Address Contract Partially Verified
Address
0xc90F8443E89201F714C78B40352b790a39BaD203
Balance
0 ETH
Nonce
1
Code Size
16241 bytes
Creator
0x51527848...6b88 at tx 0xba521fac...dfb57d
Indexed Transactions
0
Contract Bytecode
16241 bytes
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Verified Source Code Partial Match
Compiler: v0.8.7+commit.e28d00a7
EVM: london
Optimization: No
HonoraryChads.sol 639 lines
// SPDX-License-Identifier: None
pragma solidity ^0.8.0;
interface IERC165 {
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
interface IERC721 is IERC165 {
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
function balanceOf(address owner) external view returns (uint256 balance);
function ownerOf(uint256 tokenId) external view returns (address owner);
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) external;
function transferFrom(
address from,
address to,
uint256 tokenId
) external;
function approve(address to, uint256 tokenId) external;
function getApproved(uint256 tokenId) external view returns (address operator);
function setApprovalForAll(address operator, bool _approved) external;
function isApprovedForAll(address owner, address operator) external view returns (bool);
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes calldata data
) external;
}
library Strings {
bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
function toString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
function toHexString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0x00";
}
uint256 temp = value;
uint256 length = 0;
while (temp != 0) {
length++;
temp >>= 8;
}
return toHexString(value, length);
}
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = _HEX_SYMBOLS[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
}
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor() {
_transferOwnership(_msgSender());
}
function owner() public view virtual returns (address) {
return _owner;
}
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
function renounceOwnership() public virtual onlyOwner {
_transferOwnership(address(0));
}
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_transferOwnership(newOwner);
}
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
library Address {
function isContract(address account) internal view returns (bool) {
uint256 size;
assembly {
size := extcodesize(account)
}
return size > 0;
}
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");
}
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
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");
}
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function _verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) private pure returns (bytes memory) {
if (success) {
return returndata;
} else {
if (returndata.length > 0) {
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
interface IERC721Receiver {
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}
abstract contract ERC165 is IERC165 {
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return interfaceId == type(IERC165).interfaceId;
}
}
interface IERC721Enumerable is IERC721 {
function totalSupply() external view returns (uint256);
function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId);
function tokenByIndex(uint256 index) external view returns (uint256);
}
interface IERC721Metadata is IERC721 {
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function tokenURI(uint256 tokenId) external view returns (string memory);
}
//ERC721A contract was taken as bases, but was modified, so that the indexing would start from 1
//Modified version name: ERC721VI
contract ERC721VI is Context, ERC165, IERC721, IERC721Metadata, IERC721Enumerable {
using Address for address;
using Strings for uint256;
struct TokenOwnership {
address addr;
uint64 startTimestamp;
}
struct AddressData {
uint128 balance;
uint128 numberMinted;
}
uint256 internal currentIndex = 1;
uint256 internal immutable maxBatchSize;
string private _name;
string private _symbol;
mapping(uint256 => TokenOwnership) internal _ownerships;
mapping(address => AddressData) private _addressData;
mapping(uint256 => address) private _tokenApprovals;
mapping(address => mapping(address => bool)) private _operatorApprovals;
constructor(
string memory name_,
string memory symbol_,
uint256 maxBatchSize_
) {
require(maxBatchSize_ > 0, 'ERC721VI: max batch size must be nonzero');
_name = name_;
_symbol = symbol_;
maxBatchSize = maxBatchSize_;
}
function totalSupply() public view override returns (uint256) {
return currentIndex - 1;
}
function tokenByIndex(uint256 index) public view override returns (uint256) {
require(index < totalSupply(), 'ERC721VI: global index out of bounds');
return index;
}
