ERC-721
Source Code
Overview
Max Total Supply
7,777 FUKS
Holders
1,196
Transfers
-
2
Market
Volume (24H)
N/A
Min Price (24H)
N/A
Max Price (24H)
N/A
Other Info
Token Contract
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| # | Exchange | Pair | Price | 24H Volume | % Volume |
|---|
Contract Name:
Indelible
Compiler Version
v0.8.14+commit.80d49f37
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;
import "erc721a/contracts/ERC721A.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/Base64.sol";
import "@openzeppelin/contracts/utils/cryptography/MerkleProof.sol";
import "@openzeppelin/contracts/utils/Address.sol";
import "./SSTORE2.sol";
import "./DynamicBuffer.sol";
import "./HelperLib.sol";
contract Indelible is ERC721A, ReentrancyGuard, Ownable {
using HelperLib for uint;
using DynamicBuffer for bytes;
struct LinkedTraitDTO {
uint[] traitA;
uint[] traitB;
}
struct TraitDTO {
string name;
string mimetype;
bytes data;
bool useExistingData;
uint existingDataIndex;
}
struct Trait {
string name;
string mimetype;
}
struct ContractData {
string name;
string description;
string image;
string banner;
string website;
uint royalties;
string royaltiesRecipient;
}
struct WithdrawRecipient {
string name;
string imageUrl;
address recipientAddress;
uint percentage;
}
mapping(uint => address[]) internal _traitDataPointers;
mapping(uint => mapping(uint => Trait)) internal _traitDetails;
mapping(uint => bool) internal _renderTokenOffChain;
mapping(uint => mapping(uint => uint[])) internal _linkedTraits;
uint private constant DEVELOPER_FEE = 250; // of 10,000 = 2.5%
uint private constant NUM_LAYERS = 8;
uint private constant MAX_BATCH_MINT = 20;
uint[][NUM_LAYERS] private TIERS;
string[] private LAYER_NAMES = [unicode"Neck", unicode"Ear", unicode"Eyes", unicode"Mouth", unicode"Nose", unicode"Head", unicode"Beard", unicode"Type"];
bool private shouldWrapSVG = true;
string private backgroundColor = "transparent";
WithdrawRecipient[] public withdrawRecipients;
bool public isContractSealed;
uint public constant maxSupply = 7777;
uint public maxPerAddress = 7;
uint public publicMintPrice = 0.000 ether;
string public baseURI = "";
bool public isPublicMintActive;
bytes32 private merkleRoot;
uint public allowListPrice = 0.000 ether;
uint public maxPerAllowList = 7;
bool public isAllowListActive;
ContractData public contractData = ContractData(unicode"Cryptofuks", unicode"Cryptofuks is a generative 7777 piece, 100% on-chain NFT collection.", "https://indeliblelabs-prod.s3.us-east-2.amazonaws.com/profile/14d2985d-23f5-4103-b0f2-85bb6ac9537a", "https://indeliblelabs-prod.s3.us-east-2.amazonaws.com/banner/14d2985d-23f5-4103-b0f2-85bb6ac9537a", "https://www.cryptofuks.com", 700, "0x407e0b2cD7C7bde8828FD579F1FBFdF8Eb75B02b");
constructor() ERC721A(unicode"Cryptofuks", unicode"FUKS") {
TIERS[0] = [1576,1593,1734,2874];
TIERS[1] = [1057,1177,1365,4178];
TIERS[2] = [334,375,385,428,506,512,521,534,575,623,664,698,789,833];
TIERS[3] = [764,842,953,1111,1254,2853];
TIERS[4] = [686,7091];
TIERS[5] = [76,98,111,113,123,132,142,154,164,174,187,193,199,200,205,219,230,280,298,335,342,426,463,520,682,824,887];
TIERS[6] = [536,787,1114,5340];
TIERS[7] = [410,432,489,838,998,1154,1438,2018];
}
modifier whenMintActive() {
require(isMintActive(), "Minting is not active");
_;
}
modifier whenUnsealed() {
require(!isContractSealed, "Contract is sealed");
_;
}
receive() external payable {
require(isPublicMintActive, "Public minting is not active");
handleMint(msg.value / publicMintPrice);
}
function rarityGen(uint _randinput, uint _rarityTier)
internal
view
returns (uint)
{
uint currentLowerBound = 0;
for (uint i = 0; i < TIERS[_rarityTier].length; i++) {
uint thisPercentage = TIERS[_rarityTier][i];
if (
_randinput >= currentLowerBound &&
_randinput < currentLowerBound + thisPercentage
) return i;
currentLowerBound = currentLowerBound + thisPercentage;
}
revert();
}
function entropyForExtraData() internal view returns (uint24) {
uint randomNumber = uint(
keccak256(
abi.encodePacked(
tx.gasprice,
block.number,
block.timestamp,
block.difficulty,
blockhash(block.number - 1),
msg.sender
)
)
);
return uint24(randomNumber);
}
function stringCompare(string memory a, string memory b) internal pure returns (bool) {
return keccak256(abi.encodePacked(a)) == keccak256(abi.encodePacked(b));
}
function tokensAreDuplicates(uint tokenIdA, uint tokenIdB) public view returns (bool) {
return stringCompare(
tokenIdToHash(tokenIdA),
tokenIdToHash(tokenIdB)
);
}
function reRollDuplicate(
uint tokenIdA,
uint tokenIdB
) public whenUnsealed {
require(tokensAreDuplicates(tokenIdA, tokenIdB), "All tokens must be duplicates");
uint largerTokenId = tokenIdA > tokenIdB ? tokenIdA : tokenIdB;
if (msg.sender != owner()) {
require(msg.sender == ownerOf(largerTokenId), "Only the token owner or contract owner can re-roll");
}
_initializeOwnershipAt(largerTokenId);
if (_exists(largerTokenId + 1)) {
_initializeOwnershipAt(largerTokenId + 1);
}
_setExtraDataAt(largerTokenId, entropyForExtraData());
}
function _extraData(
address from,
address to,
uint24 previousExtraData
) internal view virtual override returns (uint24) {
return from == address(0) ? entropyForExtraData() : previousExtraData;
}
function getTokenSeed(uint _tokenId) internal view returns (uint24) {
return _ownershipOf(_tokenId).extraData;
}
function tokenIdToHash(
uint _tokenId
) public view returns (string memory) {
require(_exists(_tokenId), "Invalid token");
// This will generate a NUM_LAYERS * 3 character string.
