Source Code
More Info
Private Name Tags
ContractCreator
TokenTracker
Latest 25 from a total of 3,805 transactions
| Transaction Hash |
Method
|
Block
|
From
|
|
To
|
||||
|---|---|---|---|---|---|---|---|---|---|
| Set Approval For... | 24630496 | 5 days ago | IN | 0 ETH | 0.00000365 | ||||
| Set Approval For... | 24574500 | 13 days ago | IN | 0 ETH | 0.00000108 | ||||
| Safe Transfer Fr... | 24456151 | 29 days ago | IN | 0 ETH | 0.0000051 | ||||
| Set Approval For... | 24346986 | 44 days ago | IN | 0 ETH | 0.00000335 | ||||
| Set Approval For... | 24313265 | 49 days ago | IN | 0 ETH | 0.00009645 | ||||
| Set Approval For... | 23229866 | 201 days ago | IN | 0 ETH | 0.0000175 | ||||
| Set Approval For... | 22956253 | 239 days ago | IN | 0 ETH | 0.00006166 | ||||
| Set Approval For... | 22663352 | 280 days ago | IN | 0 ETH | 0.00002379 | ||||
| Set Approval For... | 22545042 | 296 days ago | IN | 0 ETH | 0.00009089 | ||||
| Set Approval For... | 22453562 | 309 days ago | IN | 0 ETH | 0.00011892 | ||||
| Set Approval For... | 22044071 | 366 days ago | IN | 0 ETH | 0.0000247 | ||||
| Set Approval For... | 22044070 | 366 days ago | IN | 0 ETH | 0.00002434 | ||||
| Set Approval For... | 21873275 | 390 days ago | IN | 0 ETH | 0.00002964 | ||||
| Set Approval For... | 21862661 | 392 days ago | IN | 0 ETH | 0.00003301 | ||||
| Set Approval For... | 21862485 | 392 days ago | IN | 0 ETH | 0.00006207 | ||||
| Set Approval For... | 21793888 | 401 days ago | IN | 0 ETH | 0.00003452 | ||||
| Safe Transfer Fr... | 21721211 | 412 days ago | IN | 0 ETH | 0.00015489 | ||||
| Safe Transfer Fr... | 21721210 | 412 days ago | IN | 0 ETH | 0.00017548 | ||||
| Safe Transfer Fr... | 21721209 | 412 days ago | IN | 0 ETH | 0.00015966 | ||||
| Set Approval For... | 21481432 | 445 days ago | IN | 0 ETH | 0.00024245 | ||||
| Set Approval For... | 21469657 | 447 days ago | IN | 0 ETH | 0.00027029 | ||||
| Set Approval For... | 21338255 | 465 days ago | IN | 0 ETH | 0.00083358 | ||||
| Set Approval For... | 21104541 | 498 days ago | IN | 0 ETH | 0.00007845 | ||||
| Transfer From | 20749267 | 547 days ago | IN | 0 ETH | 0.0001255 | ||||
| Transfer From | 20749262 | 547 days ago | IN | 0 ETH | 0.00015912 |
Latest 25 internal transactions (View All)
Advanced mode:
| Parent Transaction Hash | Method | Block |
From
|
|
To
|
||
|---|---|---|---|---|---|---|---|
| Transfer | 17111569 | 1057 days ago | 26.38252 ETH | ||||
| Buy | 17110373 | 1057 days ago | 0.0369 ETH | ||||
| Buy | 17110373 | 1057 days ago | 0.0369 ETH | ||||
| Buy | 17110373 | 1057 days ago | 0.0369 ETH | ||||
| Buy | 17110373 | 1057 days ago | 0.0369 ETH | ||||
| Buy | 17110373 | 1057 days ago | 0.0369 ETH | ||||
| Buy | 17110373 | 1057 days ago | 0.0369 ETH | ||||
| Buy | 17110373 | 1057 days ago | 0.0369 ETH | ||||
| Buy | 17110373 | 1057 days ago | 0.0369 ETH | ||||
| Buy | 17110373 | 1057 days ago | 0.0369 ETH | ||||
| Buy | 17110373 | 1057 days ago | 0.0369 ETH | ||||
| Buy | 17110373 | 1057 days ago | 0.0369 ETH | ||||
| Buy | 17110373 | 1057 days ago | 0.0369 ETH | ||||
| Buy | 17110373 | 1057 days ago | 0.0369 ETH | ||||
| Buy | 17110373 | 1057 days ago | 0.0369 ETH | ||||
| Buy | 17110373 | 1057 days ago | 0.0369 ETH | ||||
| Buy | 17110373 | 1057 days ago | 0.0369 ETH | ||||
| Buy | 17110373 | 1057 days ago | 0.0369 ETH | ||||
| Buy | 17110373 | 1057 days ago | 0.0369 ETH | ||||
| Buy | 17110373 | 1057 days ago | 0.0369 ETH | ||||
| Buy | 17110373 | 1057 days ago | 0.0369 ETH | ||||
| Buy | 17110371 | 1057 days ago | 0.0369 ETH | ||||
| Buy | 17110371 | 1057 days ago | 0.0369 ETH | ||||
| Buy | 17110371 | 1057 days ago | 0.0369 ETH | ||||
| Buy | 17110371 | 1057 days ago | 0.0369 ETH |
Loading...
Loading
Loading...
Loading
Cross-Chain Transactions
Loading...
Loading
Contract Name:
Pepe
Compiler Version
v0.8.18+commit.87f61d96
Optimization Enabled:
No with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// ERC721 contract for the Pepe project
// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.18;
import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721URIStorage.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/Strings.sol";
import "@openzeppelin/contracts/utils/math/SafeMath.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "erc721a/contracts/ERC721A.sol";
contract Pepe is ERC721A, Ownable {
using SafeMath for uint256;
using Strings for uint256;
uint256 public supplyLimit = 6969;
uint256 public mintPrice = 4200000000000000;
uint256 public whitelistMintPrice = 3690000000000000;
uint8 public maxMintPerTxn = 10;
uint8 public maxMintWhitelist = 5;
address payable public withdrawalWallet;
string private baseURI;
bool public saleActive = false;
bool public whitelistSaleActive = false;
mapping(address => uint8) public whitelist;
constructor(
address payable _withdrawalWallet,
string memory _name,
string memory _ticker,
string memory _baseURI
) ERC721A(_name, _ticker) {
withdrawalWallet = _withdrawalWallet;
baseURI = _baseURI;
}
// Given in WEI
function setMintPrice(uint256 _mintPrice) external onlyOwner {
mintPrice = _mintPrice;
}
function setWhitelistMintPrice(
uint256 _whitelistMintPrice
) external onlyOwner {
whitelistMintPrice = _whitelistMintPrice;
}
function setWhitelistStatus(
address _user,
uint8 _maxMint
) public onlyOwner {
whitelist[_user] = _maxMint;
}
function setWhithdrawalWallet(
address payable _withdrawalWallet
) external onlyOwner {
withdrawalWallet = _withdrawalWallet;
}
function isWhitelisted(address _user) public view returns (bool) {
return whitelist[_user] > 0;
}
function setSupplyLimit(uint256 _supplyLimit) external onlyOwner {
supplyLimit = _supplyLimit;
}
function addWhitelist(address[] memory _userList) external onlyOwner {
for (uint256 i = 0; i < _userList.length; i++) {
whitelist[_userList[i]] = maxMintWhitelist;
}
}
function toggleSaleActive() external onlyOwner {
saleActive = !saleActive;
}
function toggleWhitelistSaleActive() external onlyOwner {
whitelistSaleActive = !whitelistSaleActive;
}
function setBaseURI(string memory _baseURI) external onlyOwner {
baseURI = _baseURI;
}
function withdraw() external onlyOwner {
uint256 contractBalance = address(this).balance;
withdrawalWallet.transfer(contractBalance);
}
function buy(uint256 _amount) external payable {
require(saleActive, "Sale is not active.");
require(_amount <= maxMintPerTxn, "Max mint per Tx is 10.");
require(msg.value >= mintPrice.mul(_amount), "Insufficient payment.");
require(
totalSupply().add(_amount) <= supplyLimit,
"Not enough tokens left."
);
_safeMint(_msgSender(), _amount);
}
function whitelistBuy(uint8 _amount) external payable {
require(whitelistSaleActive, "Whitelist sale is not active.");
require(
msg.value >= whitelistMintPrice.mul(_amount),
"Insufficient payment."
);
require(
whitelist[_msgSender()] >= _amount,
"You are not whitelisted or have insufficient whitelist mint-spots left."
);
require(
totalSupply().add(_amount) <= supplyLimit,
"Not enough tokens left."
);
_safeMint(_msgSender(), _amount);
whitelist[_msgSender()] -= _amount;
}
function gift(
address[] calldata _recipients,
uint256[] calldata _amounts
) external onlyOwner {
require(
_recipients.length == _amounts.length,
"Recipient and amount array length mismatch."
);
// Check that we enough tokens left in aggregate
uint256 totalAmount = 0;
for (uint256 i = 0; i < _amounts.length; i++) {
totalAmount += _amounts[i];
}
require(
totalSupply().add(totalAmount) <= supplyLimit,
"Not enough tokens left."
);
for (uint256 i = 0; i < _recipients.length; i++) {
_safeMint(_recipients[i], _amounts[i]);
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)
pragma solidity ^0.8.0;
import "../utils/Context.sol";
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_transferOwnership(_msgSender());
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
_checkOwner();
_;
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if the sender is not the owner.
