ ) external onlyOwner { /* βç j β {β΄β*, ,Ξ```β*/ _setDefaultRoyalty(receiver, points); /* '7TββΏβ-β«-βββ ,ββ */ _receiver = receiver; } /* β β βY `β Ζ β \ ,*/ /* β .βββ.,β \ */ function startNextSession() onlyOwner external { /* */ session++; } /* Ξ */ /* A β */ function withdraw() public payable {(bool success, ) = payable( /* D µ */ _receiver).call{value: address(this).balance}(""); /* M ,,β , */ require(success); } /* I β pβ‘ */ /* N ⬬¬β§β¬¬`*/ function tattooReveal(string memory newBaseURI /* β */ ) public onlyOwner { /* β j β */ baseURI = newBaseURI; } /* β β β */ /* β β µ */ function eject() public onlyOwner { /* b β Ξ */ if (blackRemaining() > 0) { /* j β β */ if (blackRemaining() > 250) { _mint(_TEAM, 250); } /* β β β */ else { _mint(_TEAM, blackRemaining()); }} /* β β j */ if(goldRemaining() > 0) { /* j Ξ */ uint _goldRemaining = goldRemaining(); /* β β β */ _goldMinted += _goldRemaining; /* β j \ */ uint nextTokenId = _nextTokenId(); /* β β p */ _mint(_TEAM, _goldRemaining); /* \ ,*/ _setExtraDataAt(nextTokenId, 1); }} /* \ ,*/ /* '"¬βββ¬`'*/ function pauseSwitch() public onlyOwner { paused = !paused; } /* ,βββββββββββ₯ */ /* H ββββββββββββββββ */ function goldRemaining() public view returns (uint256) { /* E β£ββββββββ£βββββββββ */ return _maxGoldSupply - _goldMinted; } /* L β ββββββ¬β£Åβββ ββββββββ */ /* P ββββββββββββββββββββ¬β */ function blackRemaining() public view returns (uint256) { /* E jββ¬ββëββ, ,«TêÉβ«β«β β */ return _maxSupply - totalSupply() - goldRemaining(); } /* R ββ β¬βββββββ¬ β βββ©β«βββ£β β */ /* S βββ ββ¬βΞ²βββ,ββ"²ββ¬ββ ββ */ function goldPrice() public view returns (uint256) { /* ββ β¬β¬β¬Ξ΅ çβΟβ ,β£β£β β β */ if(session > 1) return SESSION_TWO_GOLD_PRICE; /* ββ£β¬β'ββ ββββ ;ββββ£β¬β */ return SESSION_ONE_GOLD_PRICE; } /* βββββ, *Ξ¦ββββββ βββββ */ /* βββββββ ββββ βββββββ */ function blackPrice() public view returns (uint256) { /* ββββββββββ¦β₯β₯β¦#ββββββββ */ if(session > 1) return SESSION_TWO_BLACK_PRICE; /* ββββββ β^ Οβββββ */ return SESSION_ONE_BLACK_PRICE; } /* æΞ¦βββQβ©β¼ 6β‘βbβ¬ββββ₯ */ /* β«,¥β¬ÅΟβ÷Ξ¼¬ β¥β}Ξ}Åβ¬Mçβ */ function mintInfo() public view returns ( /* β-ββj¼mββ,` "ββæbMΞββ©-β’ */ uint256, uint256, uint256, uint256, uint256) { /* ²,ββββ₯,"β ¬ ."gββ#β.ó */ return ( /* X VÜΞ΅) β¬ Ο,ÜΞ Æ */ goldRemaining(), blackRemaining(), /* *,`βββ βbβ βÅ^,<β */ goldPrice(), blackPrice(), session /* 'βqµ µβ` */ );} // /* β */ /* ββ */ /* βµ */ /* β« */ /* β ,..--.., */ /* β ,æOΞβ¬```` ¬~ `- */ /* β ,βββ¨ ` . */ /* β βββ βββ `, */ /* βββ Aββ ββββββββ β«β */ /* ¬ - β ,β β« βββββββββ βββ */ /* ' Æ β ββββββββββ ββββ */ /* β , ' β© β ' , 'βββββββββββ βββββ */ /* Ξ ,-βÆΞβββ¨ β / .Οβββββββββββββββββ */ /* β β βββ. ''β »[βΟÄβ ββββββββββββββββ */ /* β«β ,β β ..βββΟβ β£β¬βββββββββββββββ */ /* ββ β:. ' β₯βββββββββββββββββββββ */ /* ' .,»βΏ~Ζ β«βββββββββββββββββββ©β©ββββ */ /* β -/Ç ''.β~ββββββββββββββ«ββββββ β β" */ function _startTokenId() internal pure override returns (uint256) { /* β '"²,.β©,βββββββββββββββ¬ββ¬βββββ */ return 1; } /* µ ββ©β-βββββββββββββββββββ β β */ /* ββββββ;»βββββββββββββββ¬βββββ β */ function _extraData( /* ββββββββββββββββ¬β¬β’β¬ββββ¬ββββ */ address, address, uint24 previousExtraData /* .,Οβββββββ€ββ€ββ₯ββΞββ«βββββββ */ ) internal pure override returns (uint24) { /* ]βΟΞββ₯ββββ>β7²β βΟβ βββββββ */ return previousExtraData;} /* `ββββ¬ββββ¨ββ»"'ββββ¬βββββββ */ /* βββββββββÜβΟββ¬βββββββΞ */ function supportsInterface(bytes4 interfaceId /* ,. β¬ββββββΟβ β¬ββββββ ββ */ ) public view virtual override(IERC721A, ERC721A, ERC2981) returns (bool) { /* \ βββ«β£β£βββββββββ */ return ERC721A.supportsInterface(interfaceId) || /* O ~²ββββββββββββββββ β */ ERC2981.supportsInterface(interfaceId);} /* V βββ ββββ β */ /* E ^ β«βββ βµ */ function explicitOwnershipsOfAll( /* R ββββ ββ */ ) external view returns (TokenOwnership[] memory) { /* R ββββ ββ */ unchecked { /* I ββββ ββ */ uint256 tokenIdsLength = _nextTokenId()+_startTokenId(); /* D ββββ ββ */ TokenOwnership[] memory ownerships = new TokenOwnership[](tokenIdsLength); /* E βββ ββ */ for (uint256 i=_startTokenId(); i != tokenIdsLength; ++i) { /* S ββ ββ£ */ ownerships[i] = explicitOwnershipOf(i); } /* ββ bββ */ return ownerships; }} /* ββ ββ«β */ /* ββ βΌβ«β */ function getAux(address _owner) external view returns (uint64) { /* βµβββ */ return _getAux(_owner); } /* jβ jββ */ /* ββjββ */ function _baseURI() internal view override returns (string memory) { /* ββjβ«β */ return baseURI; } /* */ //* */f u n c t i o n noRagrets(,ββββββββββββ //* */fu n c ti on noRagrets(βββββββββββββββββββ, //* */fun ctio n noRagrets(βββββββββββββββββββββββ //* */function noRagrets(Æβββββββββββββββββββββββββ //* */function noRagrets(]ββββββββββββββββββββββββββββββ //* */function noRagrets(βββββββββββββββββ£βββββββ£ββββββββµ //* */function noRagrets(βββββββββββββββββ `βββββ£ββββββµ //* */function noRagrets(βββββββββββ¬"²t -Ξ΅β€oββ©βββ£βββββ //* */function noRagrets( ββββββββ ββ. ' ββββββββ //* */fun ctio n noRagrets(ββββββ ^ββββ ¬ββ.> βββββββ //* */fu n c ti on noRagrets(βββ β `. ββββββb //* */fu n c t i o n noRagrets( <"""β₯. βββ£βββ //* */fu n c t i on noRagrets(β Ξ¦β‘β¦β¦β¦β¦β£βΏβ ' ββββ /** */function/* */noRagrets(//(β ,, ββ //* */f u n c t i o n noRagrets(L , ^ /** */uint256/*** ***/tokenId//(β¬β `-, /`ββæ //* */f u n c ti o n noRagrets(@β¬β¬β : |- β©β] β| Æββ¬β£β¬µ /** */)/** **/public/** **/{//ββ¬β¬β£ββ β »' βββ¬β¬β¬β£ //* */ function noRagrets(//Æβ β¬β¬β£ β¬β¬β¬β¬β¬β¬β /** */_burn( //_burn( //,ββ¬β¬β¬β¬β£ ββ β¬β¬β¬β¬β¬β¬ //* */function noRagrets(β¬ββ¬β¬β¬β¬β¬β¬β£ {ββ¬β¬β¬β¬β¬β¬β¬β /** */tokenId,/** ***///βββββ¬β¬β¬β£β¬β β βββ¬β¬β¬β¬β¬β¬β //* */function noRagrets(ββ¬β¬β¬β£ββ β ββ ββββ¬β¬β¬β β /** */true);}/* *///βÆββ β¬β¬β¬β¬β β ββ βͺ β βββ¬β ββ //* *//**//**/βββ¬β¬β¬βββ ββ¬β β Ç β’βββ βββ¬βββ //* *//**/βÆββ¬β¬β¬β β©ββ β β ,t^ βββ ββββ¬ββ //* */ ββββββββ Ζββ β© kβ ,ββ' β β ββββ //* */ É Æ ,ββ j `βºβββ-ββJβ^ β β ββ //* */ β β{β β Ξ ββ //* */β .βββK* β 𝕹𝕺𝕺𝕽𝕽𝔄𝕲 𝕲𝕽𝕰𝕰𝔗𝔗𝕾 β β " //* */β ,β > .β*- 𝓝 𝓞 𝓡 𝓐 𝓖 𝓡 𝓔 𝓣 𝓢 [ ,β,β p //* */β ,β - . ,β.β 𝕹𝕺𝕽𝔄𝕲𝕽𝕰𝔗𝕾 /β^ββ `w //* */β~βΏβΏβΏ~^β~ββΏ² ββ~βΏβ ββΏβΏβΏβΏβΏβΏβΏβΏβΏβΏβΏ²²²²²βΏβΏβΏ~~~²~~~~~ β΄~~~β΄β΄~~~~ββ΄~~~~~~~~~~~~β // Below are some overrides required by OpenSea's Operator Filter Registry /** * @dev See {IERC721-setApprovalForAll}. * In this example the added modifier ensures that the operator is allowed by the OperatorFilterRegistry. */ function setApprovalForAll(address operator, bool approved) public override(ERC721A, IERC721A) onlyAllowedOperatorApproval(operator) { super.setApprovalForAll(operator, approved); } /** * @dev See {IERC721-approve}. * In this example the added modifier ensures that the operator is allowed by the OperatorFilterRegistry. */ function approve(address operator, uint256 tokenId) public override(ERC721A, IERC721A) onlyAllowedOperatorApproval(operator) { super.approve(operator, tokenId); } /** * @dev See {IERC721-transferFrom}. * In this example the added modifier ensures that the operator is allowed by the OperatorFilterRegistry. */ function transferFrom(address from, address to, uint256 tokenId) public override(ERC721A, IERC721A) onlyAllowedOperator(from) { super.transferFrom(from, to, tokenId); } /** * @dev See {IERC721-safeTransferFrom}. * In this example the added modifier ensures that the operator is allowed by the OperatorFilterRegistry. */ function safeTransferFrom(address from, address to, uint256 tokenId) public override(ERC721A, IERC721A) onlyAllowedOperator(from) { super.safeTransferFrom(from, to, tokenId); } /** * @dev See {IERC721-safeTransferFrom}. * In this example the added modifier ensures that the operator is allowed by the OperatorFilterRegistry. */ function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory data) public override(ERC721A, IERC721A) onlyAllowedOperator(from) { super.safeTransferFrom(from, to, tokenId, data); } /** * @dev See {Ownable-owner}. * Thanks, OpenSea */ function owner() public view override(Ownable, UpdatableOperatorFilterer) returns(address) { return super.owner(); } } // // Congratulations, you made it to the end of the Smart Contract! // Go mint a fork and feed someone in New Orleans: https://forkhunger.art //
// SPDX-License-Identifier: MIT // ERC721A Contracts v4.2.2 // Creator: Chiru Labs pragma solidity ^0.8.4; import "IERC721AQueryable.sol"; import "ERC721A.sol"; /** * @title ERC721AQueryable. * * @dev ERC721A subclass with convenience query functions. */ abstract contract ERC721AQueryable is ERC721A, IERC721AQueryable { /** * @dev Returns the `TokenOwnership` struct at `tokenId` without reverting. * * If the `tokenId` is out of bounds: * * - `addr = address(0)` * - `startTimestamp = 0` * - `burned = false` * - `extraData = 0` * * If the `tokenId` is burned: * * - `addr = <Address of owner before token was burned>` * - `startTimestamp = <Timestamp when token was burned>` * - `burned = true` * - `extraData = <Extra data when token was burned>` * * Otherwise: * * - `addr = <Address of owner>` * - `startTimestamp = <Timestamp of start of ownership>` * - `burned = false` * - `extraData = <Extra data at start of ownership>` */ function explicitOwnershipOf(uint256 tokenId) public view virtual override returns (TokenOwnership memory) { TokenOwnership memory ownership; if (tokenId < _startTokenId() || tokenId >= _nextTokenId()) { return ownership; } ownership = _ownershipAt(tokenId); if (ownership.burned) { return ownership; } return _ownershipOf(tokenId); } /** * @dev Returns an array of `TokenOwnership` structs at `tokenIds` in order. * See {ERC721AQueryable-explicitOwnershipOf} */ function explicitOwnershipsOf(uint256[] calldata tokenIds) external view virtual override returns (TokenOwnership[] memory) { unchecked { uint256 tokenIdsLength = tokenIds.length; TokenOwnership[] memory ownerships = new TokenOwnership[](tokenIdsLength); for (uint256 i; i != tokenIdsLength; ++i) { ownerships[i] = explicitOwnershipOf(tokenIds[i]); } return ownerships; } } /** * @dev Returns an array of token IDs owned by `owner`, * in the range [`start`, `stop`) * (i.e. `start <= tokenId < stop`). * * This function allows for tokens to be queried if the collection * grows too big for a single call of {ERC721AQueryable-tokensOfOwner}. * * Requirements: * * - `start < stop` */ function tokensOfOwnerIn( address owner, uint256 start, uint256 stop ) external view virtual override returns (uint256[] memory) { unchecked { if (start >= stop) revert InvalidQueryRange(); uint256 tokenIdsIdx; uint256 stopLimit = _nextTokenId(); // Set `start = max(start, _startTokenId())`. if (start < _startTokenId()) { start = _startTokenId(); } // Set `stop = min(stop, stopLimit)`. if (stop > stopLimit) { stop = stopLimit; } uint256 tokenIdsMaxLength = balanceOf(owner); // Set `tokenIdsMaxLength = min(balanceOf(owner), stop - start)`, // to cater for cases where `balanceOf(owner)` is too big. if (start < stop) { uint256 rangeLength = stop - start; if (rangeLength < tokenIdsMaxLength) { tokenIdsMaxLength = rangeLength; } } else { tokenIdsMaxLength = 0; } uint256[] memory tokenIds = new uint256[](tokenIdsMaxLength); if (tokenIdsMaxLength == 0) { return tokenIds; } // We need to call `explicitOwnershipOf(start)`, // because the slot at `start` may not be initialized. TokenOwnership memory ownership = explicitOwnershipOf(start); address currOwnershipAddr; // If the starting slot exists (i.e. not burned), initialize `currOwnershipAddr`. // `ownership.address` will not be zero, as `start` is clamped to the valid token ID range. if (!ownership.burned) { currOwnershipAddr = ownership.addr; } for (uint256 i = start; i != stop && tokenIdsIdx != tokenIdsMaxLength; ++i) { ownership = _ownershipAt(i); if (ownership.burned) { continue; } if (ownership.addr != address(0)) { currOwnershipAddr = ownership.addr; } if (currOwnershipAddr == owner) { tokenIds[tokenIdsIdx++] = i; } } // Downsize the array to fit. assembly { mstore(tokenIds, tokenIdsIdx) } return tokenIds; } } /** * @dev Returns an array of token IDs owned by `owner`. * * This function scans the ownership mapping and is O(`totalSupply`) in complexity. * It is meant to be called off-chain. * * See {ERC721AQueryable-tokensOfOwnerIn} for splitting the scan into * multiple smaller scans if the collection is large enough to cause * an out-of-gas error (10K collections should be fine). */ function tokensOfOwner(address owner) external view virtual override returns (uint256[] memory) { unchecked { uint256 tokenIdsIdx; address currOwnershipAddr; uint256 tokenIdsLength = balanceOf(owner); uint256[] memory tokenIds = new uint256[](tokenIdsLength); TokenOwnership memory ownership; for (uint256 i = _startTokenId(); tokenIdsIdx != tokenIdsLength; ++i) { ownership = _ownershipAt(i); if (ownership.burned) { continue; } if (ownership.addr != address(0)) { currOwnershipAddr = ownership.addr; } if (currOwnershipAddr == owner) { tokenIds[tokenIdsIdx++] = i; } } return tokenIds; } } }
// SPDX-License-Identifier: MIT // ERC721A Contracts v4.2.2 // Creator: Chiru Labs pragma solidity ^0.8.4; import "IERC721A.sol"; /** * @dev Interface of ERC721AQueryable. */ interface IERC721AQueryable is IERC721A { /** * Invalid query range (`start` >= `stop`). */ error InvalidQueryRange(); /** * @dev Returns the `TokenOwnership` struct at `tokenId` without reverting. * * If the `tokenId` is out of bounds: * * - `addr = address(0)` * - `startTimestamp = 0` * - `burned = false` * - `extraData = 0` * * If the `tokenId` is burned: * * - `addr = <Address of owner before token was burned>` * - `startTimestamp = <Timestamp when token was burned>` * - `burned = true` * - `extraData = <Extra data when token was burned>` * * Otherwise: * * - `addr = <Address of owner>` * - `startTimestamp = <Timestamp of start of ownership>` * - `burned = false` * - `extraData = <Extra data at start of ownership>` */ function explicitOwnershipOf(uint256 tokenId) external view returns (TokenOwnership memory); /** * @dev Returns an array of `TokenOwnership` structs at `tokenIds` in order. * See {ERC721AQueryable-explicitOwnershipOf} */ function explicitOwnershipsOf(uint256[] memory tokenIds) external view returns (TokenOwnership[] memory); /** * @dev Returns an array of token IDs owned by `owner`, * in the range [`start`, `stop`) * (i.e. `start <= tokenId < stop`). * * This function allows for tokens to be queried if the collection * grows too big for a single call of {ERC721AQueryable-tokensOfOwner}. * * Requirements: * * - `start < stop` */ function tokensOfOwnerIn( address owner, uint256 start, uint256 stop ) external view returns (uint256[] memory); /** * @dev Returns an array of token IDs owned by `owner`. * * This function scans the ownership mapping and is O(`totalSupply`) in complexity. * It is meant to be called off-chain. * * See {ERC721AQueryable-tokensOfOwnerIn} for splitting the scan into * multiple smaller scans if the collection is large enough to cause * an out-of-gas error (10K collections should be fine). */ function tokensOfOwner(address owner) external view returns (uint256[] memory); }
// SPDX-License-Identifier: MIT // ERC721A Contracts v4.2.2 // Creator: Chiru Labs pragma solidity ^0.8.4; /** * @dev Interface of ERC721A. */ interface IERC721A { /** * 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(); /** * 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(); /** * The `quantity` minted with ERC2309 exceeds the safety limit. */ error MintERC2309QuantityExceedsLimit(); /** * The `extraData` cannot be set on an unintialized ownership slot. */ error OwnershipNotInitializedForExtraData(); // ============================================================= // STRUCTS // ============================================================= struct TokenOwnership { // The address of the owner. address addr; // Stores the start time of ownership with minimal overhead for tokenomics. uint64 startTimestamp; // Whether the token has been burned. bool burned; // Arbitrary data similar to `startTimestamp` that can be set via {_extraData}. uint24 extraData; } // ============================================================= // TOKEN COUNTERS // ============================================================= /** * @dev Returns the total number of tokens in existence. * Burned tokens will reduce the count. * To get the total number of tokens minted, please see {_totalMinted}. */ function totalSupply() external view returns (uint256); // ============================================================= // IERC165 // ============================================================= /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * [EIP section](https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified) * to learn more about how these ids are created. * * This function call must use less than 30000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); // ============================================================= // IERC721 // ============================================================= /** * @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`, * 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 be 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, bytes calldata data ) external; /** * @dev Equivalent to `safeTransferFrom(from, to, tokenId, '')`. */ function safeTransferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Transfers `tokenId` 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); // ============================================================= // IERC721Metadata // ============================================================= /** * @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); // ============================================================= // IERC2309 // ============================================================= /** * @dev Emitted when tokens in `fromTokenId` to `toTokenId` * (inclusive) is transferred from `from` to `to`, as defined in the * [ERC2309](https://eips.ethereum.org/EIPS/eip-2309) standard. * * See {_mintERC2309} for more details. */ event ConsecutiveTransfer(uint256 indexed fromTokenId, uint256 toTokenId, address indexed from, address indexed to); }
// SPDX-License-Identifier: MIT // ERC721A Contracts v4.2.2 // Creator: Chiru Labs pragma solidity ^0.8.4; import "IERC721A.sol"; /** * @dev Interface of ERC721 token receiver. */ interface ERC721A__IERC721Receiver { function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); } /** * @title ERC721A * * @dev Implementation of the [ERC721](https://eips.ethereum.org/EIPS/eip-721) * Non-Fungible Token Standard, including the Metadata extension. * Optimized for lower gas during batch mints. * * Token IDs are minted in sequential order (e.g. 0, 1, 2, 3, ...) * starting from `_startTokenId()`. * * Assumptions: * * - An owner cannot have more than 2**64 - 1 (max value of uint64) of supply. * - The maximum token ID cannot exceed 2**256 - 1 (max value of uint256). */ contract ERC721A is IERC721A { // Reference type for token approval. struct TokenApprovalRef { address value; } // ============================================================= // CONSTANTS // ============================================================= // Mask of an entry in packed address data. uint256 private constant _BITMASK_ADDRESS_DATA_ENTRY = (1 << 64) - 1; // The bit position of `numberMinted` in packed address data. uint256 private constant _BITPOS_NUMBER_MINTED = 64; // The bit position of `numberBurned` in packed address data. uint256 private constant _BITPOS_NUMBER_BURNED = 128; // The bit position of `aux` in packed address data. uint256 private constant _BITPOS_AUX = 192; // Mask of all 256 bits in packed address data except the 64 bits for `aux`. uint256 private constant _BITMASK_AUX_COMPLEMENT = (1 << 192) - 1; // The bit position of `startTimestamp` in packed ownership. uint256 private constant _BITPOS_START_TIMESTAMP = 160; // The bit mask of the `burned` bit in packed ownership. uint256 private constant _BITMASK_BURNED = 1 << 224; // The bit position of the `nextInitialized` bit in packed ownership. uint256 private constant _BITPOS_NEXT_INITIALIZED = 225; // The bit mask of the `nextInitialized` bit in packed ownership. uint256 private constant _BITMASK_NEXT_INITIALIZED = 1 << 225; // The bit position of `extraData` in packed ownership. uint256 private constant _BITPOS_EXTRA_DATA = 232; // Mask of all 256 bits in a packed ownership except the 24 bits for `extraData`. uint256 private constant _BITMASK_EXTRA_DATA_COMPLEMENT = (1 << 232) - 1; // The mask of the lower 160 bits for addresses. uint256 private constant _BITMASK_ADDRESS = (1 << 160) - 1; // The maximum `quantity` that can be minted with {_mintERC2309}. // This limit is to prevent overflows on the address data entries. // For a limit of 5000, a total of 3.689e15 calls to {_mintERC2309} // is required to cause an overflow, which is unrealistic. uint256 private constant _MAX_MINT_ERC2309_QUANTITY_LIMIT = 5000; // The `Transfer` event signature is given by: // `keccak256(bytes("Transfer(address,address,uint256)"))`. bytes32 private constant _TRANSFER_EVENT_SIGNATURE = 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef; // ============================================================= // STORAGE // ============================================================= // The next token ID to be minted. uint256 private _currentIndex; // The number of tokens burned. uint256 private _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 {_packedOwnershipOf} implementation for details. // // Bits Layout: // - [0..159] `addr` // - [160..223] `startTimestamp` // - [224] `burned` // - [225] `nextInitialized` // - [232..255] `extraData` mapping(uint256 => uint256) private _packedOwnerships; // Mapping owner address to address data. // // Bits Layout: // - [0..63] `balance` // - [64..127] `numberMinted` // - [128..191] `numberBurned` // - [192..255] `aux` mapping(address => uint256) private _packedAddressData; // Mapping from token ID to approved address. mapping(uint256 => TokenApprovalRef) private _tokenApprovals; // Mapping from owner to operator approvals mapping(address => mapping(address => bool)) private _operatorApprovals; // ============================================================= // CONSTRUCTOR // ============================================================= constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; _currentIndex = _startTokenId(); } // ============================================================= // TOKEN COUNTING OPERATIONS // ============================================================= /** * @dev Returns the starting token ID. * To change the starting token ID, please override this function. */ function _startTokenId() internal view virtual returns (uint256) { return 0; } /** * @dev Returns the next token ID to be minted. */ function _nextTokenId() internal view virtual returns (uint256) { return _currentIndex; } /** * @dev Returns the total number of tokens in existence. * Burned tokens will reduce the count. * To get the total number of tokens minted, please see {_totalMinted}. */ function totalSupply() public view virtual override returns (uint256) { // Counter underflow is impossible as _burnCounter cannot be incremented // more than `_currentIndex - _startTokenId()` times. unchecked { return _currentIndex - _burnCounter - _startTokenId(); } } /** * @dev Returns the total amount of tokens minted in the contract. */ function _totalMinted() internal view virtual returns (uint256) { // Counter underflow is impossible as `_currentIndex` does not decrement, // and it is initialized to `_startTokenId()`. unchecked { return _currentIndex - _startTokenId(); } } /** * @dev Returns the total number of tokens burned. */ function _totalBurned() internal view virtual returns (uint256) { return _burnCounter; } // ============================================================= // ADDRESS DATA OPERATIONS // ============================================================= /** * @dev Returns the number of tokens in `owner`'s account. */ function balanceOf(address owner) public view virtual override returns (uint256) { if (owner == address(0)) revert BalanceQueryForZeroAddress(); return _packedAddressData[owner] & _BITMASK_ADDRESS_DATA_ENTRY; } /** * Returns the number of tokens minted by `owner`. */ function _numberMinted(address owner) internal view returns (uint256) { return (_packedAddressData[owner] >> _BITPOS_NUMBER_MINTED) & _BITMASK_ADDRESS_DATA_ENTRY; } /** * Returns the number of tokens burned by or on behalf of `owner`. */ function _numberBurned(address owner) internal view returns (uint256) { return (_packedAddressData[owner] >> _BITPOS_NUMBER_BURNED) & _BITMASK_ADDRESS_DATA_ENTRY; } /** * Returns the auxiliary data for `owner`. (e.g. number of whitelist mint slots used). */ function _getAux(address owner) internal view returns (uint64) { return uint64(_packedAddressData[owner] >> _BITPOS_AUX); } /** * Sets the auxiliary 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 virtual { uint256 packed = _packedAddressData[owner]; uint256 auxCasted; // Cast `aux` with assembly to avoid redundant masking. assembly { auxCasted := aux } packed = (packed & _BITMASK_AUX_COMPLEMENT) | (auxCasted << _BITPOS_AUX); _packedAddressData[owner] = packed; } // ============================================================= // IERC165 // ============================================================= /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * [EIP section](https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified) * to learn more about how these ids are created. * * This function call must use less than 30000 gas. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { // The interface IDs are constants representing the first 4 bytes // of the XOR of all function selectors in the interface. // See: [ERC165](https://eips.ethereum.org/EIPS/eip-165) // (e.g. `bytes4(i.functionA.selector ^ i.functionB.selector ^ ...)`) return interfaceId == 0x01ffc9a7 || // ERC165 interface ID for ERC165. interfaceId == 0x80ac58cd || // ERC165 interface ID for ERC721. interfaceId == 0x5b5e139f; // ERC165 interface ID for ERC721Metadata. } // ============================================================= // IERC721Metadata // ============================================================= /** * @dev Returns the token collection name. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev Returns the token collection symbol. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. */ 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, _toString(tokenId))) : ''; } /** * @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, it can be overridden in child contracts. */ function _baseURI() internal view virtual returns (string memory) { return ''; } // ============================================================= // OWNERSHIPS OPERATIONS // ============================================================= /** * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function ownerOf(uint256 tokenId) public view virtual override returns (address) { return address(uint160(_packedOwnershipOf(tokenId))); } /** * @dev Gas spent here starts off proportional to the maximum mint batch size. * It gradually moves to O(1) as tokens get transferred around over time. */ function _ownershipOf(uint256 tokenId) internal view virtual returns (TokenOwnership memory) { return _unpackedOwnership(_packedOwnershipOf(tokenId)); } /** * @dev Returns the unpacked `TokenOwnership` struct at `index`. */ function _ownershipAt(uint256 index) internal view virtual returns (TokenOwnership memory) { return _unpackedOwnership(_packedOwnerships[index]); } /** * @dev Initializes the ownership slot minted at `index` for efficiency purposes. */ function _initializeOwnershipAt(uint256 index) internal virtual { if (_packedOwnerships[index] == 0) { _packedOwnerships[index] = _packedOwnershipOf(index); } } /** * Returns the packed ownership data of `tokenId`. */ function _packedOwnershipOf(uint256 tokenId) private view returns (uint256) { uint256 curr = tokenId; unchecked { if (_startTokenId() <= curr) if (curr < _currentIndex) { uint256 packed = _packedOwnerships[curr]; // If not burned. if (packed & _BITMASK_BURNED == 0) { // Invariant: // There will always be an initialized ownership slot // (i.e. `ownership.addr != address(0) && ownership.burned == false`) // before an unintialized ownership slot // (i.e. `ownership.addr == address(0) && ownership.burned == false`) // Hence, `curr` will not underflow. // // We can directly compare the packed value. // If the address is zero, packed will be zero. while (packed == 0) { packed = _packedOwnerships[--curr]; } return packed; } } } revert OwnerQueryForNonexistentToken(); } /** * @dev Returns the unpacked `TokenOwnership` struct from `packed`. */ function _unpackedOwnership(uint256 packed) private pure returns (TokenOwnership memory ownership) { ownership.addr = address(uint160(packed)); ownership.startTimestamp = uint64(packed >> _BITPOS_START_TIMESTAMP); ownership.burned = packed & _BITMASK_BURNED != 0; ownership.extraData = uint24(packed >> _BITPOS_EXTRA_DATA); } /** * @dev Packs ownership data into a single uint256. */ function _packOwnershipData(address owner, uint256 flags) private view returns (uint256 result) { assembly { // Mask `owner` to the lower 160 bits, in case the upper bits somehow aren't clean. owner := and(owner, _BITMASK_ADDRESS) // `owner | (block.timestamp << _BITPOS_START_TIMESTAMP) | flags`. result := or(owner, or(shl(_BITPOS_START_TIMESTAMP, timestamp()), flags)) } } /** * @dev Returns the `nextInitialized` flag set if `quantity` equals 1. */ function _nextInitializedFlag(uint256 quantity) private pure returns (uint256 result) { // For branchless setting of the `nextInitialized` flag. assembly { // `(quantity == 1) << _BITPOS_NEXT_INITIALIZED`. result := shl(_BITPOS_NEXT_INITIALIZED, eq(quantity, 1)) } } // ============================================================= // APPROVAL OPERATIONS // ============================================================= /** * @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) public virtual override { address owner = ownerOf(tokenId); if (_msgSenderERC721A() != owner) if (!isApprovedForAll(owner, _msgSenderERC721A())) { revert ApprovalCallerNotOwnerNorApproved(); } _tokenApprovals[tokenId].value = to; emit Approval(owner, to, tokenId); } /** * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function getApproved(uint256 tokenId) public view virtual override returns (address) { if (!_exists(tokenId)) revert ApprovalQueryForNonexistentToken(); return _tokenApprovals[tokenId].value; } /** * @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) public virtual override { if (operator == _msgSenderERC721A()) revert ApproveToCaller(); _operatorApprovals[_msgSenderERC721A()][operator] = approved; emit ApprovalForAll(_msgSenderERC721A(), operator, approved); } /** * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll}. */ function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } /** * @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. See {_mint}. */ function _exists(uint256 tokenId) internal view virtual returns (bool) { return _startTokenId() <= tokenId && tokenId < _currentIndex && // If within bounds, _packedOwnerships[tokenId] & _BITMASK_BURNED == 0; // and not burned. } /** * @dev Returns whether `msgSender` is equal to `approvedAddress` or `owner`. */ function _isSenderApprovedOrOwner( address approvedAddress, address owner, address msgSender ) private pure returns (bool result) { assembly { // Mask `owner` to the lower 160 bits, in case the upper bits somehow aren't clean. owner := and(owner, _BITMASK_ADDRESS) // Mask `msgSender` to the lower 160 bits, in case the upper bits somehow aren't clean. msgSender := and(msgSender, _BITMASK_ADDRESS) // `msgSender == owner || msgSender == approvedAddress`. result := or(eq(msgSender, owner), eq(msgSender, approvedAddress)) } } /** * @dev Returns the storage slot and value for the approved address of `tokenId`. */ function _getApprovedSlotAndAddress(uint256 tokenId) private view returns (uint256 approvedAddressSlot, address approvedAddress) { TokenApprovalRef storage tokenApproval = _tokenApprovals[tokenId]; // The following is equivalent to `approvedAddress = _tokenApprovals[tokenId]`. assembly { approvedAddressSlot := tokenApproval.slot approvedAddress := sload(approvedAddressSlot) } } // ============================================================= // TRANSFER OPERATIONS // ============================================================= /** * @dev Transfers `tokenId` from `from` to `to`. * * 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 ) public virtual override { uint256 prevOwnershipPacked = _packedOwnershipOf(tokenId); if (address(uint160(prevOwnershipPacked)) != from) revert TransferFromIncorrectOwner(); (uint256 approvedAddressSlot, address approvedAddress) = _getApprovedSlotAndAddress(tokenId); // The nested ifs save around 20+ gas over a compound boolean condition. if (!