bytes memory hashBytes = DynamicBuffer.allocate(NUM_LAYERS * 4);
uint[] memory hash = new uint[](NUM_LAYERS);
bool[] memory modifiedLayers = new bool[](NUM_LAYERS);
for (uint i = 0; i < NUM_LAYERS; i++) {
uint traitIndex = hash[i];
if (modifiedLayers[i] == false) {
uint _randinput = uint(
uint(
keccak256(
abi.encodePacked(
getTokenSeed(_tokenId),
_tokenId,
_tokenId + i
)
)
) % maxSupply
);
traitIndex = rarityGen(_randinput, i);
hash[i] = traitIndex;
}
if (_linkedTraits[i][traitIndex].length > 0) {
hash[_linkedTraits[i][traitIndex][0]] = _linkedTraits[i][traitIndex][1];
modifiedLayers[_linkedTraits[i][traitIndex][0]] = true;
}
}
for (uint i = 0; i < hash.length; i++) {
if (hash[i] < 10) {
hashBytes.appendSafe("00");
} else if (hash[i] < 100) {
hashBytes.appendSafe("0");
}
if (hash[i] > 999) {
hashBytes.appendSafe("999");
} else {
hashBytes.appendSafe(bytes(_toString(hash[i])));
}
}
return string(hashBytes);
}
function handleMint(uint256 _count) internal whenMintActive returns (uint256) {
uint256 totalMinted = _totalMinted();
require(_count > 0, "Invalid token count");
require(totalMinted + _count <= maxSupply, "All tokens are gone");
if (isPublicMintActive) {
if (msg.sender != owner()) {
require(_numberMinted(msg.sender) + _count <= maxPerAddress, "Exceeded max mints allowed");
}
require(msg.sender == tx.origin, "EOAs only");
require(_count * publicMintPrice == msg.value, "Incorrect amount of ether sent");
}
uint256 batchCount = _count / MAX_BATCH_MINT;
uint256 remainder = _count % MAX_BATCH_MINT;
for (uint256 i = 0; i < batchCount; i++) {
_mint(msg.sender, MAX_BATCH_MINT);
}
if (remainder > 0) {
_mint(msg.sender, remainder);
}
return totalMinted;
}
function mint(uint256 _count, bytes32[] calldata merkleProof)
external
payable
nonReentrant
whenMintActive
returns (uint)
{
if (!isPublicMintActive) {
if (msg.sender != owner()) {
require(onAllowList(msg.sender, merkleProof), "Not on allow list");
require(_numberMinted(msg.sender) + _count <= maxPerAllowList, "Exceeded max mints allowed");
}
require(_count * allowListPrice == msg.value, "Incorrect amount of ether sent");
}
uint256 totalMinted = handleMint(_count);
return totalMinted;
}
function isMintActive() public view returns (bool) {
return _totalMinted() < maxSupply && (isPublicMintActive || isAllowListActive);
}
function hashToSVG(string memory _hash)
public
view
returns (string memory)
{
uint thisTraitIndex;
bytes memory svgBytes = DynamicBuffer.allocate(1024 * 128);
svgBytes.appendSafe('<svg width="1200" height="1200" viewBox="0 0 1200 1200" version="1.2" xmlns="http://www.w3.org/2000/svg" style="background-color:');
svgBytes.appendSafe(
abi.encodePacked(
backgroundColor,
";background-image:url("
)
);
for (uint i = 0; i < NUM_LAYERS - 1; i++) {
thisTraitIndex = HelperLib.parseInt(
HelperLib._substring(_hash, (i * 3), (i * 3) + 3)
);
svgBytes.appendSafe(
abi.encodePacked(
"data:",
_traitDetails[i][thisTraitIndex].mimetype,
";base64,",
Base64.encode(SSTORE2.read(_traitDataPointers[i][thisTraitIndex])),
"),url("
)
);
}
thisTraitIndex = HelperLib.parseInt(
HelperLib._substring(_hash, (NUM_LAYERS * 3) - 3, NUM_LAYERS * 3)
);
svgBytes.appendSafe(
abi.encodePacked(
"data:",
_traitDetails[NUM_LAYERS - 1][thisTraitIndex].mimetype,
";base64,",
Base64.encode(SSTORE2.read(_traitDataPointers[NUM_LAYERS - 1][thisTraitIndex])),
');background-repeat:no-repeat;background-size:contain;background-position:center;image-rendering:-webkit-optimize-contrast;-ms-interpolation-mode:nearest-neighbor;image-rendering:-moz-crisp-edges;image-rendering:pixelated;"></svg>'
)
);
return string(
abi.encodePacked(
"data:image/svg+xml;base64,",
Base64.encode(svgBytes)
)
);
}
function hashToMetadata(string memory _hash)
public
view
returns (string memory)
{
bytes memory metadataBytes = DynamicBuffer.allocate(1024 * 128);
metadataBytes.appendSafe("[");
for (uint i = 0; i < NUM_LAYERS; i++) {
uint thisTraitIndex = HelperLib.parseInt(
HelperLib._substring(_hash, (i * 3), (i * 3) + 3)
);
metadataBytes.appendSafe(
abi.encodePacked(
'{"trait_type":"',
LAYER_NAMES[i],
'","value":"',
_traitDetails[i][thisTraitIndex].name,
'"}'
)
);
if (i == NUM_LAYERS - 1) {
metadataBytes.appendSafe("]");
} else {
metadataBytes.appendSafe(",");
}
}
return string(metadataBytes);
}
function onAllowList(address addr, bytes32[] calldata merkleProof) public view returns (bool) {
return MerkleProof.verify(merkleProof, merkleRoot, keccak256(abi.encodePacked(addr)));
}
function tokenURI(uint _tokenId)
public
view
override
returns (string memory)
{
require(_exists(_tokenId), "Invalid token");
require(_traitDataPointers[0].length > 0, "Traits have not been added");
string memory tokenHash = tokenIdToHash(_tokenId);
bytes memory jsonBytes = DynamicBuffer.allocate(1024 * 128);
jsonBytes.appendSafe(unicode"{\"name\":\"Cryptofuks #");
jsonBytes.appendSafe(
abi.encodePacked(
_toString(_tokenId),
"\",\"description\":\"",
contractData.description,
"\","
)
);
if (bytes(baseURI).length > 0 && _renderTokenOffChain[_tokenId]) {
jsonBytes.appendSafe(
abi.encodePacked(
'"image":"',
baseURI,
_toString(_tokenId),
"?dna=",
tokenHash,
'&network=mainnet",'
)
);
} else {
string memory svgCode = "";
if (shouldWrapSVG) {
string memory svgString = hashToSVG(tokenHash);
svgCode = string(
abi.encodePacked(
"data:image/svg+xml;base64,",
Base64.encode(
abi.encodePacked(
'<svg width="100%" height="100%" viewBox="0 0 1200 1200" version="1.2" xmlns="http://www.w3.org/2000/svg"><image width="1200" height="1200" href="',
svgString,
'"></image></svg>'