*/
function _checkOwner() internal view virtual {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_transferOwnership(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_transferOwnership(newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Internal function without access restriction.
*/
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `to`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address to, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `from` to `to` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 amount
) external returns (bool);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.2) (token/ERC721/ERC721.sol)
pragma solidity ^0.8.0;
import "./IERC721.sol";
import "./IERC721Receiver.sol";
import "./extensions/IERC721Metadata.sol";
import "../../utils/Address.sol";
import "../../utils/Context.sol";
import "../../utils/Strings.sol";
import "../../utils/introspection/ERC165.sol";
/**
* @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
* the Metadata extension, but not including the Enumerable extension, which is available separately as
* {ERC721Enumerable}.
*/
contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
using Address for address;
using Strings for uint256;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Mapping from token ID to owner address
mapping(uint256 => address) private _owners;
// Mapping owner address to token count
mapping(address => uint256) private _balances;
// 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;
/**
* @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return
interfaceId == type(IERC721).interfaceId ||
interfaceId == type(IERC721Metadata).interfaceId ||
super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view virtual override returns (uint256) {
require(owner != address(0), "ERC721: address zero is not a valid owner");
return _balances[owner];
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
address owner = _ownerOf(tokenId);
require(owner != address(0), "ERC721: invalid token ID");
return owner;
}
/**
* @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) {
_requireMinted(tokenId);
string memory baseURI = _baseURI();
return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
}
/**
* @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
* token will be the concatenation of the `baseURI` and the `tokenId`. Empty
* by default, can be overridden in child contracts.
*/
function _baseURI() internal view virtual returns (string memory) {
return "";
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public virtual override {
address owner = ERC721.ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not token owner or approved for all"
);
_approve(to, tokenId);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view virtual override returns (address) {
_requireMinted(tokenId);
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
_setApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: caller is not token owner or approved");
_transfer(from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
safeTransferFrom(from, to, tokenId, "");
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes memory data
) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: caller is not token owner or approved");
_safeTransfer(from, to, tokenId, data);
}
/**
* @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.
*
* `data` is additional data, it has no specified format and it is sent in call to `to`.
*
* This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.
* implement alternative mechanisms to perform token transfer, such as signature-based.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeTransfer(
address from,
address to,
uint256 tokenId,
bytes memory data
) internal virtual {
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, data), "ERC721: transfer to non ERC721Receiver implementer");
}
/**
* @dev Returns the owner of the `tokenId`. Does NOT revert if token doesn't exist
*/
function _ownerOf(uint256 tokenId) internal view virtual returns (address) {
return _owners[tokenId];
}
/**
* @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`),
* and stop existing when they are burned (`_burn`).
*/
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return _ownerOf(tokenId) != address(0);
}
/**
* @dev Returns whether `spender` is allowed to manage `tokenId`.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
address owner = ERC721.ownerOf(tokenId);
return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender);
}
/**
* @dev Safely mints `tokenId` and transfers it to `to`.
*
* Requirements:
*
* - `tokenId` must not exist.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
/**
* @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
* forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
*/
function _safeMint(
address to,
uint256 tokenId,
bytes memory data
) internal virtual {
_mint(to, tokenId);
require(
_checkOnERC721Received(address(0), to, tokenId, data),
"ERC721: transfer to non ERC721Receiver implementer"
);
}
/**
* @dev Mints `tokenId` and transfers it to `to`.
*
* WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
*
* Requirements:
*
* - `tokenId` must not exist.
* - `to` cannot be the zero address.
*
* Emits a {Transfer} event.
*/
function _mint(address to, uint256 tokenId) internal virtual {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenId, 1);
// Check that tokenId was not minted by `_beforeTokenTransfer` hook
require(!_exists(tokenId), "ERC721: token already minted");
unchecked {
// Will not overflow unless all 2**256 token ids are minted to the same owner.
// Given that tokens are minted one by one, it is impossible in practice that
// this ever happens. Might change if we allow batch minting.
// The ERC fails to describe this case.
_balances[to] += 1;
}
_owners[tokenId] = to;
emit Transfer(address(0), to, tokenId);
_afterTokenTransfer(address(0), to, tokenId, 1);
}
/**
* @dev Destroys `tokenId`.
* The approval is cleared when the token is burned.
* This is an internal function that does not check if the sender is authorized to operate on the token.
*
* Requirements:
*
* - `tokenId` must exist.
*
* Emits a {Transfer} event.
*/
function _burn(uint256 tokenId) internal virtual {
address owner = ERC721.ownerOf(tokenId);
_beforeTokenTransfer(owner, address(0), tokenId, 1);
// Update ownership in case tokenId was transferred by `_beforeTokenTransfer` hook
owner = ERC721.ownerOf(tokenId);
// Clear approvals
delete _tokenApprovals[tokenId];
unchecked {
// Cannot overflow, as that would require more tokens to be burned/transferred
// out than the owner initially received through minting and transferring in.
_balances[owner] -= 1;
}
delete _owners[tokenId];
emit Transfer(owner, address(0), tokenId);
_afterTokenTransfer(owner, address(0), tokenId, 1);
}
/**
* @dev Transfers `tokenId` from `from` to `to`.
* As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
*
* Emits a {Transfer} event.
*/
function _transfer(
address from,
address to,
uint256 tokenId
) internal virtual {
require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner");
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId, 1);
// Check that tokenId was not transferred by `_beforeTokenTransfer` hook
require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner");
// Clear approvals from the previous owner
delete _tokenApprovals[tokenId];
unchecked {
// `_balances[from]` cannot overflow for the same reason as described in `_burn`:
// `from`'s balance is the number of token held, which is at least one before the current
// transfer.
// `_balances[to]` could overflow in the conditions described in `_mint`. That would require
// all 2**256 token ids to be minted, which in practice is impossible.
_balances[from] -= 1;
_balances[to] += 1;
}
_owners[tokenId] = to;
emit Transfer(from, to, tokenId);
_afterTokenTransfer(from, to, tokenId, 1);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits an {Approval} event.
*/
function _approve(address to, uint256 tokenId) internal virtual {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
}
/**
* @dev Approve `operator` to operate on all of `owner` tokens
*
* Emits an {ApprovalForAll} event.
*/
function _setApprovalForAll(
address owner,
address operator,
bool approved
) internal virtual {
require(owner != operator, "ERC721: approve to caller");
_operatorApprovals[owner][operator] = approved;
emit ApprovalForAll(owner, operator, approved);
}
/**
* @dev Reverts if the `tokenId` has not been minted yet.
*/
function _requireMinted(uint256 tokenId) internal view virtual {
require(_exists(tokenId), "ERC721: invalid token ID");
}
/**
* @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
* The call is not executed if the target address is not a 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 _checkOnERC721Received(
address from,
address to,
uint256 tokenId,
bytes memory data
) private returns (bool) {
if (to.isContract()) {
try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) {
return retval == IERC721Receiver.onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert("ERC721: transfer to non ERC721Receiver implementer");
} else {
/// @solidity memory-safe-assembly
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
/**
* @dev Hook that is called before any token transfer. This includes minting and burning. If {ERC721Consecutive} is
* used, the hook may be called as part of a consecutive (batch) mint, as indicated by `batchSize` greater than 1.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s tokens will be transferred to `to`.
* - When `from` is zero, the tokens will be minted for `to`.
* - When `to` is zero, ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
* - `batchSize` is non-zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 firstTokenId,
uint256 batchSize
) internal virtual {}
/**
* @dev Hook that is called after any token transfer. This includes minting and burning. If {ERC721Consecutive} is
* used, the hook may be called as part of a consecutive (batch) mint, as indicated by `batchSize` greater than 1.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s tokens were transferred to `to`.
* - When `from` is zero, the tokens were minted for `to`.
* - When `to` is zero, ``from``'s tokens were burned.
* - `from` and `to` are never both zero.
* - `batchSize` is non-zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _afterTokenTransfer(
address from,
address to,
uint256 firstTokenId,
uint256 batchSize
) internal virtual {}
/**
* @dev Unsafe write access to the balances, used by extensions that "mint" tokens using an {ownerOf} override.
*
* WARNING: Anyone calling this MUST ensure that the balances remain consistent with the ownership. The invariant
* being that for any address `a` the value returned by `balanceOf(a)` must be equal to the number of tokens such
* that `ownerOf(tokenId)` is `a`.
*/
// solhint-disable-next-line func-name-mixedcase
function __unsafe_increaseBalance(address account, uint256 amount) internal {
_balances[account] += amount;
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC721/extensions/ERC721Enumerable.sol)
pragma solidity ^0.8.0;
import "../ERC721.sol";
import "./IERC721Enumerable.sol";
/**
* @dev This implements an optional extension of {ERC721} defined in the EIP that adds
* enumerability of all the token ids in the contract as well as all token ids owned by each
* account.
*/
abstract contract ERC721Enumerable is ERC721, IERC721Enumerable {
// Mapping from owner to list of owned token IDs
mapping(address => mapping(uint256 => uint256)) private _ownedTokens;
// Mapping from token ID to index of the owner tokens list
mapping(uint256 => uint256) private _ownedTokensIndex;
// Array with all token ids, used for enumeration
uint256[] private _allTokens;
// Mapping from token id to position in the allTokens array
mapping(uint256 => uint256) private _allTokensIndex;
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {
return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) {
require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds");
return _ownedTokens[owner][index];
}
/**
* @dev See {IERC721Enumerable-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _allTokens.length;
}
/**
* @dev See {IERC721Enumerable-tokenByIndex}.