_isSenderApprovedOrOwner(approvedAddress, from, _msgSenderERC721A())) if (!isApprovedForAll(from, _msgSenderERC721A())) revert TransferCallerNotOwnerNorApproved(); if (to == address(0)) revert TransferToZeroAddress(); _beforeTokenTransfers(from, to, tokenId, 1); // Clear approvals from the previous owner. assembly { if approvedAddress { // This is equivalent to `delete _tokenApprovals[tokenId]`. sstore(approvedAddressSlot, 0) } } // 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 { // We can directly increment and decrement the balances. --_packedAddressData[from]; // Updates: `balance -= 1`. ++_packedAddressData[to]; // Updates: `balance += 1`. // Updates: // - `address` to the next owner. // - `startTimestamp` to the timestamp of transfering. // - `burned` to `false`. // - `nextInitialized` to `true`. _packedOwnerships[tokenId] = _packOwnershipData( to, _BITMASK_NEXT_INITIALIZED | _nextExtraData(from, to, prevOwnershipPacked) ); // If the next slot may not have been initialized (i.e. `nextInitialized == false`) . if (prevOwnershipPacked & _BITMASK_NEXT_INITIALIZED == 0) { uint256 nextTokenId = tokenId + 1; // If the next slot's address is zero and not burned (i.e. packed value is zero). if (_packedOwnerships[nextTokenId] == 0) { // If the next slot is within bounds. if (nextTokenId != _currentIndex) { // Initialize the next slot to maintain correctness for `ownerOf(tokenId + 1)`. _packedOwnerships[nextTokenId] = prevOwnershipPacked; } } } } emit Transfer(from, to, tokenId); _afterTokenTransfers(from, to, tokenId, 1); } /** * @dev Equivalent to `safeTransferFrom(from, to, tokenId, '')`. */ function safeTransferFrom( address from, address to, uint256 tokenId ) public virtual override { safeTransferFrom(from, to, tokenId, ''); } /** * @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 memory _data ) public virtual override { transferFrom(from, to, tokenId); if (to.code.length != 0) if (!_checkContractOnERC721Received(from, to, tokenId, _data)) { revert TransferToNonERC721ReceiverImplementer(); } } /** * @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 {} /** * @dev Private function to invoke {IERC721Receiver-onERC721Received} on a target contract. * * `from` - Previous owner of the given token ID. * `to` - Target address that will receive the token. * `tokenId` - Token ID to be transferred. * `_data` - Optional data to send along with the call. * * Returns whether the call correctly returned the expected magic value. */ function _checkContractOnERC721Received( address from, address to, uint256 tokenId, bytes memory _data ) private returns (bool) { try ERC721A__IERC721Receiver(to).onERC721Received(_msgSenderERC721A(), from, tokenId, _data) returns ( bytes4 retval ) { return retval == ERC721A__IERC721Receiver(to).onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert TransferToNonERC721ReceiverImplementer(); } else { assembly { revert(add(32, reason), mload(reason)) } } } } // ============================================================= // MINT OPERATIONS // ============================================================= /** * @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 for each mint. */ function _mint(address to, uint256 quantity) internal virtual { uint256 startTokenId = _currentIndex; if (quantity == 0) revert MintZeroQuantity(); _beforeTokenTransfers(address(0), to, startTokenId, quantity); // Overflows are incredibly unrealistic. // `balance` and `numberMinted` have a maximum limit of 2**64. // `tokenId` has a maximum limit of 2**256. unchecked { // Updates: // - `balance += quantity`. // - `numberMinted += quantity`. // // We can directly add to the `balance` and `numberMinted`. _packedAddressData[to] += quantity * ((1 << _BITPOS_NUMBER_MINTED) | 1); // Updates: // - `address` to the owner. // - `startTimestamp` to the timestamp of minting. // - `burned` to `false`. // - `nextInitialized` to `quantity == 1`. _packedOwnerships[startTokenId] = _packOwnershipData( to, _nextInitializedFlag(quantity) | _nextExtraData(address(0), to, 0) ); uint256 toMasked; uint256 end = startTokenId + quantity; // Use assembly to loop and emit the `Transfer` event for gas savings. assembly { // Mask `to` to the lower 160 bits, in case the upper bits somehow aren't clean. toMasked := and(to, _BITMASK_ADDRESS) // Emit the `Transfer` event. log4( 0, // Start of data (0, since no data). 0, // End of data (0, since no data). _TRANSFER_EVENT_SIGNATURE, // Signature. 0, // `address(0)`. toMasked, // `to`. startTokenId // `tokenId`. ) for { let tokenId := add(startTokenId, 1) } iszero(eq(tokenId, end)) { tokenId := add(tokenId, 1) } { // Emit the `Transfer` event. Similar to above. log4(0, 0, _TRANSFER_EVENT_SIGNATURE, 0, toMasked, tokenId) } } if (toMasked == 0) revert MintToZeroAddress(); _currentIndex = end; } _afterTokenTransfers(address(0), to, startTokenId, quantity); } /** * @dev Mints `quantity` tokens and transfers them to `to`. * * This function is intended for efficient minting only during contract creation. * * It emits only one {ConsecutiveTransfer} as defined in * [ERC2309](https://eips.ethereum.org/EIPS/eip-2309), * instead of a sequence of {Transfer} event(s). * * Calling this function outside of contract creation WILL make your contract * non-compliant with the ERC721 standard. * For full ERC721 compliance, substituting ERC721 {Transfer} event(s) with the ERC2309 * {ConsecutiveTransfer} event is only permissible during contract creation. * * Requirements: * * - `to` cannot be the zero address. * - `quantity` must be greater than 0. * * Emits a {ConsecutiveTransfer} event. */ function _mintERC2309(address to, uint256 quantity) internal virtual { uint256 startTokenId = _currentIndex; if (to == address(0)) revert MintToZeroAddress(); if (quantity == 0) revert MintZeroQuantity(); if (quantity > _MAX_MINT_ERC2309_QUANTITY_LIMIT) revert MintERC2309QuantityExceedsLimit(); _beforeTokenTransfers(address(0), to, startTokenId, quantity); // Overflows are unrealistic due to the above check for `quantity` to be below the limit. unchecked { // Updates: // - `balance += quantity`. // - `numberMinted += quantity`. // // We can directly add to the `balance` and `numberMinted`. _packedAddressData[to] += quantity * ((1 << _BITPOS_NUMBER_MINTED) | 1); // Updates: // - `address` to the owner. // - `startTimestamp` to the timestamp of minting. // - `burned` to `false`. // - `nextInitialized` to `quantity == 1`. _packedOwnerships[startTokenId] = _packOwnershipData( to, _nextInitializedFlag(quantity) | _nextExtraData(address(0), to, 0) ); emit ConsecutiveTransfer(startTokenId, startTokenId + quantity - 1, address(0), to); _currentIndex = startTokenId + quantity; } _afterTokenTransfers(address(0), to, startTokenId, 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. * * See {_mint}. * * Emits a {Transfer} event for each mint. */ function _safeMint( address to, uint256 quantity, bytes memory _data ) internal virtual { _mint(to, quantity); unchecked { if (to.code.length != 0) { uint256 end = _currentIndex; uint256 index = end - quantity; do { if (!_checkContractOnERC721Received(address(0), to, index++, _data)) { revert TransferToNonERC721ReceiverImplementer(); } } while (index < end); // Reentrancy protection. if (_currentIndex != end) revert(); } } } /** * @dev Equivalent to `_safeMint(to, quantity, '')`. */ function _safeMint(address to, uint256 quantity) internal virtual { _safeMint(to, quantity, ''); } // ============================================================= // BURN OPERATIONS // ============================================================= /** * @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 { uint256 prevOwnershipPacked = _packedOwnershipOf(tokenId); address from = address(uint160(prevOwnershipPacked)); (uint256 approvedAddressSlot, address approvedAddress) = _getApprovedSlotAndAddress(tokenId); if (approvalCheck) { // The nested ifs save around 20+ gas over a compound boolean condition. if (!_isSenderApprovedOrOwner(approvedAddress, from, _msgSenderERC721A())) if (!isApprovedForAll(from, _msgSenderERC721A())) revert TransferCallerNotOwnerNorApproved(); } _beforeTokenTransfers(from, address(0), tokenId, 1); // Clear approvals from the previous owner. assembly { if approvedAddress { // This is equivalent to `delete _tokenApprovals[tokenId]`. sstore(approvedAddressSlot, 0) } } // 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 { // Updates: // - `balance -= 1`. // - `numberBurned += 1`. // // We can directly decrement the balance, and increment the number burned. // This is equivalent to `packed -= 1; packed += 1 << _BITPOS_NUMBER_BURNED;`. _packedAddressData[from] += (1 << _BITPOS_NUMBER_BURNED) - 1; // Updates: // - `address` to the last owner. // - `startTimestamp` to the timestamp of burning. // - `burned` to `true`. // - `nextInitialized` to `true`. _packedOwnerships[tokenId] = _packOwnershipData( from, (_BITMASK_BURNED | _BITMASK_NEXT_INITIALIZED) | _nextExtraData(from, address(0), prevOwnershipPacked) ); // If the next slot may not have been initialized (i.e. `nextInitialized == false`) . if (prevOwnershipPacked & _BITMASK_NEXT_INITIALIZED == 0) { uint256 nextTokenId = tokenId + 1; // If the next slot's address is zero and not burned (i.e. packed value is zero). if (_packedOwnerships[nextTokenId] == 0) { // If the next slot is within bounds. if (nextTokenId != _currentIndex) { // Initialize the next slot to maintain correctness for `ownerOf(tokenId + 1)`. _packedOwnerships[nextTokenId] = prevOwnershipPacked; } } } } emit Transfer(from, address(0), tokenId); _afterTokenTransfers(from, address(0), tokenId, 1); // Overflow not possible, as _burnCounter cannot be exceed _currentIndex times. unchecked { _burnCounter++; } } // ============================================================= // EXTRA DATA OPERATIONS // ============================================================= /** * @dev Directly sets the extra data for the ownership data `index`. */ function _setExtraDataAt(uint256 index, uint24 extraData) internal