)
)
)
);
jsonBytes.appendSafe(
abi.encodePacked(
'"svg_image_data":"',
svgString,
'",'
)
);
} else {
svgCode = hashToSVG(tokenHash);
}
jsonBytes.appendSafe(
abi.encodePacked(
'"image_data":"',
svgCode,
'",'
)
);
}
jsonBytes.appendSafe(
abi.encodePacked(
'"attributes":',
hashToMetadata(tokenHash),
"}"
)
);
return string(
abi.encodePacked(
"data:application/json;base64,",
Base64.encode(jsonBytes)
)
);
}
function contractURI()
public
view
returns (string memory)
{
return string(
abi.encodePacked(
"data:application/json;base64,",
Base64.encode(
abi.encodePacked(
'{"name":"',
contractData.name,
'","description":"',
contractData.description,
'","image":"',
contractData.image,
'","banner":"',
contractData.banner,
'","external_link":"',
contractData.website,
'","seller_fee_basis_points":',
_toString(contractData.royalties),
',"fee_recipient":"',
contractData.royaltiesRecipient,
'"}'
)
)
)
);
}
function tokenIdToSVG(uint _tokenId)
public
view
returns (string memory)
{
return hashToSVG(tokenIdToHash(_tokenId));
}
function traitDetails(uint _layerIndex, uint _traitIndex)
public
view
returns (Trait memory)
{
return _traitDetails[_layerIndex][_traitIndex];
}
function traitData(uint _layerIndex, uint _traitIndex)
public
view
returns (string memory)
{
return string(SSTORE2.read(_traitDataPointers[_layerIndex][_traitIndex]));
}
function getLinkedTraits(uint _layerIndex, uint _traitIndex)
public
view
returns (uint[] memory)
{
return _linkedTraits[_layerIndex][_traitIndex];
}
function addLayer(uint _layerIndex, TraitDTO[] memory traits)
public
onlyOwner
whenUnsealed
{
require(TIERS[_layerIndex].length == traits.length, "Traits size does not match tiers for this index");
address[] memory dataPointers = new address[](traits.length);
for (uint i = 0; i < traits.length; i++) {
if (traits[i].useExistingData) {
dataPointers[i] = dataPointers[traits[i].existingDataIndex];
} else {
dataPointers[i] = SSTORE2.write(traits[i].data);
}
_traitDetails[_layerIndex][i] = Trait(traits[i].name, traits[i].mimetype);
}
_traitDataPointers[_layerIndex] = dataPointers;
return;
}
function addTrait(uint _layerIndex, uint _traitIndex, TraitDTO memory trait)
public
onlyOwner
whenUnsealed
{
_traitDetails[_layerIndex][_traitIndex] = Trait(trait.name, trait.mimetype);
address[] memory dataPointers = _traitDataPointers[_layerIndex];
if (trait.useExistingData) {
dataPointers[_traitIndex] = dataPointers[trait.existingDataIndex];
} else {
dataPointers[_traitIndex] = SSTORE2.write(trait.data);
}
_traitDataPointers[_layerIndex] = dataPointers;
return;
}
function setLinkedTraits(LinkedTraitDTO[] memory linkedTraits)
public
onlyOwner
whenUnsealed
{
for (uint i = 0; i < linkedTraits.length; i++) {
_linkedTraits[linkedTraits[i].traitA[0]][linkedTraits[i].traitA[1]] = [linkedTraits[i].traitB[0],linkedTraits[i].traitB[1]];
}
}
function setContractData(ContractData memory _contractData) external onlyOwner whenUnsealed {
contractData = _contractData;
}
function setMaxPerAddress(uint _maxPerAddress) external onlyOwner {
maxPerAddress = _maxPerAddress;
}
function setBaseURI(string memory _baseURI) external onlyOwner {
baseURI = _baseURI;
}
function setBackgroundColor(string memory _backgroundColor) external onlyOwner whenUnsealed {
backgroundColor = _backgroundColor;
}
function setRenderOfTokenId(uint _tokenId, bool _renderOffChain) external {
require(msg.sender == ownerOf(_tokenId), "Only the token owner can set the render method");
_renderTokenOffChain[_tokenId] = _renderOffChain;
}
function setMerkleRoot(bytes32 newMerkleRoot) external onlyOwner {
merkleRoot = newMerkleRoot;
}
function setMaxPerAllowList(uint _maxPerAllowList) external onlyOwner {
maxPerAllowList = _maxPerAllowList;
}
function setAllowListPrice(uint _allowListPrice) external onlyOwner {
allowListPrice = _allowListPrice;
}
function toggleAllowListMint() external onlyOwner {
isAllowListActive = !isAllowListActive;
}
function toggleWrapSVG() external onlyOwner {
shouldWrapSVG = !shouldWrapSVG;
}
function togglePublicMint() external onlyOwner {
isPublicMintActive = !isPublicMintActive;
}
function sealContract() external whenUnsealed onlyOwner {
isContractSealed = true;
}
function withdraw() external onlyOwner nonReentrant {
uint balance = address(this).balance;
uint amount = (balance * (10000 - DEVELOPER_FEE)) / 10000;
uint distAmount = 0;
uint totalDistributionPercentage = 0;
address payable receiver = payable(owner());
address payable dev = payable(0xEA208Da933C43857683C04BC76e3FD331D7bfdf7);
Address.sendValue(dev, balance - amount);
if (withdrawRecipients.length > 0) {
for (uint i = 0; i < withdrawRecipients.length; i++) {
totalDistributionPercentage = totalDistributionPercentage + withdrawRecipients[i].percentage;
address payable currRecepient = payable(withdrawRecipients[i].recipientAddress);
distAmount = (amount * (10000 - withdrawRecipients[i].percentage)) / 10000;
Address.sendValue(currRecepient, amount - distAmount);
}
}
balance = address(this).balance;
Address.sendValue(receiver, balance);
}
}// SPDX-License-Identifier: MIT
// Copyright (c) 2021 the ethier authors (github.com/divergencetech/ethier)
pragma solidity >=0.8.0;
/// @title DynamicBuffer
/// @author David Huber (@cxkoda) and Simon Fremaux (@dievardump). See also
/// https://raw.githubusercontent.com/dievardump/solidity-dynamic-buffer
/// @notice This library is used to allocate a big amount of container memory
// which will be subsequently filled without needing to reallocate
/// memory.
/// @dev First, allocate memory.