*/
function tokenByIndex(uint256 index) public view virtual override returns (uint256) {
require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds");
return _allTokens[index];
}
/**
* @dev See {ERC721-_beforeTokenTransfer}.
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 firstTokenId,
uint256 batchSize
) internal virtual override {
super._beforeTokenTransfer(from, to, firstTokenId, batchSize);
if (batchSize > 1) {
// Will only trigger during construction. Batch transferring (minting) is not available afterwards.
revert("ERC721Enumerable: consecutive transfers not supported");
}
uint256 tokenId = firstTokenId;
if (from == address(0)) {
_addTokenToAllTokensEnumeration(tokenId);
} else if (from != to) {
_removeTokenFromOwnerEnumeration(from, tokenId);
}
if (to == address(0)) {
_removeTokenFromAllTokensEnumeration(tokenId);
} else if (to != from) {
_addTokenToOwnerEnumeration(to, tokenId);
}
}
/**
* @dev Private function to add a token to this extension's ownership-tracking data structures.
* @param to address representing the new owner of the given token ID
* @param tokenId uint256 ID of the token to be added to the tokens list of the given address
*/
function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private {
uint256 length = ERC721.balanceOf(to);
_ownedTokens[to][length] = tokenId;
_ownedTokensIndex[tokenId] = length;
}
/**
* @dev Private function to add a token to this extension's token tracking data structures.
* @param tokenId uint256 ID of the token to be added to the tokens list
*/
function _addTokenToAllTokensEnumeration(uint256 tokenId) private {
_allTokensIndex[tokenId] = _allTokens.length;
_allTokens.push(tokenId);
}
/**
* @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that
* while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for
* gas optimizations e.g. when performing a transfer operation (avoiding double writes).
* This has O(1) time complexity, but alters the order of the _ownedTokens array.
* @param from address representing the previous owner of the given token ID
* @param tokenId uint256 ID of the token to be removed from the tokens list of the given address
*/
function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private {
// To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and
// then delete the last slot (swap and pop).
uint256 lastTokenIndex = ERC721.balanceOf(from) - 1;
uint256 tokenIndex = _ownedTokensIndex[tokenId];
// When the token to delete is the last token, the swap operation is unnecessary
if (tokenIndex != lastTokenIndex) {
uint256 lastTokenId = _ownedTokens[from][lastTokenIndex];
_ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
_ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
}
// This also deletes the contents at the last position of the array
delete _ownedTokensIndex[tokenId];
delete _ownedTokens[from][lastTokenIndex];
}
/**
* @dev Private function to remove a token from this extension's token tracking data structures.
* This has O(1) time complexity, but alters the order of the _allTokens array.
* @param tokenId uint256 ID of the token to be removed from the tokens list
*/
function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private {
// To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and
// then delete the last slot (swap and pop).
uint256 lastTokenIndex = _allTokens.length - 1;
uint256 tokenIndex = _allTokensIndex[tokenId];
// When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so
// rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding
// an 'if' statement (like in _removeTokenFromOwnerEnumeration)
uint256 lastTokenId = _allTokens[lastTokenIndex];
_allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
_allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
// This also deletes the contents at the last position of the array
delete _allTokensIndex[tokenId];
_allTokens.pop();
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/extensions/ERC721URIStorage.sol)
pragma solidity ^0.8.0;
import "../ERC721.sol";
/**
* @dev ERC721 token with storage based token URI management.
*/
abstract contract ERC721URIStorage is ERC721 {
using Strings for uint256;
// Optional mapping for token URIs
mapping(uint256 => string) private _tokenURIs;
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
_requireMinted(tokenId);
string memory _tokenURI = _tokenURIs[tokenId];
string memory base = _baseURI();
// If there is no base URI, return the token URI.
if (bytes(base).length == 0) {
return _tokenURI;
}
// If both are set, concatenate the baseURI and tokenURI (via abi.encodePacked).
if (bytes(_tokenURI).length > 0) {
return string(abi.encodePacked(base, _tokenURI));
}
return super.tokenURI(tokenId);
}
/**
* @dev Sets `_tokenURI` as the tokenURI of `tokenId`.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function _setTokenURI(uint256 tokenId, string memory _tokenURI) internal virtual {
require(_exists(tokenId), "ERC721URIStorage: URI set of nonexistent token");
_tokenURIs[tokenId] = _tokenURI;
}
/**
* @dev See {ERC721-_burn}. This override additionally checks to see if a
* token-specific URI was set for the token, and if so, it deletes the token URI from
* the storage mapping.
*/
function _burn(uint256 tokenId) internal virtual override {
super._burn(tokenId);
if (bytes(_tokenURIs[tokenId]).length != 0) {
delete _tokenURIs[tokenId];
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC721/extensions/IERC721Enumerable.sol)
pragma solidity ^0.8.0;
import "../IERC721.sol";
/**
* @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721Enumerable is IERC721 {
/**
* @dev Returns the total amount of tokens stored by the contract.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns a token ID owned by `owner` at a given `index` of its token list.
* Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256);
/**
* @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
* Use along with {totalSupply} to enumerate all tokens.
*/
function tokenByIndex(uint256 index) external view returns (uint256);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)
pragma solidity ^0.8.0;
import "../IERC721.sol";
/**
* @title ERC-721 Non-Fungible Token Standard, optional metadata extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721Metadata is IERC721 {
/**
* @dev Returns the token collection name.
*/
function name() external view returns (string memory);
/**
* @dev Returns the token collection symbol.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
*/
function tokenURI(uint256 tokenId) external view returns (string memory);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC721/IERC721.sol)
pragma solidity ^0.8.0;
import "../../utils/introspection/IERC165.sol";
/**
* @dev Required interface of an ERC721 compliant contract.
*/
interface IERC721 is IERC165 {
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
*/
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/**
* @dev Returns the number of tokens in ``owner``'s account.
*/
function balanceOf(address owner) external view returns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) external view returns (address owner);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes calldata data
) external;
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Transfers `tokenId` token from `from` to `to`.
*
* WARNING: Note that the caller is responsible to confirm that the recipient is capable of receiving ERC721
* or else they may be permanently lost. Usage of {safeTransferFrom} prevents loss, though the caller must
* understand this adds an external call which potentially creates a reentrancy vulnerability.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/
function approve(address to, uint256 tokenId) external;
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool _approved) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)
pragma solidity ^0.8.0;
/**
* @title ERC721 token receiver interface
* @dev Interface for any contract that wants to support safeTransfers
* from ERC721 asset contracts.
*/
interface IERC721Receiver {
/**
* @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
* by `operator` from `from`, this function is called.
*
* It must return its Solidity selector to confirm the token transfer.
* If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
*
* The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.
*/
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (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 functionCallWithValue(target, data, 0, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResultFromTarget(target, success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResultFromTarget(target, success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResultFromTarget(target, success, returndata, errorMessage);
}
/**
* @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
* the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
*
* _Available since v4.8._
*/
function verifyCallResultFromTarget(
address target,
bool success,
bytes memory returndata,
string memory errorMessage
) internal view returns (bytes memory) {
if (success) {
if (returndata.length == 0) {
// only check isContract if the call was successful and the return data is empty
// otherwise we already know that it was a contract
require(isContract(target), "Address: call to non-contract");
}
return returndata;
} else {
_revert(returndata, errorMessage);
}
}
/**
* @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason or using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
_revert(returndata, errorMessage);
}
}
function _revert(bytes memory returndata, string memory errorMessage) private pure {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
/// @solidity memory-safe-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts 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 v4.4.1 (utils/introspection/ERC165.sol)
pragma solidity ^0.8.0;
import "./IERC165.sol";
/**
* @dev Implementation of the {IERC165} interface.
*
* Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
* for the additional interface id that will be supported. For example:
*
* ```solidity
* function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
* return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
* }
* ```
*
* Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
*/
abstract contract ERC165 is IERC165 {
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return interfaceId == type(IERC165).interfaceId;
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC165 standard, as defined in the
* https://eips.ethereum.org/EIPS/eip-165[EIP].
*
* Implementers can declare support of contract interfaces, which can then be
* queried by others ({ERC165Checker}).
*
* For an implementation, see {ERC165}.
*/
interface IERC165 {
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
* to learn more about how these ids are created.
*
* This function call must use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/math/Math.sol)
pragma solidity ^0.8.0;
/**
* @dev Standard math utilities missing in the Solidity language.
*/
library Math {
enum Rounding {
Down, // Toward negative infinity
Up, // Toward infinity
Zero // Toward zero
}
/**
* @dev Returns the largest of two numbers.
*/
function max(uint256 a, uint256 b) internal pure returns (uint256) {
return a > b ? a : b;
}
/**
* @dev Returns the smallest of two numbers.
*/
function min(uint256 a, uint256 b) internal pure returns (uint256) {
return a < b ? a : b;
}
/**
* @dev Returns the average of two numbers. The result is rounded towards
* zero.
*/
function average(uint256 a, uint256 b) internal pure returns (uint256) {
// (a + b) / 2 can overflow.
return (a & b) + (a ^ b) / 2;
}
/**
* @dev Returns the ceiling of the division of two numbers.
*
* This differs from standard division with `/` in that it rounds up instead
* of rounding down.
*/
function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
// (a + b - 1) / b can overflow on addition, so we distribute.
return a == 0 ? 0 : (a - 1) / b + 1;
}
/**
* @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0
* @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv)
* with further edits by Uniswap Labs also under MIT license.