function tokenOfOwnerByIndex(address owner, uint256 index) public view override returns (uint256) {
require(index < balanceOf(owner), 'ERC721VI: owner index out of bounds');
uint256 numMintedSoFar = totalSupply();
uint256 tokenIdsIdx = 0;
address currOwnershipAddr = address(0);
for (uint256 i = 0; i < numMintedSoFar; i++) {
TokenOwnership memory ownership = _ownerships[i];
if (ownership.addr != address(0)) {
currOwnershipAddr = ownership.addr;
}
if (currOwnershipAddr == owner) {
if (tokenIdsIdx == index) {
return i;
}
tokenIdsIdx++;
}
}
revert('ERC721VI: unable to get token of owner by index');
}
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return
interfaceId == type(IERC721).interfaceId ||
interfaceId == type(IERC721Metadata).interfaceId ||
interfaceId == type(IERC721Enumerable).interfaceId ||
super.supportsInterface(interfaceId);
}
function balanceOf(address owner) public view override returns (uint256) {
require(owner != address(0), 'ERC721VI: balance query for the zero address');
return uint256(_addressData[owner].balance);
}
function _numberMinted(address owner) internal view returns (uint256) {
require(owner != address(0), 'ERC721VI: number minted query for the zero address');
return uint256(_addressData[owner].numberMinted);
}
function ownershipOf(uint256 tokenId) internal view returns (TokenOwnership memory) {
require(_exists(tokenId), 'ERC721VI: owner query for nonexistent token');
uint256 lowestTokenToCheck;
if (tokenId >= maxBatchSize) {
lowestTokenToCheck = tokenId - maxBatchSize + 1;
}
for (uint256 curr = tokenId; curr >= lowestTokenToCheck; curr--) {
TokenOwnership memory ownership = _ownerships[curr];
if (ownership.addr != address(0)) {
return ownership;
}
}
revert('ERC721VI: unable to determine the owner of token');
}
function ownerOf(uint256 tokenId) public view override returns (address) {
return ownershipOf(tokenId).addr;
}
function name() public view virtual override returns (string memory) {
return _name;
}
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
require(_exists(tokenId), 'ERC721Metadata: URI query for nonexistent token');
string memory baseURI = _baseURI();
return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : '';
}
function _baseURI() internal view virtual returns (string memory) {
return '';
}
function approve(address to, uint256 tokenId) public override {
address owner = ERC721VI.ownerOf(tokenId);
require(to != owner, 'ERC721VI: approval to current owner');
require(
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
'ERC721VI: approve caller is not owner nor approved for all'
);
_approve(to, tokenId, owner);
}
function getApproved(uint256 tokenId) public view override returns (address) {
require(_exists(tokenId), 'ERC721VI: approved query for nonexistent token');
return _tokenApprovals[tokenId];
}
function setApprovalForAll(address operator, bool approved) public override {
require(operator != _msgSender(), 'ERC721VI: approve to caller');
_operatorApprovals[_msgSender()][operator] = approved;
emit ApprovalForAll(_msgSender(), operator, approved);
}
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
function transferFrom(
address from,
address to,
uint256 tokenId
) public override {
_transfer(from, to, tokenId);
}
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) public override {
safeTransferFrom(from, to, tokenId, '');
}
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes memory _data
) public override {
_transfer(from, to, tokenId);
require(
_checkOnERC721Received(from, to, tokenId, _data),
'ERC721VI: transfer to non ERC721Receiver implementer'
);
}
function _exists(uint256 tokenId) internal view returns (bool) {
require(tokenId > 0, 'Indexing starts from 1');
return tokenId < currentIndex;
}
function _safeMint(address to, uint256 quantity) internal {
_safeMint(to, quantity, '');
}
function _safeMint(
address to,
uint256 quantity,
bytes memory _data
) internal {
uint256 startTokenId = currentIndex;
require(to != address(0), 'ERC721VI: mint to the zero address');
require(!_exists(startTokenId), 'ERC721VI: token already minted');
require(quantity <= maxBatchSize, 'ERC721VI: quantity to mint too high');
require(quantity > 0, 'ERC721VI: quantity must be greater 0');
_beforeTokenTransfers(address(0), to, startTokenId, quantity);
AddressData memory addressData = _addressData[to];
_addressData[to] = AddressData(
addressData.balance + uint128(quantity),
addressData.numberMinted + uint128(quantity)
);
_ownerships[startTokenId] = TokenOwnership(to, uint64(block.timestamp));
uint256 updatedIndex = startTokenId;
for (uint256 i = 0; i < quantity; i++) {
emit Transfer(address(0), to, updatedIndex);
require(
_checkOnERC721Received(address(0), to, updatedIndex, _data),