/// Then use `buffer.appendUnchecked(theBytes)` or `appendSafe()` if
/// bounds checking is required.
library DynamicBuffer {
/// @notice Allocates container space for the DynamicBuffer
/// @param capacity The intended max amount of bytes in the buffer
/// @return buffer The memory location of the buffer
/// @dev Allocates `capacity + 0x60` bytes of space
/// The buffer array starts at the first container data position,
/// (i.e. `buffer = container + 0x20`)
function allocate(uint256 capacity)
internal
pure
returns (bytes memory buffer)
{
assembly {
// Get next-free memory address
let container := mload(0x40)
// Allocate memory by setting a new next-free address
{
// Add 2 x 32 bytes in size for the two length fields
// Add 32 bytes safety space for 32B chunked copy
let size := add(capacity, 0x60)
let newNextFree := add(container, size)
mstore(0x40, newNextFree)
}
// Set the correct container length
{
let length := add(capacity, 0x40)
mstore(container, length)
}
// The buffer starts at idx 1 in the container (0 is length)
buffer := add(container, 0x20)
// Init content with length 0
mstore(buffer, 0)
}
return buffer;
}
/// @notice Appends data to buffer, and update buffer length
/// @param buffer the buffer to append the data to
/// @param data the data to append
/// @dev Does not perform out-of-bound checks (container capacity)
/// for efficiency.
function appendUnchecked(bytes memory buffer, bytes memory data)
internal
pure
{
assembly {
let length := mload(data)
for {
data := add(data, 0x20)
let dataEnd := add(data, length)
let copyTo := add(buffer, add(mload(buffer), 0x20))
} lt(data, dataEnd) {
data := add(data, 0x20)
copyTo := add(copyTo, 0x20)
} {
// Copy 32B chunks from data to buffer.
// This may read over data array boundaries and copy invalid
// bytes, which doesn't matter in the end since we will
// later set the correct buffer length, and have allocated an
// additional word to avoid buffer overflow.
mstore(copyTo, mload(data))
}
// Update buffer length
mstore(buffer, add(mload(buffer), length))
}
}
/// @notice Appends data to buffer, and update buffer length
/// @param buffer the buffer to append the data to
/// @param data the data to append
/// @dev Performs out-of-bound checks and calls `appendUnchecked`.
function appendSafe(bytes memory buffer, bytes memory data) internal pure {
uint256 capacity;
uint256 length;
assembly {
capacity := sub(mload(sub(buffer, 0x20)), 0x40)
length := mload(buffer)
}
require(
length + data.length <= capacity,
"DynamicBuffer: Appending out of bounds."
);
appendUnchecked(buffer, data);
}
}// SPDX-License-Identifier: MIT
pragma solidity ^0.8.14;
library HelperLib {
function parseInt(string memory _a)
internal
pure
returns (uint8 _parsedInt)
{
bytes memory bresult = bytes(_a);
uint8 mint = 0;
for (uint8 i = 0; i < bresult.length; i++) {
if (
(uint8(uint8(bresult[i])) >= 48) &&
(uint8(uint8(bresult[i])) <= 57)
) {
mint *= 10;
mint += uint8(bresult[i]) - 48;
}
}
return mint;
}
function _substring(
string memory str,
uint256 startIndex,
uint256 endIndex
) internal pure returns (string memory) {
bytes memory strBytes = bytes(str);
bytes memory result = new bytes(endIndex - startIndex);
for (uint256 i = startIndex; i < endIndex; i++) {
result[i - startIndex] = strBytes[i];
}
return string(result);
}
}// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./utils/Bytecode.sol"; /** @title A key-value storage with auto-generated keys for storing chunks of data with a lower write & read cost. @author Agustin Aguilar <[email protected]> Readme: https://github.com/0xsequence/sstore2#readme */ library SSTORE2 { error WriteError(); /** @notice Stores `_data` and returns `pointer` as key for later retrieval @dev The pointer is a contract address with `_data` as code @param _data to be written @return pointer Pointer to the written `_data` */ function write(bytes memory _data) internal returns (address pointer) { // Append 00 to _data so contract can't be called // Build init code bytes memory code = Bytecode.creationCodeFor( abi.encodePacked( hex'00', _data ) ); // Deploy contract using create assembly { pointer := create(0, add(code, 32), mload(code)) } // Address MUST be non-zero if (pointer == address(0)) revert WriteError(); } /** @notice Reads the contents of the `_pointer` code as data, skips the first byte @dev The function is intended for reading pointers generated by `write` @param _pointer to be read @return data read from `_pointer` contract */ function read(address _pointer) internal view returns (bytes memory) { return Bytecode.codeAt(_pointer, 1, type(uint256).max); } /** @notice Reads the contents of the `_pointer` code as data, skips the first byte @dev The function is intended for reading pointers generated by `write` @param _pointer to be read @param _start number of bytes to skip @return data read from `_pointer` contract */ function read(address _pointer, uint256 _start) internal view returns (bytes memory) { return Bytecode.codeAt(_pointer, _start + 1, type(uint256).max); } /** @notice Reads the contents of the `_pointer` code as data, skips the first byte @dev The function is intended for reading pointers generated by `write` @param _pointer to be read @param _start number of bytes to skip @param _end index before which to end extraction @return data read from `_pointer` contract */ function read(address _pointer, uint256 _start, uint256 _end) internal view returns (bytes memory) { return Bytecode.codeAt(_pointer, _start + 1, _end + 1); } }
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
library Bytecode {
error InvalidCodeAtRange(uint256 _size, uint256 _start, uint256 _end);
/**
@notice Generate a creation code that results on a contract with `_code` as bytecode
@param _code The returning value of the resulting `creationCode`
@return creationCode (constructor) for new contract
*/
function creationCodeFor(bytes memory _code) internal pure returns (bytes memory) {
/*
0x00 0x63 0x63XXXXXX PUSH4 _code.length size
0x01 0x80 0x80 DUP1 size size
0x02 0x60 0x600e PUSH1 14 14 size size
0x03 0x60 0x6000 PUSH1 00 0 14 size size
0x04 0x39 0x39 CODECOPY size
0x05 0x60 0x6000 PUSH1 00 0 size
0x06 0xf3 0xf3 RETURN
<CODE>
*/
return abi.encodePacked(
hex"63",
uint32(_code.length),
hex"80_60_0E_60_00_39_60_00_F3",
_code
);
}
/**
@notice Returns the size of the code on a given address
@param _addr Address that may or may not contain code
@return size of the code on the given `_addr`
*/
function codeSize(address _addr) internal view returns (uint256 size) {
assembly { size := extcodesize(_addr) }
}
/**
@notice Returns the code of a given address
@dev It will fail if `_end < _start`
@param _addr Address that may or may not contain code
@param _start number of bytes of code to skip on read
@param _end index before which to end extraction
@return oCode read from `_addr` deployed bytecode
Forked from: https://gist.github.com/KardanovIR/fe98661df9338c842b4a30306d507fbd
*/
function codeAt(address _addr, uint256 _start, uint256 _end) internal view returns (bytes memory oCode) {
uint256 csize = codeSize(_addr);
if (csize == 0) return bytes("");
if (_start > csize) return bytes("");
if (_end < _start) revert InvalidCodeAtRange(csize, _start, _end);
unchecked {
uint256 reqSize = _end - _start;
uint256 maxSize = csize - _start;
uint256 size = maxSize < reqSize ? maxSize : reqSize;
assembly {
// allocate output byte array - this could also be done without assembly
// by using o_code = new bytes(size)
oCode := mload(0x40)
// new "memory end" including padding
mstore(0x40, add(oCode, and(add(add(size, 0x20), 0x1f), not(0x1f))))
// store length in memory
mstore(oCode, size)
// actually retrieve the code, this needs assembly
extcodecopy(_addr, add(oCode, 0x20), _start, size)
}
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)
pragma solidity ^0.8.0;
import "../utils/Context.sol";
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_transferOwnership(_msgSender());
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
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 (security/ReentrancyGuard.sol)
pragma solidity ^0.8.0;
/**
* @dev Contract module that helps prevent reentrant calls to a function.