*/
function mulDiv(
uint256 x,
uint256 y,
uint256 denominator
) internal pure returns (uint256 result) {
unchecked {
// 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
// use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
// variables such that product = prod1 * 2^256 + prod0.
uint256 prod0; // Least significant 256 bits of the product
uint256 prod1; // Most significant 256 bits of the product
assembly {
let mm := mulmod(x, y, not(0))
prod0 := mul(x, y)
prod1 := sub(sub(mm, prod0), lt(mm, prod0))
}
// Handle non-overflow cases, 256 by 256 division.
if (prod1 == 0) {
return prod0 / denominator;
}
// Make sure the result is less than 2^256. Also prevents denominator == 0.
require(denominator > prod1);
///////////////////////////////////////////////
// 512 by 256 division.
///////////////////////////////////////////////
// Make division exact by subtracting the remainder from [prod1 prod0].
uint256 remainder;
assembly {
// Compute remainder using mulmod.
remainder := mulmod(x, y, denominator)
// Subtract 256 bit number from 512 bit number.
prod1 := sub(prod1, gt(remainder, prod0))
prod0 := sub(prod0, remainder)
}
// Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1.
// See https://cs.stackexchange.com/q/138556/92363.
// Does not overflow because the denominator cannot be zero at this stage in the function.
uint256 twos = denominator & (~denominator + 1);
assembly {
// Divide denominator by twos.
denominator := div(denominator, twos)
// Divide [prod1 prod0] by twos.
prod0 := div(prod0, twos)
// Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.
twos := add(div(sub(0, twos), twos), 1)
}
// Shift in bits from prod1 into prod0.
prod0 |= prod1 * twos;
// Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
// that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
// four bits. That is, denominator * inv = 1 mod 2^4.
uint256 inverse = (3 * denominator) ^ 2;
// Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works
// in modular arithmetic, doubling the correct bits in each step.
inverse *= 2 - denominator * inverse; // inverse mod 2^8
inverse *= 2 - denominator * inverse; // inverse mod 2^16
inverse *= 2 - denominator * inverse; // inverse mod 2^32
inverse *= 2 - denominator * inverse; // inverse mod 2^64
inverse *= 2 - denominator * inverse; // inverse mod 2^128
inverse *= 2 - denominator * inverse; // inverse mod 2^256
// Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
// This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
// less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
// is no longer required.
result = prod0 * inverse;
return result;
}
}
/**
* @notice Calculates x * y / denominator with full precision, following the selected rounding direction.
*/
function mulDiv(
uint256 x,
uint256 y,
uint256 denominator,
Rounding rounding
) internal pure returns (uint256) {
uint256 result = mulDiv(x, y, denominator);
if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) {
result += 1;
}
return result;
}
/**
* @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down.
*
* Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11).
*/
function sqrt(uint256 a) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
// For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.
//
// We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have
// `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.
//
// This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`
// → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`
// → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`
//
// Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.
uint256 result = 1 << (log2(a) >> 1);
// At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,
// since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at
// every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision
// into the expected uint128 result.
unchecked {
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
return min(result, a / result);
}
}
/**
* @notice Calculates sqrt(a), following the selected rounding direction.
*/
function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = sqrt(a);
return result + (rounding == Rounding.Up && result * result < a ? 1 : 0);
}
}
/**
* @dev Return the log in base 2, rounded down, of a positive value.
* Returns 0 if given 0.
*/
function log2(uint256 value) internal pure returns (uint256) {
uint256 result = 0;
unchecked {
if (value >> 128 > 0) {
value >>= 128;
result += 128;
}
if (value >> 64 > 0) {
value >>= 64;
result += 64;
}
if (value >> 32 > 0) {
value >>= 32;
result += 32;
}
if (value >> 16 > 0) {
value >>= 16;
result += 16;
}
if (value >> 8 > 0) {
value >>= 8;
result += 8;
}
if (value >> 4 > 0) {
value >>= 4;
result += 4;
}
if (value >> 2 > 0) {
value >>= 2;
result += 2;
}
if (value >> 1 > 0) {
result += 1;
}
}
return result;
}
/**
* @dev Return the log in base 2, following the selected rounding direction, of a positive value.
* Returns 0 if given 0.
*/
function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = log2(value);
return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0);
}
}
/**
* @dev Return the log in base 10, rounded down, of a positive value.
* Returns 0 if given 0.
*/
function log10(uint256 value) internal pure returns (uint256) {
uint256 result = 0;
unchecked {
if (value >= 10**64) {
value /= 10**64;
result += 64;
}
if (value >= 10**32) {
value /= 10**32;
result += 32;
}
if (value >= 10**16) {
value /= 10**16;
result += 16;
}
if (value >= 10**8) {
value /= 10**8;
result += 8;
}
if (value >= 10**4) {
value /= 10**4;
result += 4;
}
if (value >= 10**2) {
value /= 10**2;
result += 2;
}
if (value >= 10**1) {
result += 1;
}
}
return result;
}
/**
* @dev Return the log in base 10, following the selected rounding direction, of a positive value.
* Returns 0 if given 0.
*/
function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = log10(value);
return result + (rounding == Rounding.Up && 10**result < value ? 1 : 0);
}
}
/**
* @dev Return the log in base 256, rounded down, of a positive value.
* Returns 0 if given 0.
*
* Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
*/
function log256(uint256 value) internal pure returns (uint256) {
uint256 result = 0;
unchecked {
if (value >> 128 > 0) {
value >>= 128;
result += 16;
}
if (value >> 64 > 0) {
value >>= 64;
result += 8;
}
if (value >> 32 > 0) {
value >>= 32;
result += 4;
}
if (value >> 16 > 0) {
value >>= 16;
result += 2;
}
if (value >> 8 > 0) {
result += 1;
}
}
return result;
}
/**
* @dev Return the log in base 10, following the selected rounding direction, of a positive value.
* Returns 0 if given 0.
*/
function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = log256(value);
return result + (rounding == Rounding.Up && 1 << (result * 8) < value ? 1 : 0);
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (utils/math/SafeMath.sol)
pragma solidity ^0.8.0;
// CAUTION
// This version of SafeMath should only be used with Solidity 0.8 or later,
// because it relies on the compiler's built in overflow checks.
/**
* @dev Wrappers over Solidity's arithmetic operations.
*
* NOTE: `SafeMath` is generally not needed starting with Solidity 0.8, since the compiler
* now has built in overflow checking.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
uint256 c = a + b;
if (c < a) return (false, 0);
return (true, c);
}
}
/**
* @dev Returns the subtraction of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b > a) return (false, 0);
return (true, a - b);
}
}
/**
* @dev Returns the multiplication of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) return (true, 0);
uint256 c = a * b;
if (c / a != b) return (false, 0);
return (true, c);
}
}
/**
* @dev Returns the division of two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a / b);
}
}
/**
* @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a % b);
}
}
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
return a + b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return a - b;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
return a * b;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator.
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return a % b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {trySub}.
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b <= a, errorMessage);
return a - b;
}
}
/**
* @dev Returns the integer division of two unsigned integers, reverting with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b > 0, errorMessage);
return a / b;
}
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting with custom message when dividing by zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryMod}.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b > 0, errorMessage);
return a % b;
}
}
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/Strings.sol)
pragma solidity ^0.8.0;
import "./math/Math.sol";
/**
* @dev String operations.
*/
library Strings {
bytes16 private constant _SYMBOLS = "0123456789abcdef";
uint8 private constant _ADDRESS_LENGTH = 20;
/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/
function toString(uint256 value) internal pure returns (string memory) {
unchecked {
uint256 length = Math.log10(value) + 1;
string memory buffer = new string(length);
uint256 ptr;
/// @solidity memory-safe-assembly
assembly {
ptr := add(buffer, add(32, length))
}
while (true) {
ptr--;
/// @solidity memory-safe-assembly
assembly {
mstore8(ptr, byte(mod(value, 10), _SYMBOLS))
}
value /= 10;
if (value == 0) break;
}
return buffer;
}
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/
function toHexString(uint256 value) internal pure returns (string memory) {
unchecked {
return toHexString(value, Math.log256(value) + 1);
}
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
*/
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = _SYMBOLS[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
/**
* @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.
*/
function toHexString(address addr) internal pure returns (string memory) {
return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);
}
}// SPDX-License-Identifier: MIT
// ERC721A Contracts v4.2.3
// Creator: Chiru Labs
pragma solidity ^0.8.4;
import './IERC721A.sol';
/**
* @dev Interface of ERC721 token receiver.
*/
interface ERC721A__IERC721Receiver {
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}
/**
* @title ERC721A
*
* @dev Implementation of the [ERC721](https://eips.ethereum.org/EIPS/eip-721)
* Non-Fungible Token Standard, including the Metadata extension.
* Optimized for lower gas during batch mints.
*
* Token IDs are minted in sequential order (e.g. 0, 1, 2, 3, ...)
* starting from `_startTokenId()`.
*
* Assumptions:
*
* - An owner cannot have more than 2**64 - 1 (max value of uint64) of supply.
* - The maximum token ID cannot exceed 2**256 - 1 (max value of uint256).