'ERC721VI: transfer to non ERC721Receiver implementer'
);
updatedIndex++;
}
currentIndex = updatedIndex;
_afterTokenTransfers(address(0), to, startTokenId, quantity);
}
function _transfer(
address from,
address to,
uint256 tokenId
) private {
TokenOwnership memory prevOwnership = ownershipOf(tokenId);
bool isApprovedOrOwner = (_msgSender() == prevOwnership.addr ||
getApproved(tokenId) == _msgSender() ||
isApprovedForAll(prevOwnership.addr, _msgSender()));
require(isApprovedOrOwner, 'ERC721VI: transfer caller is not owner nor approved');
require(prevOwnership.addr == from, 'ERC721VI: transfer from incorrect owner');
require(to != address(0), 'ERC721VI: transfer to the zero address');
_beforeTokenTransfers(from, to, tokenId, 1);
_approve(address(0), tokenId, prevOwnership.addr);
unchecked {
_addressData[from].balance -= 1;
_addressData[to].balance += 1;
}
_ownerships[tokenId] = TokenOwnership(to, uint64(block.timestamp));
uint256 nextTokenId = tokenId + 1;
if (_ownerships[nextTokenId].addr == address(0)) {
if (_exists(nextTokenId)) {
_ownerships[nextTokenId] = TokenOwnership(prevOwnership.addr, prevOwnership.startTimestamp);
}
}
emit Transfer(from, to, tokenId);
_afterTokenTransfers(from, to, tokenId, 1);
}
function _approve(
address to,
uint256 tokenId,
address owner
) private {
_tokenApprovals[tokenId] = to;
emit Approval(owner, to, tokenId);
}
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(to).onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert('ERC721VI: transfer to non ERC721Receiver implementer');
} else {
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
function _beforeTokenTransfers(
address from,
address to,
uint256 startTokenId,
uint256 quantity
) internal virtual {}
function _afterTokenTransfers(
address from,
address to,
uint256 startTokenId,
uint256 quantity
) internal virtual {}
}
/*
██╗░░██╗░█████╗░███╗░░██╗░█████╗░██████╗░░█████╗░██████╗░██╗░░░██╗ ░█████╗░██╗░░██╗░█████╗░██████╗░░██████╗
██║░░██║██╔══██╗████╗░██║██╔══██╗██╔══██╗██╔══██╗██╔══██╗╚██╗░██╔╝ ██╔══██╗██║░░██║██╔══██╗██╔══██╗██╔════╝
███████║██║░░██║██╔██╗██║██║░░██║██████╔╝███████║██████╔╝░╚████╔╝░ ██║░░╚═╝███████║███████║██║░░██║╚█████╗░
██╔══██║██║░░██║██║╚████║██║░░██║██╔══██╗██╔══██║██╔══██╗░░╚██╔╝░░ ██║░░██╗██╔══██║██╔══██║██║░░██║░╚═══██╗
██║░░██║╚█████╔╝██║░╚███║╚█████╔╝██║░░██║██║░░██║██║░░██║░░░██║░░░ ╚█████╔╝██║░░██║██║░░██║██████╔╝██████╔╝
╚═╝░░╚═╝░╚════╝░╚═╝░░╚══╝░╚════╝░╚═╝░░╚═╝╚═╝░░╚═╝╚═╝░░╚═╝░░░╚═╝░░░ ░╚════╝░╚═╝░░╚═╝╚═╝░░╚═╝╚═════╝░╚═════╝░
*/
contract HonoraryChads is ERC721VI, Ownable {
using Strings for uint256;
string private _apiURI = "";
bool public paused = true;
uint256 private maxPerTx = 10;
constructor() ERC721VI("Honorary Chads", "HChads", maxPerTx) {}
function mint(uint256 _mintAmount) external onlyOwner {
require(!paused, "The contract is paused for now!");
_safeMint(msg.sender, _mintAmount);
}
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
string memory currentBaseURI = _baseURI();
return bytes(currentBaseURI).length > 0 ? string(abi.encodePacked(currentBaseURI, tokenId.toString())) : "";
}
function togglePaused() public onlyOwner {
paused = !paused;
}
function _baseURI() internal view virtual override returns (string memory) {
return _apiURI;
}
function setBaseURI(string memory _uri) public onlyOwner {
_apiURI = _uri;
}
function setMaxPerTx(uint256 _maxPerTx) public onlyOwner {
maxPerTx = _maxPerTx;
}
function withdrawall() public onlyOwner {
uint256 _balance = address(this).balance;
require(payable(0x1B65a9816EF95229ACC3384E67956A7dFaB2b87c).send(_balance));
}
}
Read Contract
balanceOf 0x70a08231 → uint256
getApproved 0x081812fc → address
isApprovedForAll 0xe985e9c5 → bool
name 0x06fdde03 → string
owner 0x8da5cb5b → address
ownerOf 0x6352211e → address
paused 0x5c975abb → bool
supportsInterface 0x01ffc9a7 → bool
symbol 0x95d89b41 → string
tokenByIndex 0x4f6ccce7 → uint256
tokenOfOwnerByIndex 0x2f745c59 → uint256
tokenURI 0xc87b56dd → string
totalSupply 0x18160ddd → uint256
Write Contract 12 functions
These functions modify contract state and require a wallet transaction to execute.
approve 0x095ea7b3
address to
uint256 tokenId
mint 0xa0712d68
uint256 _mintAmount
renounceOwnership 0x715018a6
No parameters
safeTransferFrom 0x42842e0e
address from
address to
uint256 tokenId
safeTransferFrom 0xb88d4fde
address from
address to
uint256 tokenId
bytes _data
setApprovalForAll 0xa22cb465
address operator
bool approved
setBaseURI 0x55f804b3
string _uri
setMaxPerTx 0xc6f6f216
uint256 _maxPerTx
togglePaused 0x36566f06
No parameters
transferFrom 0x23b872dd
address from
address to
uint256 tokenId
transferOwnership 0xf2fde38b
address newOwner
withdrawall 0xf66c7281
No parameters
Recent Transactions
No transactions found for this address