*
* Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
* available, which can be applied to functions to make sure there are no nested
* (reentrant) calls to them.
*
* Note that because there is a single `nonReentrant` guard, functions marked as
* `nonReentrant` may not call one another. This can be worked around by making
* those functions `private`, and then adding `external` `nonReentrant` entry
* points to them.
*
* TIP: If you would like to learn more about reentrancy and alternative ways
* to protect against it, check out our blog post
* https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
*/
abstract contract ReentrancyGuard {
// Booleans are more expensive than uint256 or any type that takes up a full
// word because each write operation emits an extra SLOAD to first read the
// slot's contents, replace the bits taken up by the boolean, and then write
// back. This is the compiler's defense against contract upgrades and
// pointer aliasing, and it cannot be disabled.
// The values being non-zero value makes deployment a bit more expensive,
// but in exchange the refund on every call to nonReentrant will be lower in
// amount. Since refunds are capped to a percentage of the total
// transaction's gas, it is best to keep them low in cases like this one, to
// increase the likelihood of the full refund coming into effect.
uint256 private constant _NOT_ENTERED = 1;
uint256 private constant _ENTERED = 2;
uint256 private _status;
constructor() {
_status = _NOT_ENTERED;
}
/**
* @dev Prevents a contract from calling itself, directly or indirectly.
* Calling a `nonReentrant` function from another `nonReentrant`
* function is not supported. It is possible to prevent this from happening
* by making the `nonReentrant` function external, and making it call a
* `private` function that does the actual work.
*/
modifier nonReentrant() {
// On the first call to nonReentrant, _notEntered will be true
require(_status != _ENTERED, "ReentrancyGuard: reentrant call");
// Any calls to nonReentrant after this point will fail
_status = _ENTERED;
_;
// By storing the original value once again, a refund is triggered (see
// https://eips.ethereum.org/EIPS/eip-2200)
_status = _NOT_ENTERED;
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol)
pragma solidity ^0.8.1;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*
* [IMPORTANT]
* ====
* You shouldn't rely on `isContract` to protect against flash loan attacks!
*
* Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
* like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
* constructor.
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize/address.code.length, which returns 0
// for contracts in construction, since the code is only stored at the end
// of the constructor execution.
return account.code.length > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (utils/Base64.sol)
pragma solidity ^0.8.0;
/**
* @dev Provides a set of functions to operate with Base64 strings.
*
* _Available since v4.5._
*/
library Base64 {
/**
* @dev Base64 Encoding/Decoding Table
*/
string internal constant _TABLE = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
/**
* @dev Converts a `bytes` to its Bytes64 `string` representation.
*/
function encode(bytes memory data) internal pure returns (string memory) {
/**
* Inspired by Brecht Devos (Brechtpd) implementation - MIT licence
* https://github.com/Brechtpd/base64/blob/e78d9fd951e7b0977ddca77d92dc85183770daf4/base64.sol
*/
if (data.length == 0) return "";
// Loads the table into memory
string memory table = _TABLE;
// Encoding takes 3 bytes chunks of binary data from `bytes` data parameter
// and split into 4 numbers of 6 bits.
// The final Base64 length should be `bytes` data length multiplied by 4/3 rounded up
// - `data.length + 2` -> Round up
// - `/ 3` -> Number of 3-bytes chunks
// - `4 *` -> 4 characters for each chunk
string memory result = new string(4 * ((data.length + 2) / 3));
assembly {
// Prepare the lookup table (skip the first "length" byte)
let tablePtr := add(table, 1)
// Prepare result pointer, jump over length
let resultPtr := add(result, 32)
// Run over the input, 3 bytes at a time
for {
let dataPtr := data
let endPtr := add(data, mload(data))
} lt(dataPtr, endPtr) {
} {
// Advance 3 bytes
dataPtr := add(dataPtr, 3)
let input := mload(dataPtr)
// To write each character, shift the 3 bytes (18 bits) chunk
// 4 times in blocks of 6 bits for each character (18, 12, 6, 0)
// and apply logical AND with 0x3F which is the number of
// the previous character in the ASCII table prior to the Base64 Table
// The result is then added to the table to get the character to write,
// and finally write it in the result pointer but with a left shift
// of 256 (1 byte) - 8 (1 ASCII char) = 248 bits
mstore8(resultPtr, mload(add(tablePtr, and(shr(18, input), 0x3F))))
resultPtr := add(resultPtr, 1) // Advance
mstore8(resultPtr, mload(add(tablePtr, and(shr(12, input), 0x3F))))
resultPtr := add(resultPtr, 1) // Advance
mstore8(resultPtr, mload(add(tablePtr, and(shr(6, input), 0x3F))))
resultPtr := add(resultPtr, 1) // Advance
mstore8(resultPtr, mload(add(tablePtr, and(input, 0x3F))))
resultPtr := add(resultPtr, 1) // Advance
}
// When data `bytes` is not exactly 3 bytes long
// it is padded with `=` characters at the end
switch mod(mload(data), 3)
case 1 {
mstore8(sub(resultPtr, 1), 0x3d)
mstore8(sub(resultPtr, 2), 0x3d)
}
case 2 {
mstore8(sub(resultPtr, 1), 0x3d)
}
}
return result;
}
}// 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 v4.6.0) (utils/cryptography/MerkleProof.sol)
pragma solidity ^0.8.0;
/**
* @dev These functions deal with verification of Merkle Trees proofs.