*/
contract ERC721A is IERC721A {
// Bypass for a `--via-ir` bug (https://github.com/chiru-labs/ERC721A/pull/364).
struct TokenApprovalRef {
address value;
}
// =============================================================
// CONSTANTS
// =============================================================
// Mask of an entry in packed address data.
uint256 private constant _BITMASK_ADDRESS_DATA_ENTRY = (1 << 64) - 1;
// The bit position of `numberMinted` in packed address data.
uint256 private constant _BITPOS_NUMBER_MINTED = 64;
// The bit position of `numberBurned` in packed address data.
uint256 private constant _BITPOS_NUMBER_BURNED = 128;
// The bit position of `aux` in packed address data.
uint256 private constant _BITPOS_AUX = 192;
// Mask of all 256 bits in packed address data except the 64 bits for `aux`.
uint256 private constant _BITMASK_AUX_COMPLEMENT = (1 << 192) - 1;
// The bit position of `startTimestamp` in packed ownership.
uint256 private constant _BITPOS_START_TIMESTAMP = 160;
// The bit mask of the `burned` bit in packed ownership.
uint256 private constant _BITMASK_BURNED = 1 << 224;
// The bit position of the `nextInitialized` bit in packed ownership.
uint256 private constant _BITPOS_NEXT_INITIALIZED = 225;
// The bit mask of the `nextInitialized` bit in packed ownership.
uint256 private constant _BITMASK_NEXT_INITIALIZED = 1 << 225;
// The bit position of `extraData` in packed ownership.
uint256 private constant _BITPOS_EXTRA_DATA = 232;
// Mask of all 256 bits in a packed ownership except the 24 bits for `extraData`.
uint256 private constant _BITMASK_EXTRA_DATA_COMPLEMENT = (1 << 232) - 1;
// The mask of the lower 160 bits for addresses.
uint256 private constant _BITMASK_ADDRESS = (1 << 160) - 1;
// The maximum `quantity` that can be minted with {_mintERC2309}.
// This limit is to prevent overflows on the address data entries.
// For a limit of 5000, a total of 3.689e15 calls to {_mintERC2309}
// is required to cause an overflow, which is unrealistic.
uint256 private constant _MAX_MINT_ERC2309_QUANTITY_LIMIT = 5000;
// The `Transfer` event signature is given by:
// `keccak256(bytes("Transfer(address,address,uint256)"))`.
bytes32 private constant _TRANSFER_EVENT_SIGNATURE =
0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef;
// =============================================================
// STORAGE
// =============================================================
// The next token ID to be minted.
uint256 private _currentIndex;
// The number of tokens burned.
uint256 private _burnCounter;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Mapping from token ID to ownership details
// An empty struct value does not necessarily mean the token is unowned.
// See {_packedOwnershipOf} implementation for details.
//
// Bits Layout:
// - [0..159] `addr`
// - [160..223] `startTimestamp`
// - [224] `burned`
// - [225] `nextInitialized`
// - [232..255] `extraData`
mapping(uint256 => uint256) private _packedOwnerships;
// Mapping owner address to address data.
//
// Bits Layout:
// - [0..63] `balance`
// - [64..127] `numberMinted`
// - [128..191] `numberBurned`
// - [192..255] `aux`
mapping(address => uint256) private _packedAddressData;
// Mapping from token ID to approved address.
mapping(uint256 => TokenApprovalRef) private _tokenApprovals;
// Mapping from owner to operator approvals
mapping(address => mapping(address => bool)) private _operatorApprovals;
// =============================================================
// CONSTRUCTOR
// =============================================================
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
_currentIndex = _startTokenId();
}
// =============================================================
// TOKEN COUNTING OPERATIONS
// =============================================================
/**
* @dev Returns the starting token ID.
* To change the starting token ID, please override this function.
*/
function _startTokenId() internal view virtual returns (uint256) {
return 0;
}
/**
* @dev Returns the next token ID to be minted.
*/
function _nextTokenId() internal view virtual returns (uint256) {
return _currentIndex;
}
/**
* @dev Returns the total number of tokens in existence.
* Burned tokens will reduce the count.
* To get the total number of tokens minted, please see {_totalMinted}.
*/
function totalSupply() public view virtual override returns (uint256) {
// Counter underflow is impossible as _burnCounter cannot be incremented
// more than `_currentIndex - _startTokenId()` times.
unchecked {
return _currentIndex - _burnCounter - _startTokenId();
}
}
/**
* @dev Returns the total amount of tokens minted in the contract.
*/
function _totalMinted() internal view virtual returns (uint256) {
// Counter underflow is impossible as `_currentIndex` does not decrement,
// and it is initialized to `_startTokenId()`.
unchecked {
return _currentIndex - _startTokenId();
}
}
/**
* @dev Returns the total number of tokens burned.
*/
function _totalBurned() internal view virtual returns (uint256) {
return _burnCounter;
}
// =============================================================
// ADDRESS DATA OPERATIONS
// =============================================================
/**
* @dev Returns the number of tokens in `owner`'s account.
*/
function balanceOf(address owner) public view virtual override returns (uint256) {
if (owner == address(0)) revert BalanceQueryForZeroAddress();
return _packedAddressData[owner] & _BITMASK_ADDRESS_DATA_ENTRY;
}
/**
* Returns the number of tokens minted by `owner`.
*/
function _numberMinted(address owner) internal view returns (uint256) {
return (_packedAddressData[owner] >> _BITPOS_NUMBER_MINTED) & _BITMASK_ADDRESS_DATA_ENTRY;
}
/**
* Returns the number of tokens burned by or on behalf of `owner`.
*/
function _numberBurned(address owner) internal view returns (uint256) {
return (_packedAddressData[owner] >> _BITPOS_NUMBER_BURNED) & _BITMASK_ADDRESS_DATA_ENTRY;
}
/**
* Returns the auxiliary data for `owner`. (e.g. number of whitelist mint slots used).
*/
function _getAux(address owner) internal view returns (uint64) {
return uint64(_packedAddressData[owner] >> _BITPOS_AUX);
}
/**
* Sets the auxiliary data for `owner`. (e.g. number of whitelist mint slots used).
* If there are multiple variables, please pack them into a uint64.
*/
function _setAux(address owner, uint64 aux) internal virtual {
uint256 packed = _packedAddressData[owner];
uint256 auxCasted;
// Cast `aux` with assembly to avoid redundant masking.
assembly {
auxCasted := aux
}
packed = (packed & _BITMASK_AUX_COMPLEMENT) | (auxCasted << _BITPOS_AUX);
_packedAddressData[owner] = packed;
}
// =============================================================
// IERC165
// =============================================================
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* [EIP section](https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified)
* to learn more about how these ids are created.
*
* This function call must use less than 30000 gas.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
// The interface IDs are constants representing the first 4 bytes
// of the XOR of all function selectors in the interface.
// See: [ERC165](https://eips.ethereum.org/EIPS/eip-165)
// (e.g. `bytes4(i.functionA.selector ^ i.functionB.selector ^ ...)`)
return
interfaceId == 0x01ffc9a7 || // ERC165 interface ID for ERC165.
interfaceId == 0x80ac58cd || // ERC165 interface ID for ERC721.
interfaceId == 0x5b5e139f; // ERC165 interface ID for ERC721Metadata.
}
// =============================================================
// IERC721Metadata
// =============================================================
/**
* @dev Returns the token collection name.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev Returns the token collection symbol.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
if (!_exists(tokenId)) revert URIQueryForNonexistentToken();
string memory baseURI = _baseURI();
return bytes(baseURI).length != 0 ? string(abi.encodePacked(baseURI, _toString(tokenId))) : '';
}
/**
* @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
* token will be the concatenation of the `baseURI` and the `tokenId`. Empty
* by default, it can be overridden in child contracts.
*/
function _baseURI() internal view virtual returns (string memory) {
return '';
}
// =============================================================
// OWNERSHIPS OPERATIONS
// =============================================================
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
return address(uint160(_packedOwnershipOf(tokenId)));
}
/**
* @dev Gas spent here starts off proportional to the maximum mint batch size.
* It gradually moves to O(1) as tokens get transferred around over time.
*/
function _ownershipOf(uint256 tokenId) internal view virtual returns (TokenOwnership memory) {
return _unpackedOwnership(_packedOwnershipOf(tokenId));
}
/**
* @dev Returns the unpacked `TokenOwnership` struct at `index`.
*/
function _ownershipAt(uint256 index) internal view virtual returns (TokenOwnership memory) {
return _unpackedOwnership(_packedOwnerships[index]);
}
/**
* @dev Initializes the ownership slot minted at `index` for efficiency purposes.
*/
function _initializeOwnershipAt(uint256 index) internal virtual {
if (_packedOwnerships[index] == 0) {
_packedOwnerships[index] = _packedOwnershipOf(index);
}
}
/**
* Returns the packed ownership data of `tokenId`.
*/
function _packedOwnershipOf(uint256 tokenId) private view returns (uint256) {
uint256 curr = tokenId;
unchecked {
if (_startTokenId() <= curr)
if (curr < _currentIndex) {
uint256 packed = _packedOwnerships[curr];
// If not burned.
if (packed & _BITMASK_BURNED == 0) {
// Invariant:
// There will always be an initialized ownership slot
// (i.e. `ownership.addr != address(0) && ownership.burned == false`)
// before an unintialized ownership slot
// (i.e. `ownership.addr == address(0) && ownership.burned == false`)
// Hence, `curr` will not underflow.
//
// We can directly compare the packed value.
// If the address is zero, packed will be zero.
while (packed == 0) {
packed = _packedOwnerships[--curr];
}
return packed;
}
}
}
revert OwnerQueryForNonexistentToken();
}
/**
* @dev Returns the unpacked `TokenOwnership` struct from `packed`.