virtual { uint256 packed = _packedOwnerships[index]; if (packed == 0) revert OwnershipNotInitializedForExtraData(); uint256 extraDataCasted; // Cast `extraData` with assembly to avoid redundant masking. assembly { extraDataCasted := extraData } packed = (packed & _BITMASK_EXTRA_DATA_COMPLEMENT) | (extraDataCasted << _BITPOS_EXTRA_DATA); _packedOwnerships[index] = packed; } /** * @dev Called during each token transfer to set the 24bit `extraData` field. * Intended to be overridden by the cosumer contract. * * `previousExtraData` - the value of `extraData` before transfer. * * 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 _extraData( address from, address to, uint24 previousExtraData ) internal view virtual returns (uint24) {} /** * @dev Returns the next extra data for the packed ownership data. * The returned result is shifted into position. */ function _nextExtraData( address from, address to, uint256 prevOwnershipPacked ) private view returns (uint256) { uint24 extraData = uint24(prevOwnershipPacked >> _BITPOS_EXTRA_DATA); return uint256(_extraData(from, to, extraData)) << _BITPOS_EXTRA_DATA; } // ============================================================= // OTHER OPERATIONS // ============================================================= /** * @dev Returns the message sender (defaults to `msg.sender`). * * If you are writing GSN compatible contracts, you need to override this function. */ function _msgSenderERC721A() internal view virtual returns (address) { return msg.sender; } /** * @dev Converts a uint256 to its ASCII string decimal representation. */ function _toString(uint256 value) internal pure virtual returns (string memory str) { assembly { // The maximum value of a uint256 contains 78 digits (1 byte per digit), // but we allocate 0x80 bytes to keep the free memory pointer 32-byte word aliged. // We will need 1 32-byte word to store the length, // and 3 32-byte words to store a maximum of 78 digits. Total: 0x20 + 3 * 0x20 = 0x80. str := add(mload(0x40), 0x80) // Update the free memory pointer to allocate. mstore(0x40, str) // Cache the end of the memory to calculate the length later. let end := str // We write the string from rightmost digit to leftmost digit. // The following is essentially a do-while loop that also handles the zero case. // prettier-ignore for { let temp := value } 1 {} { str := sub(str, 1) // Write the character to the pointer. // The ASCII index of the '0' character is 48. mstore8(str, add(48, mod(temp, 10))) // Keep dividing `temp` until zero. temp := div(temp, 10) // prettier-ignore if iszero(temp) { break } } let length := sub(end, str) // Move the pointer 32 bytes leftwards to make room for the length. str := sub(str, 0x20) // Store the length. mstore(str, length) } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol) pragma solidity ^0.8.0; import "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 // 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) (token/common/ERC2981.sol) pragma solidity ^0.8.0; import "IERC2981.sol"; import "ERC165.sol"; /** * @dev Implementation of the NFT Royalty Standard, a standardized way to retrieve royalty payment information. * * Royalty information can be specified globally for all token ids via {_setDefaultRoyalty}, and/or individually for * specific token ids via {_setTokenRoyalty}. The latter takes precedence over the first. * * Royalty is specified as a fraction of sale price. {_feeDenominator} is overridable but defaults to 10000, meaning the * fee is specified in basis points by default. * * IMPORTANT: ERC-2981 only specifies a way to signal royalty information and does not enforce its payment. See * https://eips.ethereum.org/EIPS/eip-2981#optional-royalty-payments[Rationale] in the EIP. Marketplaces are expected to * voluntarily pay royalties together with sales, but note that this standard is not yet widely supported. * * _Available since v4.5._ */ abstract contract ERC2981 is IERC2981, ERC165 { struct RoyaltyInfo { address receiver; uint96 royaltyFraction; } RoyaltyInfo private _defaultRoyaltyInfo; mapping(uint256 => RoyaltyInfo) private _tokenRoyaltyInfo; /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC165) returns (bool) { return interfaceId == type(IERC2981).interfaceId || super.supportsInterface(interfaceId); } /** * @inheritdoc IERC2981 */ function royaltyInfo(uint256 _tokenId, uint256 _salePrice) public view virtual override returns (address, uint256) { RoyaltyInfo memory royalty = _tokenRoyaltyInfo[_tokenId]; if (royalty.receiver == address(0)) { royalty = _defaultRoyaltyInfo; } uint256 royaltyAmount = (_salePrice * royalty.royaltyFraction) / _feeDenominator(); return (royalty.receiver, royaltyAmount); } /** * @dev The denominator with which to interpret the fee set in {_setTokenRoyalty} and {_setDefaultRoyalty} as a * fraction of the sale price. Defaults to 10000 so fees are expressed in basis points, but may be customized by an * override. */ function _feeDenominator() internal pure virtual returns (uint96) { return 10000; } /** * @dev Sets the royalty information that all ids in this contract will default to. * * Requirements: * * - `receiver` cannot be the zero address. * - `feeNumerator` cannot be greater than the fee denominator. */ function _setDefaultRoyalty(address receiver, uint96 feeNumerator) internal virtual { require(feeNumerator <= _feeDenominator(), "ERC2981: royalty fee will exceed salePrice"); require(receiver != address(0), "ERC2981: invalid receiver"); _defaultRoyaltyInfo = RoyaltyInfo(receiver, feeNumerator); } /** * @dev Removes default royalty information. */ function _deleteDefaultRoyalty() internal virtual { delete _defaultRoyaltyInfo; } /** * @dev Sets the royalty information for a specific token id, overriding the global default. * * Requirements: * * - `receiver` cannot be the zero address. * - `feeNumerator` cannot be greater than the fee denominator. */ function _setTokenRoyalty( uint256 tokenId, address receiver, uint96 feeNumerator ) internal virtual { require(feeNumerator <= _feeDenominator(), "ERC2981: royalty fee will exceed salePrice"); require(receiver != address(0), "ERC2981: Invalid parameters"); _tokenRoyaltyInfo[tokenId] = RoyaltyInfo(receiver, feeNumerator); } /** * @dev Resets royalty information for the token id back to the global default. */ function _resetTokenRoyalty(uint256 tokenId) internal virtual { delete _tokenRoyaltyInfo[tokenId]; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.6.0) (interfaces/IERC2981.sol) pragma solidity ^0.8.0; import "IERC165.sol"; /** * @dev Interface for the NFT Royalty Standard. * * A standardized way to retrieve royalty payment information for non-fungible tokens (NFTs) to enable universal * support for royalty payments across all NFT marketplaces and ecosystem participants. * * _Available since v4.5._ */ interface IERC2981 is IERC165 { /** * @dev Returns how much royalty is owed and to whom, based on a sale price that may be denominated in any unit of * exchange. The royalty amount is denominated and should be paid in that same unit of exchange. */ function royaltyInfo(uint256 tokenId, uint256 salePrice) external view returns (address receiver, uint256 royaltyAmount); }
// 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 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 v4.8.0) (utils/cryptography/draft-EIP712.sol) pragma solidity ^0.8.0; // EIP-712 is Final as of 2022-08-11. This file is deprecated. import "EIP712.sol";
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (utils/cryptography/EIP712.sol) pragma solidity ^0.8.0; import "ECDSA.sol"; /** * @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data. * * The encoding specified in the EIP is very generic, and such a generic implementation in Solidity is not feasible, * thus this contract does not implement the encoding itself. Protocols need to implement the type-specific encoding * they need in their contracts using a combination of `abi.encode` and `keccak256`. * * This contract implements the EIP 712 domain separator ({_domainSeparatorV4}) that is used as part of the encoding * scheme, and the final step of the encoding to obtain the message digest that is then signed via ECDSA * ({_hashTypedDataV4}). * * The implementation of the domain separator was designed to be as efficient as possible while still properly updating * the chain id to protect against replay attacks on an eventual fork of the chain. * * NOTE: This contract implements the version of the encoding known as "v4", as implemented by the JSON RPC method * https://docs.metamask.io/guide/signing-data.html[`eth_signTypedDataV4` in MetaMask]. * * _Available since v3.4._ */ abstract contract EIP712 { /* solhint-disable var-name-mixedcase */ // Cache the domain separator as an immutable value, but also store the chain id that it corresponds to, in order to // invalidate the cached domain separator if the chain id changes. bytes32 private immutable _CACHED_DOMAIN_SEPARATOR; uint256 private immutable _CACHED_CHAIN_ID; address private immutable _CACHED_THIS; bytes32 private immutable _HASHED_NAME; bytes32 private immutable _HASHED_VERSION; bytes32 private immutable _TYPE_HASH; /* solhint-enable var-name-mixedcase */ /** * @dev Initializes the domain separator and parameter caches. * * The meaning of `name` and `version` is specified in * https://eips.ethereum.org/EIPS/eip-712#definition-of-domainseparator[EIP 712]: * * - `name`: the user readable name of the signing domain, i.e. the name of the DApp or the protocol. * - `version`: the current major version of the signing domain. * * NOTE: These parameters cannot be changed except through a xref:learn::upgrading-smart-contracts.adoc[smart * contract upgrade]. */ constructor(string memory name, string memory version) { bytes32 hashedName = keccak256(bytes(name)); bytes32 hashedVersion = keccak256(bytes(version)); bytes32 typeHash = keccak256( "EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)" ); _HASHED_NAME = hashedName; _HASHED_VERSION = hashedVersion; _CACHED_CHAIN_ID = block.chainid; _CACHED_DOMAIN_SEPARATOR = _buildDomainSeparator(typeHash, hashedName, hashedVersion); _CACHED_THIS = address(this); _TYPE_HASH = typeHash; } /** * @dev Returns the domain separator for the current chain. */ function _domainSeparatorV4() internal view returns (bytes32) { if (address(this) == _CACHED_THIS && block.chainid == _CACHED_CHAIN_ID) { return _CACHED_DOMAIN_SEPARATOR; } else { return _buildDomainSeparator(_TYPE_HASH, _HASHED_NAME, _HASHED_VERSION); } } function _buildDomainSeparator( bytes32 typeHash, bytes32 nameHash, bytes32 versionHash ) private view returns (bytes32) { return keccak256(abi.encode(typeHash, nameHash, versionHash, block.chainid, address(this))); } /** * @dev