*
* The proofs can be generated using the JavaScript library
* https://github.com/miguelmota/merkletreejs[merkletreejs].
* Note: the hashing algorithm should be keccak256 and pair sorting should be enabled.
*
* See `test/utils/cryptography/MerkleProof.test.js` for some examples.
*
* WARNING: You should avoid using leaf values that are 64 bytes long prior to
* hashing, or use a hash function other than keccak256 for hashing leaves.
* This is because the concatenation of a sorted pair of internal nodes in
* the merkle tree could be reinterpreted as a leaf value.
*/
library MerkleProof {
/**
* @dev Returns true if a `leaf` can be proved to be a part of a Merkle tree
* defined by `root`. For this, a `proof` must be provided, containing
* sibling hashes on the branch from the leaf to the root of the tree. Each
* pair of leaves and each pair of pre-images are assumed to be sorted.
*/
function verify(
bytes32[] memory proof,
bytes32 root,
bytes32 leaf
) internal pure returns (bool) {
return processProof(proof, leaf) == root;
}
/**
* @dev Returns the rebuilt hash obtained by traversing a Merkle tree up
* from `leaf` using `proof`. A `proof` is valid if and only if the rebuilt
* hash matches the root of the tree. When processing the proof, the pairs
* of leafs & pre-images are assumed to be sorted.
*
* _Available since v4.4._
*/
function processProof(bytes32[] memory proof, bytes32 leaf) internal pure returns (bytes32) {
bytes32 computedHash = leaf;
for (uint256 i = 0; i < proof.length; i++) {
bytes32 proofElement = proof[i];
if (computedHash <= proofElement) {
// Hash(current computed hash + current element of the proof)
computedHash = _efficientHash(computedHash, proofElement);
} else {
// Hash(current element of the proof + current computed hash)
computedHash = _efficientHash(proofElement, computedHash);
}
}
return computedHash;
}
function _efficientHash(bytes32 a, bytes32 b) private pure returns (bytes32 value) {
assembly {
mstore(0x00, a)
mstore(0x20, b)
value := keccak256(0x00, 0x40)
}
}
}// SPDX-License-Identifier: MIT
// ERC721A Contracts v4.1.0
// Creator: Chiru Labs
pragma solidity ^0.8.4;
import './IERC721A.sol';
/**
* @dev ERC721 token receiver interface.
*/
interface ERC721A__IERC721Receiver {
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}
/**
* @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard,
* including the Metadata extension. Built to optimize for lower gas during batch mints.
*
* Assumes serials are sequentially minted starting at `_startTokenId()`
* (defaults to 0, e.g. 0, 1, 2, 3..).
*
* Assumes that an owner cannot have more than 2**64 - 1 (max value of uint64) of supply.
*
* Assumes that the maximum token id cannot exceed 2**256 - 1 (max value of uint256).
*/
contract ERC721A is IERC721A {
// 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 tokenId of the next token 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 => address) private _tokenApprovals;
// Mapping from owner to operator approvals
mapping(address => mapping(address => bool)) private _operatorApprovals;
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
_currentIndex = _startTokenId();
}
/**
* @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 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 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 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 returns (uint256) {
return _burnCounter;
}
/**
* @dev See {IERC165-supportsInterface}.
*/
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: 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.
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view 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 {
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;
}
/**
* 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 ownership that has an address and is not burned
// before an ownership that does not have an address and is not burned.
// Hence, curr will not underflow.
//
// We can directly compare the packed value.
// If the address is zero, packed is zero.
while (packed == 0) {
packed = _packedOwnerships[--curr];
}
return packed;
}
}
}
revert OwnerQueryForNonexistentToken();
}
/**
* 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);
}
/**
* Returns the unpacked `TokenOwnership` struct at `index`.
*/
function _ownershipAt(uint256 index) internal view returns (TokenOwnership memory) {
return _unpackedOwnership(_packedOwnerships[index]);
}
/**
* @dev Initializes the ownership slot minted at `index` for efficiency purposes.
*/
function _initializeOwnershipAt(uint256 index) internal {
if (_packedOwnerships[index] == 0) {
_packedOwnerships[index] = _packedOwnershipOf(index);
}
}
/**
* Gas spent here starts off proportional to the maximum mint batch size.
* It gradually moves to O(1) as tokens get transferred around in the collection over time.
*/
function _ownershipOf(uint256 tokenId) internal view returns (TokenOwnership memory) {
return _unpackedOwnership(_packedOwnershipOf(tokenId));
}
/**
* @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 See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view override returns (address) {
return address(uint160(_packedOwnershipOf(tokenId)));
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
if (!_exists(tokenId)) revert URIQueryForNonexistentToken();
string memory baseURI = _baseURI();
return bytes(baseURI).length != 0 ? string(abi.encodePacked(baseURI, _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 '';
}
/**
* @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))
}
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public override {
address owner = ownerOf(tokenId);
if (_msgSenderERC721A() != owner)
if (!isApprovedForAll(owner, _msgSenderERC721A())) {
revert ApprovalCallerNotOwnerNorApproved();
}
_tokenApprovals[tokenId] = to;
emit Approval(owner, to, tokenId);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view override returns (address) {
if (!_exists(tokenId)) revert ApprovalQueryForNonexistentToken();
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
if (operator == _msgSenderERC721A()) revert ApproveToCaller();
_operatorApprovals[_msgSenderERC721A()][operator] = approved;
emit ApprovalForAll(_msgSenderERC721A(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
safeTransferFrom(from, to, tokenId, '');
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes memory _data
) public virtual override {
transferFrom(from, to, tokenId);
if (to.code.length != 0)
if (!_checkContractOnERC721Received(from, to, tokenId, _data)) {
revert TransferToNonERC721ReceiverImplementer();
}
}
/**
* @dev Returns whether `tokenId` exists.
*
* Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
*
* Tokens start existing when they are minted (`_mint`),
*/
function _exists(uint256 tokenId) internal view returns (bool) {
return
_startTokenId() <= tokenId &&
tokenId < _currentIndex && // If within bounds,
_packedOwnerships[tokenId] & BITMASK_BURNED == 0; // and not burned.
}
/**
* @dev Equivalent to `_safeMint(to, quantity, '')`.