*/
function _unpackedOwnership(uint256 packed) private pure returns (TokenOwnership memory ownership) {
ownership.addr = address(uint160(packed));
ownership.startTimestamp = uint64(packed >> _BITPOS_START_TIMESTAMP);
ownership.burned = packed & _BITMASK_BURNED != 0;
ownership.extraData = uint24(packed >> _BITPOS_EXTRA_DATA);
}
/**
* @dev Packs ownership data into a single uint256.
*/
function _packOwnershipData(address owner, uint256 flags) private view returns (uint256 result) {
assembly {
// Mask `owner` to the lower 160 bits, in case the upper bits somehow aren't clean.
owner := and(owner, _BITMASK_ADDRESS)
// `owner | (block.timestamp << _BITPOS_START_TIMESTAMP) | flags`.
result := or(owner, or(shl(_BITPOS_START_TIMESTAMP, timestamp()), flags))
}
}
/**
* @dev Returns the `nextInitialized` flag set if `quantity` equals 1.
*/
function _nextInitializedFlag(uint256 quantity) private pure returns (uint256 result) {
// For branchless setting of the `nextInitialized` flag.
assembly {
// `(quantity == 1) << _BITPOS_NEXT_INITIALIZED`.
result := shl(_BITPOS_NEXT_INITIALIZED, eq(quantity, 1))
}
}
// =============================================================
// APPROVAL OPERATIONS
// =============================================================
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the
* zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/
function approve(address to, uint256 tokenId) public payable virtual override {
address owner = ownerOf(tokenId);
if (_msgSenderERC721A() != owner)
if (!isApprovedForAll(owner, _msgSenderERC721A())) {
revert ApprovalCallerNotOwnerNorApproved();
}
_tokenApprovals[tokenId].value = to;
emit Approval(owner, to, tokenId);
}
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) public view virtual override returns (address) {
if (!_exists(tokenId)) revert ApprovalQueryForNonexistentToken();
return _tokenApprovals[tokenId].value;
}
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom}
* for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
_operatorApprovals[_msgSenderERC721A()][operator] = approved;
emit ApprovalForAll(_msgSenderERC721A(), operator, approved);
}
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev Returns whether `tokenId` exists.
*
* Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
*
* Tokens start existing when they are minted. See {_mint}.
*/
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return
_startTokenId() <= tokenId &&
tokenId < _currentIndex && // If within bounds,
_packedOwnerships[tokenId] & _BITMASK_BURNED == 0; // and not burned.
}
/**
* @dev Returns whether `msgSender` is equal to `approvedAddress` or `owner`.
*/
function _isSenderApprovedOrOwner(
address approvedAddress,
address owner,
address msgSender
) private pure returns (bool result) {
assembly {
// Mask `owner` to the lower 160 bits, in case the upper bits somehow aren't clean.
owner := and(owner, _BITMASK_ADDRESS)
// Mask `msgSender` to the lower 160 bits, in case the upper bits somehow aren't clean.
msgSender := and(msgSender, _BITMASK_ADDRESS)
// `msgSender == owner || msgSender == approvedAddress`.
result := or(eq(msgSender, owner), eq(msgSender, approvedAddress))
}
}
/**
* @dev Returns the storage slot and value for the approved address of `tokenId`.
*/
function _getApprovedSlotAndAddress(uint256 tokenId)
private
view
returns (uint256 approvedAddressSlot, address approvedAddress)
{
TokenApprovalRef storage tokenApproval = _tokenApprovals[tokenId];
// The following is equivalent to `approvedAddress = _tokenApprovals[tokenId].value`.
assembly {
approvedAddressSlot := tokenApproval.slot
approvedAddress := sload(approvedAddressSlot)
}
}
// =============================================================
// TRANSFER OPERATIONS
// =============================================================
/**
* @dev Transfers `tokenId` from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token
* by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) public payable virtual override {
uint256 prevOwnershipPacked = _packedOwnershipOf(tokenId);
if (address(uint160(prevOwnershipPacked)) != from) revert TransferFromIncorrectOwner();
(uint256 approvedAddressSlot, address approvedAddress) = _getApprovedSlotAndAddress(tokenId);
// The nested ifs save around 20+ gas over a compound boolean condition.
if (!_isSenderApprovedOrOwner(approvedAddress, from, _msgSenderERC721A()))
if (!isApprovedForAll(from, _msgSenderERC721A())) revert TransferCallerNotOwnerNorApproved();
if (to == address(0)) revert TransferToZeroAddress();
_beforeTokenTransfers(from, to, tokenId, 1);
// Clear approvals from the previous owner.
assembly {
if approvedAddress {
// This is equivalent to `delete _tokenApprovals[tokenId]`.
sstore(approvedAddressSlot, 0)
}
}
// Underflow of the sender's balance is impossible because we check for
// ownership above and the recipient's balance can't realistically overflow.
// Counter overflow is incredibly unrealistic as `tokenId` would have to be 2**256.
unchecked {
// We can directly increment and decrement the balances.
--_packedAddressData[from]; // Updates: `balance -= 1`.
++_packedAddressData[to]; // Updates: `balance += 1`.
// Updates:
// - `address` to the next owner.
// - `startTimestamp` to the timestamp of transfering.
// - `burned` to `false`.
// - `nextInitialized` to `true`.
_packedOwnerships[tokenId] = _packOwnershipData(
to,
_BITMASK_NEXT_INITIALIZED | _nextExtraData(from, to, prevOwnershipPacked)
);
// If the next slot may not have been initialized (i.e. `nextInitialized == false`) .
if (prevOwnershipPacked & _BITMASK_NEXT_INITIALIZED == 0) {
uint256 nextTokenId = tokenId + 1;
// If the next slot's address is zero and not burned (i.e. packed value is zero).
if (_packedOwnerships[nextTokenId] == 0) {
// If the next slot is within bounds.
if (nextTokenId != _currentIndex) {
// Initialize the next slot to maintain correctness for `ownerOf(tokenId + 1)`.
_packedOwnerships[nextTokenId] = prevOwnershipPacked;
}
}
}
}
emit Transfer(from, to, tokenId);
_afterTokenTransfers(from, to, tokenId, 1);
}
/**
* @dev Equivalent to `safeTransferFrom(from, to, tokenId, '')`.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) public payable virtual override {
safeTransferFrom(from, to, tokenId, '');
}
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token
* by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement
* {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes memory _data
) public payable virtual override {
transferFrom(from, to, tokenId);
if (to.code.length != 0)
if (!_checkContractOnERC721Received(from, to, tokenId, _data)) {
revert TransferToNonERC721ReceiverImplementer();
}
}
/**
* @dev Hook that is called before a set of serially-ordered token IDs
* are about to be transferred. This includes minting.
* And also called before burning one token.
*
* `startTokenId` - the first token ID to be transferred.
* `quantity` - the amount to be transferred.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, `from`'s `tokenId` will be
* transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, `tokenId` will be burned by `from`.
* - `from` and `to` are never both zero.
*/
function _beforeTokenTransfers(
address from,
address to,
uint256 startTokenId,
uint256 quantity
) internal virtual {}
/**
* @dev Hook that is called after a set of serially-ordered token IDs
* have been transferred. This includes minting.
* And also called after one token has been burned.
*
* `startTokenId` - the first token ID to be transferred.
* `quantity` - the amount to be transferred.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, `from`'s `tokenId` has been
* transferred to `to`.
* - When `from` is zero, `tokenId` has been minted for `to`.
* - When `to` is zero, `tokenId` has been burned by `from`.
* - `from` and `to` are never both zero.
*/
function _afterTokenTransfers(
address from,
address to,
uint256 startTokenId,
uint256 quantity
) internal virtual {}
/**
* @dev Private function to invoke {IERC721Receiver-onERC721Received} on a target contract.
*
* `from` - Previous owner of the given token ID.
* `to` - Target address that will receive the token.
* `tokenId` - Token ID to be transferred.
* `_data` - Optional data to send along with the call.
*
* Returns whether the call correctly returned the expected magic value.
*/
function _checkContractOnERC721Received(
address from,
address to,
uint256 tokenId,
bytes memory _data
) private returns (bool) {
try ERC721A__IERC721Receiver(to).onERC721Received(_msgSenderERC721A(), from, tokenId, _data) returns (
bytes4 retval
) {
return retval == ERC721A__IERC721Receiver(to).onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert TransferToNonERC721ReceiverImplementer();
} else {
assembly {
revert(add(32, reason), mload(reason))
}
}
}
}
// =============================================================
// MINT OPERATIONS
// =============================================================
/**
* @dev Mints `quantity` tokens and transfers them to `to`.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `quantity` must be greater than 0.
*
* Emits a {Transfer} event for each mint.
*/
function _mint(address to, uint256 quantity) internal virtual {
uint256 startTokenId = _currentIndex;
if (quantity == 0) revert MintZeroQuantity();
_beforeTokenTransfers(address(0), to, startTokenId, quantity);
// Overflows are incredibly unrealistic.
// `balance` and `numberMinted` have a maximum limit of 2**64.
// `tokenId` has a maximum limit of 2**256.
unchecked {
// Updates:
// - `balance += quantity`.
// - `numberMinted += quantity`.
//
// We can directly add to the `balance` and `numberMinted`.
_packedAddressData[to] += quantity * ((1 << _BITPOS_NUMBER_MINTED) | 1);
// Updates:
// - `address` to the owner.
// - `startTimestamp` to the timestamp of minting.
// - `burned` to `false`.
// - `nextInitialized` to `quantity == 1`.
_packedOwnerships[startTokenId] = _packOwnershipData(
to,
_nextInitializedFlag(quantity) | _nextExtraData(address(0), to, 0)
);
uint256 toMasked;
uint256 end = startTokenId + quantity;
// Use assembly to loop and emit the `Transfer` event for gas savings.