Given an already https://eips.ethereum.org/EIPS/eip-712#definition-of-hashstruct[hashed struct], this * function returns the hash of the fully encoded EIP712 message for this domain. * * This hash can be used together with {ECDSA-recover} to obtain the signer of a message. For example: * * ```solidity * bytes32 digest = _hashTypedDataV4(keccak256(abi.encode( * keccak256("Mail(address to,string contents)"), * mailTo, * keccak256(bytes(mailContents)) * ))); * address signer = ECDSA.recover(digest, signature); * ``` */ function _hashTypedDataV4(bytes32 structHash) internal view virtual returns (bytes32) { return ECDSA.toTypedDataHash(_domainSeparatorV4(), structHash); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (utils/cryptography/ECDSA.sol) pragma solidity ^0.8.0; import "Strings.sol"; /** * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations. * * These functions can be used to verify that a message was signed by the holder * of the private keys of a given address. */ library ECDSA { enum RecoverError { NoError, InvalidSignature, InvalidSignatureLength, InvalidSignatureS, InvalidSignatureV // Deprecated in v4.8 } function _throwError(RecoverError error) private pure { if (error == RecoverError.NoError) { return; // no error: do nothing } else if (error == RecoverError.InvalidSignature) { revert("ECDSA: invalid signature"); } else if (error == RecoverError.InvalidSignatureLength) { revert("ECDSA: invalid signature length"); } else if (error == RecoverError.InvalidSignatureS) { revert("ECDSA: invalid signature 's' value"); } } /** * @dev Returns the address that signed a hashed message (`hash`) with * `signature` or error string. This address can then be used for verification purposes. * * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {toEthSignedMessageHash} on it. * * Documentation for signature generation: * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js] * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers] * * _Available since v4.3._ */ function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) { if (signature.length == 65) { bytes32 r; bytes32 s; uint8 v; // ecrecover takes the signature parameters, and the only way to get them // currently is to use assembly. /// @solidity memory-safe-assembly assembly { r := mload(add(signature, 0x20)) s := mload(add(signature, 0x40)) v := byte(0, mload(add(signature, 0x60))) } return tryRecover(hash, v, r, s); } else { return (address(0), RecoverError.InvalidSignatureLength); } } /** * @dev Returns the address that signed a hashed message (`hash`) with * `signature`. This address can then be used for verification purposes. * * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures: * this function rejects them by requiring the `s` value to be in the lower * half order, and the `v` value to be either 27 or 28. * * IMPORTANT: `hash` _must_ be the result of a hash operation for the * verification to be secure: it is possible to craft signatures that * recover to arbitrary addresses for non-hashed data. A safe way to ensure * this is by receiving a hash of the original message (which may otherwise * be too long), and then calling {toEthSignedMessageHash} on it. */ function recover(bytes32 hash, bytes memory signature) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, signature); _throwError(error); return recovered; } /** * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately. * * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures] * * _Available since v4.3._ */ function tryRecover( bytes32 hash, bytes32 r, bytes32 vs ) internal pure returns (address, RecoverError) { bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff); uint8 v = uint8((uint256(vs) >> 255) + 27); return tryRecover(hash, v, r, s); } /** * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately. * * _Available since v4.2._ */ function recover( bytes32 hash, bytes32 r, bytes32 vs ) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, r, vs); _throwError(error); return recovered; } /** * @dev Overload of {ECDSA-tryRecover} that receives the `v`, * `r` and `s` signature fields separately. * * _Available since v4.3._ */ function tryRecover( bytes32 hash, uint8 v, bytes32 r, bytes32 s ) internal pure returns (address, RecoverError) { // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v β {27, 28}. Most // signatures from current libraries generate a unique signature with an s-value in the lower half order. // // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept // these malleable signatures as well. if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) { return (address(0), RecoverError.InvalidSignatureS); } // If the signature is valid (and not malleable), return the signer address address signer = ecrecover(hash, v, r, s); if (signer == address(0)) { return (address(0), RecoverError.InvalidSignature); } return (signer, RecoverError.NoError); } /** * @dev Overload of {ECDSA-recover} that receives the `v`, * `r` and `s` signature fields separately. */ function recover( bytes32 hash, uint8 v, bytes32 r, bytes32 s ) internal pure returns (address) { (address recovered, RecoverError error) = tryRecover(hash, v, r, s); _throwError(error); return recovered; } /** * @dev Returns an Ethereum Signed Message, created from a `hash`. This * produces hash corresponding to the one signed with the * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] * JSON-RPC method as part of EIP-191. * * See {recover}. */ function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) { // 32 is the length in bytes of hash, // enforced by the type signature above return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash)); } /** * @dev Returns an Ethereum Signed Message, created from `s`. This * produces hash corresponding to the one signed with the * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`] * JSON-RPC method as part of EIP-191. * * See {recover}. */ function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) { return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", Strings.toString(s.length), s)); } /** * @dev Returns an Ethereum Signed Typed Data, created from a * `domainSeparator` and a `structHash`. This produces hash corresponding * to the one signed with the * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`] * JSON-RPC method as part of EIP-712. * * See {recover}. */ function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) { return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash)); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (utils/Strings.sol) pragma solidity ^0.8.0; import "Math.sol"; /** * @dev String operations. */ library Strings { bytes16 private constant _SYMBOLS = "0123456789abcdef"; uint8 private constant _ADDRESS_LENGTH = 20; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { unchecked { uint256 length = Math.log10(value) + 1; string memory buffer = new string(length); uint256 ptr; /// @solidity memory-safe-assembly assembly { ptr := add(buffer, add(32, length)) } while (true) { ptr--; /// @solidity memory-safe-assembly assembly { mstore8(ptr, byte(mod(value, 10), _SYMBOLS)) } value /= 10; if (value == 0) break; } return buffer; } } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { unchecked { return toHexString(value, Math.log256(value) + 1); } } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } /** * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation. */ function toHexString(address addr) internal pure returns (string memory) { return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (utils/math/Math.sol) pragma solidity ^0.8.0; /** * @dev Standard math utilities missing in the Solidity language. */ library Math { enum Rounding { Down, // Toward negative infinity Up, // Toward infinity Zero // Toward zero } /** * @dev Returns the largest of two numbers. */ function max(uint256 a, uint256 b) internal pure returns (uint256) { return a > b ? a : b; } /** * @dev Returns the smallest of two numbers. */ function min(uint256 a, uint256 b) internal pure returns (uint256) { return a < b ? a : b; } /** * @dev Returns the average of two numbers. The result is rounded towards * zero. */ function average(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b) / 2 can overflow. return (a & b) + (a ^ b) / 2; } /** * @dev Returns the ceiling of the division of two numbers. * * This differs from standard division with `/` in that it rounds up instead * of rounding down. */ function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b - 1) / b can overflow on addition, so we distribute. return a == 0 ? 0 : (a - 1) / b + 1; } /** * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0 * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv) * with further edits by Uniswap Labs also under MIT license. */ function mulDiv( uint256 x, uint256 y, uint256 denominator ) internal pure returns (uint256 result) { unchecked { // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256 // variables such that product = prod1 * 2^256 + prod0. uint256 prod0; // Least significant 256 bits of the product uint256 prod1; // Most significant 256 bits of the product assembly { let mm := mulmod(x, y, not(0)) prod0 := mul(x, y) prod1 := sub(sub(mm, prod0), lt(mm, prod0)) } // Handle non-overflow cases, 256 by 256 division. if (prod1 == 0) { return prod0 / denominator; } // Make sure the result is less than 2^256. Also prevents denominator == 0. require(denominator > prod1); /////////////////////////////////////////////// // 512 by 256 division. /////////////////////////////////////////////// // Make division exact by subtracting the remainder from [prod1 prod0]. uint256 remainder; assembly { // Compute remainder using mulmod. remainder := mulmod(x, y, denominator) // Subtract 256 bit number from 512 bit number. prod1 := sub(prod1, gt(remainder, prod0)) prod0 := sub(prod0, remainder) } // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1. // See https://cs.stackexchange.com/q/138556/92363. // Does not overflow because the denominator cannot be zero at this stage in the function. uint256 twos = denominator & (~denominator + 1); assembly { // Divide denominator by twos. denominator := div(denominator, twos) // Divide [prod1 prod0] by twos. prod0 := div(prod0, twos) // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one. twos := add(div(sub(0, twos), twos), 1) } // Shift in bits from prod1 into prod0. prod0 |= prod1 * twos; // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for // four bits. That is, denominator * inv = 1 mod 2^4. uint256 inverse = (3 * denominator) ^ 2; // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works // in modular arithmetic, doubling the correct bits in each step. inverse *= 2 - denominator * inverse; // inverse