*/
function _safeMint(address to, uint256 quantity) internal {
_safeMint(to, quantity, '');
}
/**
* @dev Safely mints `quantity` tokens and transfers them to `to`.
*
* Requirements:
*
* - If `to` refers to a smart contract, it must implement
* {IERC721Receiver-onERC721Received}, which is called for each safe transfer.
* - `quantity` must be greater than 0.
*
* See {_mint}.
*
* Emits a {Transfer} event for each mint.
*/
function _safeMint(
address to,
uint256 quantity,
bytes memory _data
) internal {
_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 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 {
uint256 startTokenId = _currentIndex;
if (to == address(0)) revert MintToZeroAddress();
if (quantity == 0) revert MintZeroQuantity();
_beforeTokenTransfers(address(0), to, startTokenId, quantity);
// Overflows are incredibly unrealistic.
// `balance` 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 tokenId = startTokenId;
uint256 end = startTokenId + quantity;
do {
emit Transfer(address(0), to, tokenId++);
} while (tokenId < end);
_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 {
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 Returns the storage slot and value for the approved address of `tokenId`.
*/
function _getApprovedAddress(uint256 tokenId)
private
view
returns (uint256 approvedAddressSlot, address approvedAddress)
{
mapping(uint256 => address) storage tokenApprovalsPtr = _tokenApprovals;
// The following is equivalent to `approvedAddress = _tokenApprovals[tokenId]`.
assembly {
// Compute the slot.
mstore(0x00, tokenId)
mstore(0x20, tokenApprovalsPtr.slot)
approvedAddressSlot := keccak256(0x00, 0x40)
// Load the slot's value from storage.
approvedAddress := sload(approvedAddressSlot)
}
}
/**
* @dev Returns whether the `approvedAddress` is equals to `from` or `msgSender`.
*/
function _isOwnerOrApproved(
address approvedAddress,
address from,
address msgSender
) private pure returns (bool result) {
assembly {
// Mask `from` to the lower 160 bits, in case the upper bits somehow aren't clean.
from := and(from, BITMASK_ADDRESS)
// Mask `msgSender` to the lower 160 bits, in case the upper bits somehow aren't clean.
msgSender := and(msgSender, BITMASK_ADDRESS)
// `msgSender == from || msgSender == approvedAddress`.
result := or(eq(msgSender, from), eq(msgSender, approvedAddress))
}
}
/**
* @dev Transfers `tokenId` from `from` to `to`.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
*
* Emits a {Transfer} event.
*/
function 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) = _getApprovedAddress(tokenId);
// The nested ifs save around 20+ gas over a compound boolean condition.
if (!_isOwnerOrApproved(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 `_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) = _getApprovedAddress(tokenId);
if (approvalCheck) {
// The nested ifs save around 20+ gas over a compound boolean condition.
if (!_isOwnerOrApproved(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++;
}
}
/**
* @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target contract.
*
* @param from address representing the previous owner of the given token ID
* @param to target address that will receive the tokens
* @param tokenId uint256 ID of the token to be transferred
* @param _data bytes optional data to send along with the call
* @return bool whether the call correctly returned the expected magic value
*/
function _checkContractOnERC721Received(
address from,
address to,
uint256 tokenId,
bytes memory _data
) private returns (bool) {
try 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))
}
}
}
}
/**
* @dev Directly sets the extra data for the ownership data `index`.
*/
function _setExtraDataAt(uint256 index, uint24 extraData) internal {
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 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;
}
/**
* @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 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 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 returns (string memory ptr) {
assembly {
// The maximum value of a uint256 contains 78 digits (1 byte per digit),
// but we allocate 128 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: 32 + 3 * 32 = 128.
ptr := add(mload(0x40), 128)
// Update the free memory pointer to allocate.
mstore(0x40, ptr)
// Cache the end of the memory to calculate the length later.
let end := ptr
// We write the string from the rightmost digit to the leftmost digit.
// The following is essentially a do-while loop that also handles the zero case.
// Costs a bit more than early returning for the zero case,
// but cheaper in terms of deployment and overall runtime costs.
for {
// Initialize and perform the first pass without check.
let temp := value
// Move the pointer 1 byte leftwards to point to an empty character slot.
ptr := sub(ptr, 1)
// Write the character to the pointer. 48 is the ASCII index of '0'.
mstore8(ptr, add(48, mod(temp, 10)))
temp := div(temp, 10)
} temp {
// Keep dividing `temp` until zero.
temp := div(temp, 10)
} {
// Body of the for loop.
ptr := sub(ptr, 1)
mstore8(ptr, add(48, mod(temp, 10)))
}
let length := sub(end, ptr)
// Move the pointer 32 bytes leftwards to make room for the length.
ptr := sub(ptr, 32)
// Store the length.
mstore(ptr, length)
}
}
}// SPDX-License-Identifier: MIT
// ERC721A Contracts v4.1.0
// Creator: Chiru Labs
pragma solidity ^0.8.4;
/**
* @dev Interface of an ERC721A compliant contract.
*/
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();
struct TokenOwnership {
// The address of the owner.
address addr;
// Keeps track of the start time of ownership with minimal overhead for tokenomics.
uint64 startTimestamp;
// Whether the token has been burned.
bool burned;
// Arbitrary data similar to `startTimestamp` that can be set through `_extraData`.
uint24 extraData;
}
/**
* @dev Returns the total amount of tokens stored by the contract.
*
* Burned tokens are calculated here, use `_totalMinted()` if you want to count just minted tokens.
*/
function totalSupply() external view returns (uint256);
// ==============================
// 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);
// ==============================
// 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`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes calldata data
) external;
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must 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
) external;
/**
* @dev Transfers `tokenId` token from `from` to `to`.
*
* WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/
function approve(address to, uint256 tokenId) external;
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool _approved) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
// ==============================
// 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 standard. See `_mintERC2309` for more details.