// The duplicated `log4` removes an extra check and reduces stack juggling.
// The assembly, together with the surrounding Solidity code, have been
// delicately arranged to nudge the compiler into producing optimized opcodes.
assembly {
// Mask `to` to the lower 160 bits, in case the upper bits somehow aren't clean.
toMasked := and(to, _BITMASK_ADDRESS)
// Emit the `Transfer` event.
log4(
0, // Start of data (0, since no data).
0, // End of data (0, since no data).
_TRANSFER_EVENT_SIGNATURE, // Signature.
0, // `address(0)`.
toMasked, // `to`.
startTokenId // `tokenId`.
)
// The `iszero(eq(,))` check ensures that large values of `quantity`
// that overflows uint256 will make the loop run out of gas.
// The compiler will optimize the `iszero` away for performance.
for {
let tokenId := add(startTokenId, 1)
} iszero(eq(tokenId, end)) {
tokenId := add(tokenId, 1)
} {
// Emit the `Transfer` event. Similar to above.
log4(0, 0, _TRANSFER_EVENT_SIGNATURE, 0, toMasked, tokenId)
}
}
if (toMasked == 0) revert MintToZeroAddress();
_currentIndex = end;
}
_afterTokenTransfers(address(0), to, startTokenId, quantity);
}
/**
* @dev Mints `quantity` tokens and transfers them to `to`.
*
* This function is intended for efficient minting only during contract creation.
*
* It emits only one {ConsecutiveTransfer} as defined in
* [ERC2309](https://eips.ethereum.org/EIPS/eip-2309),
* instead of a sequence of {Transfer} event(s).
*
* Calling this function outside of contract creation WILL make your contract
* non-compliant with the ERC721 standard.
* For full ERC721 compliance, substituting ERC721 {Transfer} event(s) with the ERC2309
* {ConsecutiveTransfer} event is only permissible during contract creation.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `quantity` must be greater than 0.
*
* Emits a {ConsecutiveTransfer} event.
*/
function _mintERC2309(address to, uint256 quantity) internal virtual {
uint256 startTokenId = _currentIndex;
if (to == address(0)) revert MintToZeroAddress();
if (quantity == 0) revert MintZeroQuantity();
if (quantity > _MAX_MINT_ERC2309_QUANTITY_LIMIT) revert MintERC2309QuantityExceedsLimit();
_beforeTokenTransfers(address(0), to, startTokenId, quantity);
// Overflows are unrealistic due to the above check for `quantity` to be below the limit.
unchecked {
// Updates:
// - `balance += quantity`.
// - `numberMinted += quantity`.
//
// We can directly add to the `balance` and `numberMinted`.
_packedAddressData[to] += quantity * ((1 << _BITPOS_NUMBER_MINTED) | 1);
// Updates:
// - `address` to the owner.
// - `startTimestamp` to the timestamp of minting.
// - `burned` to `false`.
// - `nextInitialized` to `quantity == 1`.
_packedOwnerships[startTokenId] = _packOwnershipData(
to,
_nextInitializedFlag(quantity) | _nextExtraData(address(0), to, 0)
);
emit ConsecutiveTransfer(startTokenId, startTokenId + quantity - 1, address(0), to);
_currentIndex = startTokenId + quantity;
}
_afterTokenTransfers(address(0), to, startTokenId, quantity);
}
/**
* @dev Safely mints `quantity` tokens and transfers them to `to`.
*
* Requirements:
*
* - If `to` refers to a smart contract, it must implement
* {IERC721Receiver-onERC721Received}, which is called for each safe transfer.
* - `quantity` must be greater than 0.
*
* See {_mint}.
*
* Emits a {Transfer} event for each mint.
*/
function _safeMint(
address to,
uint256 quantity,
bytes memory _data
) internal virtual {
_mint(to, quantity);
unchecked {
if (to.code.length != 0) {
uint256 end = _currentIndex;
uint256 index = end - quantity;
do {
if (!_checkContractOnERC721Received(address(0), to, index++, _data)) {
revert TransferToNonERC721ReceiverImplementer();
}
} while (index < end);
// Reentrancy protection.
if (_currentIndex != end) revert();
}
}
}
/**
* @dev Equivalent to `_safeMint(to, quantity, '')`.
*/
function _safeMint(address to, uint256 quantity) internal virtual {
_safeMint(to, quantity, '');
}
// =============================================================
// BURN OPERATIONS
// =============================================================
/**
* @dev Equivalent to `_burn(tokenId, false)`.
*/
function _burn(uint256 tokenId) internal virtual {
_burn(tokenId, false);
}
/**
* @dev Destroys `tokenId`.
* The approval is cleared when the token is burned.
*
* Requirements:
*
* - `tokenId` must exist.
*
* Emits a {Transfer} event.
*/
function _burn(uint256 tokenId, bool approvalCheck) internal virtual {
uint256 prevOwnershipPacked = _packedOwnershipOf(tokenId);
address from = address(uint160(prevOwnershipPacked));
(uint256 approvedAddressSlot, address approvedAddress) = _getApprovedSlotAndAddress(tokenId);
if (approvalCheck) {
// The nested ifs save around 20+ gas over a compound boolean condition.
if (!_isSenderApprovedOrOwner(approvedAddress, from, _msgSenderERC721A()))
if (!isApprovedForAll(from, _msgSenderERC721A())) revert TransferCallerNotOwnerNorApproved();
}
_beforeTokenTransfers(from, address(0), tokenId, 1);
// Clear approvals from the previous owner.
assembly {
if approvedAddress {
// This is equivalent to `delete _tokenApprovals[tokenId]`.
sstore(approvedAddressSlot, 0)
}
}
// Underflow of the sender's balance is impossible because we check for
// ownership above and the recipient's balance can't realistically overflow.
// Counter overflow is incredibly unrealistic as `tokenId` would have to be 2**256.
unchecked {
// Updates:
// - `balance -= 1`.
// - `numberBurned += 1`.
//
// We can directly decrement the balance, and increment the number burned.
// This is equivalent to `packed -= 1; packed += 1 << _BITPOS_NUMBER_BURNED;`.
_packedAddressData[from] += (1 << _BITPOS_NUMBER_BURNED) - 1;
// Updates:
// - `address` to the last owner.
// - `startTimestamp` to the timestamp of burning.
// - `burned` to `true`.
// - `nextInitialized` to `true`.
_packedOwnerships[tokenId] = _packOwnershipData(
from,
(_BITMASK_BURNED | _BITMASK_NEXT_INITIALIZED) | _nextExtraData(from, address(0), prevOwnershipPacked)
);
// If the next slot may not have been initialized (i.e. `nextInitialized == false`) .
if (prevOwnershipPacked & _BITMASK_NEXT_INITIALIZED == 0) {
uint256 nextTokenId = tokenId + 1;
// If the next slot's address is zero and not burned (i.e. packed value is zero).
if (_packedOwnerships[nextTokenId] == 0) {
// If the next slot is within bounds.
if (nextTokenId != _currentIndex) {
// Initialize the next slot to maintain correctness for `ownerOf(tokenId + 1)`.
_packedOwnerships[nextTokenId] = prevOwnershipPacked;
}
}
}
}
emit Transfer(from, address(0), tokenId);
_afterTokenTransfers(from, address(0), tokenId, 1);
// Overflow not possible, as _burnCounter cannot be exceed _currentIndex times.
unchecked {
_burnCounter++;
}
}
// =============================================================
// EXTRA DATA OPERATIONS
// =============================================================
/**
* @dev Directly sets the extra data for the ownership data `index`.
*/
function _setExtraDataAt(uint256 index, uint24 extraData) internal virtual {
uint256 packed = _packedOwnerships[index];
if (packed == 0) revert OwnershipNotInitializedForExtraData();
uint256 extraDataCasted;
// Cast `extraData` with assembly to avoid redundant masking.
assembly {
extraDataCasted := extraData
}
packed = (packed & _BITMASK_EXTRA_DATA_COMPLEMENT) | (extraDataCasted << _BITPOS_EXTRA_DATA);
_packedOwnerships[index] = packed;
}
/**
* @dev Called during each token transfer to set the 24bit `extraData` field.
* Intended to be overridden by the cosumer contract.
*
* `previousExtraData` - the value of `extraData` before transfer.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, `from`'s `tokenId` will be
* transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, `tokenId` will be burned by `from`.
* - `from` and `to` are never both zero.
*/
function _extraData(
address from,
address to,
uint24 previousExtraData
) internal view virtual returns (uint24) {}
/**
* @dev Returns the next extra data for the packed ownership data.
* The returned result is shifted into position.
*/
function _nextExtraData(
address from,
address to,
uint256 prevOwnershipPacked
) private view returns (uint256) {
uint24 extraData = uint24(prevOwnershipPacked >> _BITPOS_EXTRA_DATA);
return uint256(_extraData(from, to, extraData)) << _BITPOS_EXTRA_DATA;
}
// =============================================================
// OTHER OPERATIONS
// =============================================================
/**
* @dev Returns the message sender (defaults to `msg.sender`).
*
* If you are writing GSN compatible contracts, you need to override this function.
*/
function _msgSenderERC721A() internal view virtual returns (address) {
return msg.sender;
}
/**
* @dev Converts a uint256 to its ASCII string decimal representation.
*/
function _toString(uint256 value) internal pure virtual returns (string memory str) {
assembly {
// The maximum value of a uint256 contains 78 digits (1 byte per digit), but
// we allocate 0xa0 bytes to keep the free memory pointer 32-byte word aligned.