mod 2^8 inverse *= 2 - denominator * inverse; // inverse mod 2^16 inverse *= 2 - denominator * inverse; // inverse mod 2^32 inverse *= 2 - denominator * inverse; // inverse mod 2^64 inverse *= 2 - denominator * inverse; // inverse mod 2^128 inverse *= 2 - denominator * inverse; // inverse mod 2^256 // Because the division is now exact we can divide by multiplying with the modular inverse of denominator. // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1 // is no longer required. result = prod0 * inverse; return result; } } /** * @notice Calculates x * y / denominator with full precision, following the selected rounding direction. */ function mulDiv( uint256 x, uint256 y, uint256 denominator, Rounding rounding ) internal pure returns (uint256) { uint256 result = mulDiv(x, y, denominator); if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) { result += 1; } return result; } /** * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down. * * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11). */ function sqrt(uint256 a) internal pure returns (uint256) { if (a == 0) { return 0; } // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target. // // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`. // // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)` // β `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))` // β `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)` // // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit. uint256 result = 1 << (log2(a) >> 1); // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128, // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision // into the expected uint128 result. unchecked { result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; return min(result, a / result); } } /** * @notice Calculates sqrt(a), following the selected rounding direction. */ function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = sqrt(a); return result + (rounding == Rounding.Up && result * result < a ? 1 : 0); } } /** * @dev Return the log in base 2, rounded down, of a positive value. * Returns 0 if given 0. */ function log2(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >> 128 > 0) { value >>= 128; result += 128; } if (value >> 64 > 0) { value >>= 64; result += 64; } if (value >> 32 > 0) { value >>= 32; result += 32; } if (value >> 16 > 0) { value >>= 16; result += 16; } if (value >> 8 > 0) { value >>= 8; result += 8; } if (value >> 4 > 0) { value >>= 4; result += 4; } if (value >> 2 > 0) { value >>= 2; result += 2; } if (value >> 1 > 0) { result += 1; } } return result; } /** * @dev Return the log in base 2, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log2(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log2(value); return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0); } } /** * @dev Return the log in base 10, rounded down, of a positive value. * Returns 0 if given 0. */ function log10(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >= 10**64) { value /= 10**64; result += 64; } if (value >= 10**32) { value /= 10**32; result += 32; } if (value >= 10**16) { value /= 10**16; result += 16; } if (value >= 10**8) { value /= 10**8; result += 8; } if (value >= 10**4) { value /= 10**4; result += 4; } if (value >= 10**2) { value /= 10**2; result += 2; } if (value >= 10**1) { result += 1; } } return result; } /** * @dev Return the log in base 10, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log10(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log10(value); return result + (rounding == Rounding.Up && 10**result < value ? 1 : 0); } } /** * @dev Return the log in base 256, rounded down, of a positive value. * Returns 0 if given 0. * * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string. */ function log256(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >> 128 > 0) { value >>= 128; result += 16; } if (value >> 64 > 0) { value >>= 64; result += 8; } if (value >> 32 > 0) { value >>= 32; result += 4; } if (value >> 16 > 0) { value >>= 16; result += 2; } if (value >> 8 > 0) { result += 1; } } return result; } /** * @dev Return the log in base 10, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log256(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log256(value); return result + (rounding == Rounding.Up && 1 << (result * 8) < value ? 1 : 0); } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.13; import {RevokableOperatorFilterer} from "RevokableOperatorFilterer.sol"; import {CANONICAL_CORI_SUBSCRIPTION, CANONICAL_OPERATOR_FILTER_REGISTRY_ADDRESS} from "Constants.sol"; /** * @title RevokableDefaultOperatorFilterer * @notice Inherits from RevokableOperatorFilterer and automatically subscribes to the default OpenSea subscription. * Note that OpenSea will disable creator earnings enforcement if filtered operators begin fulfilling orders * on-chain, eg, if the registry is revoked or bypassed. */ abstract contract RevokableDefaultOperatorFilterer is RevokableOperatorFilterer { /// @dev The constructor that is called when the contract is being deployed. constructor() RevokableOperatorFilterer(CANONICAL_OPERATOR_FILTER_REGISTRY_ADDRESS, CANONICAL_CORI_SUBSCRIPTION, true) {} }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.13; import {UpdatableOperatorFilterer} from "UpdatableOperatorFilterer.sol"; import {IOperatorFilterRegistry} from "IOperatorFilterRegistry.sol"; /** * @title RevokableOperatorFilterer * @notice This contract is meant to allow contracts to permanently skip OperatorFilterRegistry checks if desired. The * Registry itself has an "unregister" function, but if the contract is ownable, the owner can re-register at * any point. As implemented, this abstract contract allows the contract owner to permanently skip the * OperatorFilterRegistry checks by calling revokeOperatorFilterRegistry. Once done, the registry * address cannot be further updated. * Note that OpenSea will still disable creator earnings enforcement if filtered operators begin fulfilling orders * on-chain, eg, if the registry is revoked or bypassed. */ abstract contract RevokableOperatorFilterer is UpdatableOperatorFilterer { /// @dev Emitted when the registry has already been revoked. error RegistryHasBeenRevoked(); /// @dev Emitted when the initial registry address is attempted to be set to the zero address. error InitialRegistryAddressCannotBeZeroAddress(); event OperatorFilterRegistryRevoked(); bool public isOperatorFilterRegistryRevoked; /// @dev The constructor that is called when the contract is being deployed. constructor(address _registry, address subscriptionOrRegistrantToCopy, bool subscribe) UpdatableOperatorFilterer(_registry, subscriptionOrRegistrantToCopy, subscribe) { // don't allow creating a contract with a permanently revoked registry if (_registry == address(0)) { revert InitialRegistryAddressCannotBeZeroAddress(); } } /** * @notice Update the address that the contract will make OperatorFilter checks against. When set to the zero * address, checks will be permanently bypassed, and the address cannot be updated again. OnlyOwner. */ function updateOperatorFilterRegistryAddress(address newRegistry) public override { if (msg.sender != owner()) { revert OnlyOwner(); } // if registry has been revoked, do not allow further updates if (isOperatorFilterRegistryRevoked) { revert RegistryHasBeenRevoked(); } operatorFilterRegistry = IOperatorFilterRegistry(newRegistry); emit OperatorFilterRegistryAddressUpdated(newRegistry); } /** * @notice Revoke the OperatorFilterRegistry address, permanently bypassing checks. OnlyOwner. */ function revokeOperatorFilterRegistry() public { if (msg.sender != owner()) { revert OnlyOwner(); } // if registry has been revoked, do not allow further updates if (isOperatorFilterRegistryRevoked) { revert RegistryHasBeenRevoked(); } // set to zero address to bypass checks operatorFilterRegistry = IOperatorFilterRegistry(address(0)); isOperatorFilterRegistryRevoked = true; emit OperatorFilterRegistryRevoked(); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.13; import {IOperatorFilterRegistry} from "IOperatorFilterRegistry.sol"; /** * @title UpdatableOperatorFilterer * @notice Abstract contract whose constructor automatically registers and optionally subscribes to or copies another * registrant's entries in the OperatorFilterRegistry. This contract allows the Owner to update the * OperatorFilterRegistry address via updateOperatorFilterRegistryAddress, including to the zero address, * which will bypass registry checks. * Note that OpenSea will still disable creator earnings enforcement if filtered operators begin fulfilling orders * on-chain, eg, if the registry is revoked or bypassed. * @dev This smart contract is meant to be inherited by token contracts so they can use the following: * - `onlyAllowedOperator` modifier for `transferFrom` and `safeTransferFrom` methods. * - `onlyAllowedOperatorApproval` modifier for `approve` and `setApprovalForAll` methods. */ abstract contract UpdatableOperatorFilterer { /// @dev Emitted when an operator is not allowed. error OperatorNotAllowed(address operator); /// @dev Emitted when someone other than the owner is trying to call an only owner function. error OnlyOwner(); event OperatorFilterRegistryAddressUpdated(address newRegistry); IOperatorFilterRegistry public operatorFilterRegistry; /// @dev The constructor that is called when the contract is being deployed. constructor(address _registry, address subscriptionOrRegistrantToCopy, bool subscribe) { IOperatorFilterRegistry registry = IOperatorFilterRegistry(_registry); operatorFilterRegistry = registry; // If an inheriting token contract is deployed to a network without the registry deployed, the modifier // will not revert, but the contract will need to be registered with the registry once it is deployed in // order for the modifier to filter addresses. if (address(registry).code.length > 0) { if (subscribe) { registry.registerAndSubscribe(address(this), subscriptionOrRegistrantToCopy); } else { if (subscriptionOrRegistrantToCopy != address(0)) { registry.registerAndCopyEntries(address(this), subscriptionOrRegistrantToCopy); } else { registry.register(address(this)); } } } } /** * @dev A helper function to check if the operator is allowed. */ modifier onlyAllowedOperator(address from) virtual { // Allow spending tokens from addresses with balance // Note that this still allows listings and marketplaces with escrow to transfer tokens if transferred // from an EOA. if (from != msg.sender) { _checkFilterOperator(msg.sender); } _; } /** * @dev A helper function to check if the operator approval is allowed. */ modifier onlyAllowedOperatorApproval(address operator) virtual { _checkFilterOperator(operator); _; } /** * @notice