*/
event ConsecutiveTransfer(uint256 indexed fromTokenId, uint256 toTokenId, address indexed from, address indexed to);
}{
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
},
"optimizer": {
"enabled": true,
"runs": 200
},
"metadata": {
"useLiteralContent": true
}
}Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
Contract ABI
API[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"ApprovalCallerNotOwnerNorApproved","type":"error"},{"inputs":[],"name":"ApprovalQueryForNonexistentToken","type":"error"},{"inputs":[],"name":"ApproveToCaller","type":"error"},{"inputs":[],"name":"BalanceQueryForZeroAddress","type":"error"},{"inputs":[{"internalType":"uint256","name":"_size","type":"uint256"},{"internalType":"uint256","name":"_start","type":"uint256"},{"internalType":"uint256","name":"_end","type":"uint256"}],"name":"InvalidCodeAtRange","type":"error"},{"inputs":[],"name":"MintERC2309QuantityExceedsLimit","type":"error"},{"inputs":[],"name":"MintToZeroAddress","type":"error"},{"inputs":[],"name":"MintZeroQuantity","type":"error"},{"inputs":[],"name":"OwnerQueryForNonexistentToken","type":"error"},{"inputs":[],"name":"OwnershipNotInitializedForExtraData","type":"error"},{"inputs":[],"name":"TransferCallerNotOwnerNorApproved","type":"error"},{"inputs":[],"name":"TransferFromIncorrectOwner","type":"error"},{"inputs":[],"name":"TransferToNonERC721ReceiverImplementer","type":"error"},{"inputs":[],"name":"TransferToZeroAddress","type":"error"},{"inputs":[],"name":"URIQueryForNonexistentToken","type":"error"},{"inputs":[],"name":"WriteError","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"approved","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"operator","type":"address"},{"indexed":false,"internalType":"bool","name":"approved","type":"bool"}],"name":"ApprovalForAll","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"uint256","name":"fromTokenId","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"toTokenId","type":"uint256"},{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"}],"name":"ConsecutiveTransfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":true,"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[{"internalType":"uint256","name":"_layerIndex","type":"uint256"},{"components":[{"internalType":"string","name":"name","type":"string"},{"internalType":"string","name":"mimetype","type":"string"},{"internalType":"bytes","name":"data","type":"bytes"},{"internalType":"bool","name":"useExistingData","type":"bool"},{"internalType":"uint256","name":"existingDataIndex","type":"uint256"}],"internalType":"struct Indelible.TraitDTO[]","name":"traits","type":"tuple[]"}],"name":"addLayer","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_layerIndex","type":"uint256"},{"internalType":"uint256","name":"_traitIndex","type":"uint256"},{"components":[{"internalType":"string","name":"name","type":"string"},{"internalType":"string","name":"mimetype","type":"string"},{"internalType":"bytes","name":"data","type":"bytes"},{"internalType":"bool","name":"useExistingData","type":"bool"},{"internalType":"uint256","name":"existingDataIndex","type":"uint256"}],"internalType":"struct Indelible.TraitDTO","name":"trait","type":"tuple"}],"name":"addTrait","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"allowListPrice","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"approve","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"baseURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"contractData","outputs":[{"internalType":"string","name":"name","type":"string"},{"internalType":"string","name":"description","type":"string"},{"internalType":"string","name":"image","type":"string"},{"internalType":"string","name":"banner","type":"string"},{"internalType":"string","name":"website","type":"string"},{"internalType":"uint256","name":"royalties","type":"uint256"},{"internalType":"string","name":"royaltiesRecipient","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"contractURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getApproved","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_layerIndex","type":"uint256"},{"internalType":"uint256","name":"_traitIndex","type":"uint256"}],"name":"getLinkedTraits","outputs":[{"internalType":"uint256[]","name":"","type":"uint256[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"string","name":"_hash","type":"string"}],"name":"hashToMetadata","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"string","name":"_hash","type":"string"}],"name":"hashToSVG","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"isAllowListActive","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"operator","type":"address"}],"name":"isApprovedForAll","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"isContractSealed","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"isMintActive","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"isPublicMintActive","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"maxPerAddress","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"maxPerAllowList","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"maxSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_count","type":"uint256"},{"internalType":"bytes32[]","name":"merkleProof","type":"bytes32[]"}],"name":"mint","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"addr","type":"address"},{"internalType":"bytes32[]","name":"merkleProof","type":"bytes32[]"}],"name":"onAllowList","outputs":[{"internalType":"bool","name":"","type":"bool"}],"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":"publicMintPrice","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenIdA","type":"uint256"},{"internalType":"uint256","name":"tokenIdB","type":"uint256"}],"name":"reRollDuplicate","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","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":"sealContract","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_allowListPrice","type":"uint256"}],"name":"setAllowListPrice","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"_backgroundColor","type":"string"}],"name":"setBackgroundColor","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"_baseURI","type":"string"}],"name":"setBaseURI","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"components":[{"internalType":"string","name":"name","type":"string"},{"internalType":"string","name":"description","type":"string"},{"internalType":"string","name":"image","type":"string"},{"internalType":"string","name":"banner","type":"string"},{"internalType":"string","name":"website","type":"string"},{"internalType":"uint256","name":"royalties","type":"uint256"},{"internalType":"string","name":"royaltiesRecipient","type":"string"}],"internalType":"struct Indelible.ContractData","name":"_contractData","type":"tuple"}],"name":"setContractData","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"components":[{"internalType":"uint256[]","name":"traitA","type":"uint256[]"},{"internalType":"uint256[]","name":"traitB","type":"uint256[]"}],"internalType":"struct Indelible.LinkedTraitDTO[]","name":"linkedTraits","type":"tuple[]"}],"name":"setLinkedTraits","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_maxPerAddress","type":"uint256"}],"name":"setMaxPerAddress","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_maxPerAllowList","type":"uint256"}],"name":"setMaxPerAllowList","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"newMerkleRoot","type":"bytes32"}],"name":"setMerkleRoot","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_tokenId","type":"uint256"},{"internalType":"bool","name":"_renderOffChain","type":"bool"}],"name":"setRenderOfTokenId","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":[],"name":"toggleAllowListMint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"togglePublicMint","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"toggleWrapSVG","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_tokenId","type":"uint256"}],"name":"tokenIdToHash","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_tokenId","type":"uint256"}],"name":"tokenIdToSVG","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_tokenId","type":"uint256"}],"name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenIdA","type":"uint256"},{"internalType":"uint256","name":"tokenIdB","type":"uint256"}],"name":"tokensAreDuplicates","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_layerIndex","type":"uint256"},{"internalType":"uint256","name":"_traitIndex","type":"uint256"}],"name":"traitData","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_layerIndex","type":"uint256"},{"internalType":"uint256","name":"_traitIndex","type":"uint256"}],"name":"traitDetails","outputs":[{"components":[{"internalType":"string","name":"name","type":"string"},{"internalType":"string","name":"mimetype","type":"string"}],"internalType":"struct Indelible.Trait","name":"","type":"tuple"}],"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":[],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"withdrawRecipients","outputs":[{"internalType":"string","name":"name","type":"string"},{"internalType":"string","name":"imageUrl","type":"string"},{"internalType":"address","name":"recipientAddress","type":"address"},{"internalType":"uint256","name":"percentage","type":"uint256"}],"stateMutability":"view","type":"function"},{"stateMutability":"payable","type":"receive"}]Contract Creation Code
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