// We will need 1 word for the trailing zeros padding, 1 word for the length,
// and 3 words for a maximum of 78 digits. Total: 5 * 0x20 = 0xa0.
let m := add(mload(0x40), 0xa0)
// Update the free memory pointer to allocate.
mstore(0x40, m)
// Assign the `str` to the end.
str := sub(m, 0x20)
// Zeroize the slot after the string.
mstore(str, 0)
// Cache the end of the memory to calculate the length later.
let end := str
// We write the string from rightmost digit to leftmost digit.
// The following is essentially a do-while loop that also handles the zero case.
// prettier-ignore
for { let temp := value } 1 {} {
str := sub(str, 1)
// Write the character to the pointer.
// The ASCII index of the '0' character is 48.
mstore8(str, add(48, mod(temp, 10)))
// Keep dividing `temp` until zero.
temp := div(temp, 10)
// prettier-ignore
if iszero(temp) { break }
}
let length := sub(end, str)
// Move the pointer 32 bytes leftwards to make room for the length.
str := sub(str, 0x20)
// Store the length.
mstore(str, length)
}
}
}// SPDX-License-Identifier: MIT
// ERC721A Contracts v4.2.3
// Creator: Chiru Labs
pragma solidity ^0.8.4;
/**
* @dev Interface of ERC721A.
*/
interface IERC721A {
/**
* The caller must own the token or be an approved operator.
*/
error ApprovalCallerNotOwnerNorApproved();
/**
* The token does not exist.
*/
error ApprovalQueryForNonexistentToken();
/**
* Cannot query the balance for the zero address.
*/
error BalanceQueryForZeroAddress();
/**
* Cannot mint to the zero address.
*/
error MintToZeroAddress();
/**
* The quantity of tokens minted must be more than zero.
*/
error MintZeroQuantity();
/**
* The token does not exist.
*/
error OwnerQueryForNonexistentToken();
/**
* The caller must own the token or be an approved operator.
*/
error TransferCallerNotOwnerNorApproved();
/**
* The token must be owned by `from`.
*/
error TransferFromIncorrectOwner();
/**
* Cannot safely transfer to a contract that does not implement the
* ERC721Receiver interface.
*/
error TransferToNonERC721ReceiverImplementer();
/**
* Cannot transfer to the zero address.
*/
error TransferToZeroAddress();
/**
* The token does not exist.
*/
error URIQueryForNonexistentToken();
/**
* The `quantity` minted with ERC2309 exceeds the safety limit.
*/
error MintERC2309QuantityExceedsLimit();
/**
* The `extraData` cannot be set on an unintialized ownership slot.
*/
error OwnershipNotInitializedForExtraData();
// =============================================================
// STRUCTS
// =============================================================
struct TokenOwnership {
// The address of the owner.
address addr;
// Stores the start time of ownership with minimal overhead for tokenomics.
uint64 startTimestamp;
// Whether the token has been burned.
bool burned;
// Arbitrary data similar to `startTimestamp` that can be set via {_extraData}.
uint24 extraData;
}
// =============================================================
// TOKEN COUNTERS
// =============================================================
/**
* @dev Returns the total number of tokens in existence.
* Burned tokens will reduce the count.
* To get the total number of tokens minted, please see {_totalMinted}.
*/
function totalSupply() external view returns (uint256);
// =============================================================
// IERC165
// =============================================================
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* [EIP section](https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified)
* to learn more about how these ids are created.
*
* This function call must use less than 30000 gas.
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool);
// =============================================================
// IERC721
// =============================================================
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables or disables
* (`approved`) `operator` to manage all of its assets.
*/
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/**
* @dev Returns the number of tokens in `owner`'s account.
*/
function balanceOf(address owner) external view returns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) external view returns (address owner);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`,
* checking first that contract recipients are aware of the ERC721 protocol
* to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be have been allowed to move
* this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement
* {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes calldata data
) external payable;
/**
* @dev Equivalent to `safeTransferFrom(from, to, tokenId, '')`.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) external payable;
/**
* @dev Transfers `tokenId` from `from` to `to`.
*
* WARNING: Usage of this method is discouraged, use {safeTransferFrom}
* whenever possible.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token
* by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) external payable;
/**
* @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 payable;
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom}
* for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool _approved) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}.
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
// =============================================================
// IERC721Metadata
// =============================================================
/**
* @dev Returns the token collection name.
*/
function name() external view returns (string memory);
/**
* @dev Returns the token collection symbol.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
*/
function tokenURI(uint256 tokenId) external view returns (string memory);
// =============================================================
// IERC2309
// =============================================================
/**
* @dev Emitted when tokens in `fromTokenId` to `toTokenId`
* (inclusive) is transferred from `from` to `to`, as defined in the
* [ERC2309](https://eips.ethereum.org/EIPS/eip-2309) standard.
*
* See {_mintERC2309} for more details.
*/
event ConsecutiveTransfer(uint256 indexed fromTokenId, uint256 toTokenId, address indexed from, address indexed to);
}{
"optimizer": {
"enabled": false,
"runs": 200
},
"outputSelection": {
"*": {
"*": [
"evm.bytecode",
"evm.deployedBytecode",
"devdoc",
"userdoc",
"metadata",
"abi"
]
}
},
"libraries": {}
}Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
Contract ABI
API[{"inputs":[{"internalType":"address payable","name":"_withdrawalWallet","type":"address"},{"internalType":"string","name":"_name","type":"string"},{"internalType":"string","name":"_ticker","type":"string"},{"internalType":"string","name":"_baseURI","type":"string"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"ApprovalCallerNotOwnerNorApproved","type":"error"},{"inputs":[],"name":"ApprovalQueryForNonexistentToken","type":"error"},{"inputs":[],"name":"BalanceQueryForZeroAddress","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"},{"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":"address[]","name":"_userList","type":"address[]"}],"name":"addWhitelist","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"approve","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"buy","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"getApproved","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address[]","name":"_recipients","type":"address[]"},{"internalType":"uint256[]","name":"_amounts","type":"uint256[]"}],"name":"gift","outputs":[],"stateMutability":"nonpayable","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":[{"internalType":"address","name":"_user","type":"address"}],"name":"isWhitelisted","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"maxMintPerTxn","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"maxMintWhitelist","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"mintPrice","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"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":"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":"payable","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":"payable","type":"function"},{"inputs":[],"name":"saleActive","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"_baseURI","type":"string"}],"name":"setBaseURI","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_mintPrice","type":"uint256"}],"name":"setMintPrice","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_supplyLimit","type":"uint256"}],"name":"setSupplyLimit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_whitelistMintPrice","type":"uint256"}],"name":"setWhitelistMintPrice","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_user","type":"address"},{"internalType":"uint8","name":"_maxMint","type":"uint8"}],"name":"setWhitelistStatus","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address payable","name":"_withdrawalWallet","type":"address"}],"name":"setWhithdrawalWallet","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"supplyLimit","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","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":"toggleSaleActive","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"toggleWhitelistSaleActive","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"transferFrom","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"whitelist","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint8","name":"_amount","type":"uint8"}],"name":"whitelistBuy","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"whitelistMintPrice","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"whitelistSaleActive","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"withdrawalWallet","outputs":[{"internalType":"address payable","name":"","type":"address"}],"stateMutability":"view","type":"function"}]Contract Creation Code
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
Deployed Bytecode
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
Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
0000000000000000000000003f21b4e87642e80edc334977ebac7adc29ede1fc000000000000000000000000000000000000000000000000000000000000008000000000000000000000000000000000000000000000000000000000000000c000000000000000000000000000000000000000000000000000000000000001000000000000000000000000000000000000000000000000000000000000000004506570650000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000045045504500000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002768747470733a2f2f7777772e706570657065657065652e636f6d2f706c616365686f6c6465722f00000000000000000000000000000000000000000000000000
-----Decoded View---------------
Arg [0] : _withdrawalWallet (address): 0x3f21B4e87642E80EDC334977eBAC7aDc29EDe1Fc
Arg [1] : _name (string): Pepe
Arg [2] : _ticker (string): PEPE
Arg [3] : _baseURI (string): https://www.pepepeepee.com/placeholder/
-----Encoded View---------------
11 Constructor Arguments found :
Arg [0] : 0000000000000000000000003f21b4e87642e80edc334977ebac7adc29ede1fc
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000080
Arg [2] : 00000000000000000000000000000000000000000000000000000000000000c0
Arg [3] : 0000000000000000000000000000000000000000000000000000000000000100
Arg [4] : 0000000000000000000000000000000000000000000000000000000000000004
Arg [5] : 5065706500000000000000000000000000000000000000000000000000000000
Arg [6] : 0000000000000000000000000000000000000000000000000000000000000004
Arg [7] : 5045504500000000000000000000000000000000000000000000000000000000
Arg [8] : 0000000000000000000000000000000000000000000000000000000000000027
Arg [9] : 68747470733a2f2f7777772e706570657065657065652e636f6d2f706c616365
Arg [10] : 686f6c6465722f00000000000000000000000000000000000000000000000000
Loading...
Loading
Loading...
Loading
Net Worth in USD
$455.71
Net Worth in ETH
0.202521
Token Allocations
ETH
98.35%
BNB
1.64%
POL
0.00%
Multichain Portfolio | 33 Chains
Loading...
Loading
Loading...
Loading
Loading...
Loading
[ Download: CSV Export ]
[ Download: CSV Export ]
A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.