Update the address that the contract will make OperatorFilter checks against. When set to the zero * address, checks will be bypassed. OnlyOwner. */ function updateOperatorFilterRegistryAddress(address newRegistry) public virtual { if (msg.sender != owner()) { revert OnlyOwner(); } operatorFilterRegistry = IOperatorFilterRegistry(newRegistry); emit OperatorFilterRegistryAddressUpdated(newRegistry); } /** * @dev Assume the contract has an owner, but leave specific Ownable implementation up to inheriting contract. */ function owner() public view virtual returns (address); /** * @dev A helper function to check if the operator is allowed. */ function _checkFilterOperator(address operator) internal view virtual { IOperatorFilterRegistry registry = operatorFilterRegistry; // Check registry code length to facilitate testing in environments without a deployed registry. if (address(registry) != address(0) && address(registry).code.length > 0) { // under normal circumstances, this function will revert rather than return false, but inheriting contracts // may specify their own OperatorFilterRegistry implementations, which may behave differently if (!registry.isOperatorAllowed(address(this), operator)) { revert OperatorNotAllowed(operator); } } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.13; interface IOperatorFilterRegistry { /** * @notice Returns true if operator is not filtered for a given token, either by address or codeHash. Also returns * true if supplied registrant address is not registered. */ function isOperatorAllowed(address registrant, address operator) external view returns (bool); /** * @notice Registers an address with the registry. May be called by address itself or by EIP-173 owner. */ function register(address registrant) external; /** * @notice Registers an address with the registry and "subscribes" to another address's filtered operators and codeHashes. */ function registerAndSubscribe(address registrant, address subscription) external; /** * @notice Registers an address with the registry and copies the filtered operators and codeHashes from another * address without subscribing. */ function registerAndCopyEntries(address registrant, address registrantToCopy) external; /** * @notice Unregisters an address with the registry and removes its subscription. May be called by address itself or by EIP-173 owner. * Note that this does not remove any filtered addresses or codeHashes. * Also note that any subscriptions to this registrant will still be active and follow the existing filtered addresses and codehashes. */ function unregister(address addr) external; /** * @notice Update an operator address for a registered address - when filtered is true, the operator is filtered. */ function updateOperator(address registrant, address operator, bool filtered) external; /** * @notice Update multiple operators for a registered address - when filtered is true, the operators will be filtered. Reverts on duplicates. */ function updateOperators(address registrant, address[] calldata operators, bool filtered) external; /** * @notice Update a codeHash for a registered address - when filtered is true, the codeHash is filtered. */ function updateCodeHash(address registrant, bytes32 codehash, bool filtered) external; /** * @notice Update multiple codeHashes for a registered address - when filtered is true, the codeHashes will be filtered. Reverts on duplicates. */ function updateCodeHashes(address registrant, bytes32[] calldata codeHashes, bool filtered) external; /** * @notice Subscribe an address to another registrant's filtered operators and codeHashes. Will remove previous * subscription if present. * Note that accounts with subscriptions may go on to subscribe to other accounts - in this case, * subscriptions will not be forwarded. Instead the former subscription's existing entries will still be * used. */ function subscribe(address registrant, address registrantToSubscribe) external; /** * @notice Unsubscribe an address from its current subscribed registrant, and optionally copy its filtered operators and codeHashes. */ function unsubscribe(address registrant, bool copyExistingEntries) external; /** * @notice Get the subscription address of a given registrant, if any. */ function subscriptionOf(address addr) external returns (address registrant); /** * @notice Get the set of addresses subscribed to a given registrant. * Note that order is not guaranteed as updates are made. */ function subscribers(address registrant) external returns (address[] memory); /** * @notice Get the subscriber at a given index in the set of addresses subscribed to a given registrant. * Note that order is not guaranteed as updates are made. */ function subscriberAt(address registrant, uint256 index) external returns (address); /** * @notice Copy filtered operators and codeHashes from a different registrantToCopy to addr. */ function copyEntriesOf(address registrant, address registrantToCopy) external; /** * @notice Returns true if operator is filtered by a given address or its subscription. */ function isOperatorFiltered(address registrant, address operator) external returns (bool); /** * @notice Returns true if the hash of an address's code is filtered by a given address or its subscription. */ function isCodeHashOfFiltered(address registrant, address operatorWithCode) external returns (bool); /** * @notice Returns true if a codeHash is filtered by a given address or its subscription. */ function isCodeHashFiltered(address registrant, bytes32 codeHash) external returns (bool); /** * @notice Returns a list of filtered operators for a given address or its subscription. */ function filteredOperators(address addr) external returns (address[] memory); /** * @notice Returns the set of filtered codeHashes for a given address or its subscription. * Note that order is not guaranteed as updates are made. */ function filteredCodeHashes(address addr) external returns (bytes32[] memory); /** * @notice Returns the filtered operator at the given index of the set of filtered operators for a given address or * its subscription. * Note that order is not guaranteed as updates are made. */ function filteredOperatorAt(address registrant, uint256 index) external returns (address); /** * @notice Returns the filtered codeHash at the given index of the list of filtered codeHashes for a given address or * its subscription. * Note that order is not guaranteed as updates are made. */ function filteredCodeHashAt(address registrant, uint256 index) external returns (bytes32); /** * @notice Returns true if an address has registered */ function isRegistered(address addr) external returns (bool); /** * @dev Convenience method to compute the code hash of an arbitrary contract */ function codeHashOf(address addr) external returns (bytes32); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.13; address constant CANONICAL_OPERATOR_FILTER_REGISTRY_ADDRESS = 0x000000000000AAeB6D7670E522A718067333cd4E; address constant CANONICAL_CORI_SUBSCRIPTION = 0x3cc6CddA760b79bAfa08dF41ECFA224f810dCeB6;
{ "evmVersion": "istanbul", "optimizer": { "enabled": true, "runs": 200 }, "libraries": { "OrderOfInk.sol": {} }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } } }
Contract Security Audit
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IERC721A.TokenOwnership[]","name":"","type":"tuple[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes","name":"signature","type":"bytes"},{"internalType":"uint256[]","name":"tokenIds","type":"uint256[]"}],"name":"finalSession","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getApproved","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_owner","type":"address"}],"name":"getAux","outputs":[{"internalType":"uint64","name":"","type":"uint64"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes","name":"signature","type":"bytes"},{"components":[{"internalType":"address","name":"wallet","type":"address"},{"internalType":"uint8","name":"free","type":"uint8"},{"internalType":"uint8","name":"allowed","type":"uint8"}],"internalType":"struct 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IOperatorFilterRegistry","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"ownerOf","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"pauseSwitch","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"paused","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"revokeOperatorFilterRegistry","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_tokenId","type":"uint256"},{"internalType":"uint256","name":"_salePrice","type":"uint256"}],"name":"royaltyInfo","outputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"session","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"receiver","type":"address"},{"internalType":"uint96","name":"points","type":"uint96"}],"name":"setDefaultRoyalty","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"startNextSession","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"string","name":"newBaseURI","type":"string"}],"name":"tattooReveal","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"tokensOfOwner","outputs":[{"internalType":"uint256[]","name":"","type":"uint256[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"uint256","name":"start","type":"uint256"},{"internalType":"uint256","name":"stop","type":"uint256"}],"name":"tokensOfOwnerIn","outputs":[{"internalType":"uint256[]","name":"","type":"uint256[]"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"transferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newRegistry","type":"address"}],"name":"updateOperatorFilterRegistryAddress","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"withdraw","outputs":[],"stateMutability":"payable","type":"function"}]
Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
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
-----Decoded View---------------
Arg [0] : name (string): ORDEROFINK
Arg [1] : symbol (string): INK
Arg [2] : signer (address): 0x18d453e804e94Afa1C01227E90D80A7018d2C341
Arg [3] : receiver (address): 0x5e5A5450548829Ad30B10Bcb81c4Cf5Fb609FEff
-----Encoded View---------------
8 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000080
Arg [1] : 00000000000000000000000000000000000000000000000000000000000000c0
Arg [2] : 00000000000000000000000018d453e804e94afa1c01227e90d80a7018d2c341
Arg [3] : 0000000000000000000000005e5a5450548829ad30b10bcb81c4cf5fb609feff
Arg [4] : 000000000000000000000000000000000000000000000000000000000000000a
Arg [5] : 4f524445524f46494e4b00000000000000000000000000000000000000000000
Arg [6] : 0000000000000000000000000000000000000000000000000000000000000003
Arg [7] : 494e4b0000000000000000000000000000000000000000000000000000000000
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