Address Contract Verified
Address
0xc5EE84147Dfba018FBa884Ffe19B19c662D98964
Balance
0 ETH
Nonce
1
Code Size
11988 bytes
Creator
0x33Bf8cBE...6AeE at tx 0x3efc741b...006b82
Indexed Transactions
Index loading...
Contract Bytecode
11988 bytes
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Verified Source Code Full Match
Compiler: v0.8.20+commit.a1b79de6
EVM: shanghai
Optimization: Yes (200 runs)
Merch.sol 362 lines
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.20;
/**
* Merch VIP Pass – ERC721 NFT mintable per drop with ERC20 payment.
* - Implements ERC721 Enumerable so wallets (e.g. MetaMask) can discover and list tokens.
* - Owner sets drops (uri, maxSupply) and accepted payment tokens + cost per drop.
* - mint(dropId, paymentToken, quantity, size): transfers (cost * quantity) of paymentToken from msg.sender to this contract, then mints quantity NFTs. Size and quantity stored for fulfillment.
* - Order data (shipping address, quantity, size when burning) is recorded on the BurnToEarn contract; this contract only mints and holds NFTs.
*/
contract MerchVIPPass {
error DropNotConfigured();
error ExceedsMaxSupply();
error InsufficientPayment();
error InvalidDropId();
error InvalidQuantity();
error InvalidReceiver();
error NonexistentToken();
error NotOwnerOrApproved();
error NotTokenOwner();
error OnlyOwner();
error TokenNotAccepted();
error WrongFrom();
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);
event DropRemoved(uint256 indexed dropId);
string public name;
string public symbol;
address public owner;
uint256 private _nextTokenId = 1;
struct Drop {
string uri;
uint256 maxSupply;
uint256 mintedCount;
}
mapping(uint256 => Drop) public drops;
mapping(uint256 => string) public dropSizeOptions;
mapping(uint256 => mapping(address => uint256)) public costForDropToken;
mapping(uint256 => address[]) private _dropSpendingTokensList;
mapping(uint256 => mapping(address => bool)) private _dropTokenSet;
mapping(uint256 => uint256) public tokenDropId;
/// @dev What the minter specified at mint time (for fulfillment/shipping).
mapping(uint256 => string) public tokenMintSize;
mapping(uint256 => uint256) public tokenMintQuantity;
mapping(uint256 => address) private _ownerOf;
mapping(uint256 => address) private _getApproved;
mapping(address => uint256) private _balanceOf;
mapping(address => mapping(address => bool)) private _isApprovedForAll;
uint256[] private _allTokens;
mapping(uint256 => uint256) private _allTokensIndex;
mapping(address => uint256[]) private _ownedTokens;
mapping(uint256 => uint256) private _ownedTokensIndex;
modifier onlyOwner() {
if (msg.sender != owner) revert OnlyOwner();
_;
}
constructor(string memory _name, string memory _symbol) {
name = _name;
symbol = _symbol;
owner = msg.sender;
}
function setDrop(uint256 dropId, string calldata uri, uint256 maxSupply) external onlyOwner {
if (dropId == 0) revert InvalidDropId();
drops[dropId] = Drop({ uri: uri, maxSupply: maxSupply, mintedCount: drops[dropId].mintedCount });
}
/// @dev Remove a drop so the dropId can be redeployed (setDrop + setDropSizeOptions + setDropSpendingToken again). Clears uri, maxSupply, mintedCount, size options, and payment costs for this drop. Already-minted tokens keep tokenDropId = dropId and will use whatever drop config is set next for tokenURI.
function removeDrop(uint256 dropId) external onlyOwner {
if (dropId == 0) revert InvalidDropId();
drops[dropId] = Drop({ uri: "", maxSupply: 0, mintedCount: 0 });
dropSizeOptions[dropId] = "";
address[] memory tokens = _dropSpendingTokensList[dropId];
for (uint256 i = 0; i < tokens.length; i++) {
costForDropToken[dropId][tokens[i]] = 0;
_dropTokenSet[dropId][tokens[i]] = false;
}
delete _dropSpendingTokensList[dropId];
emit DropRemoved(dropId);
}
function setDropSizeOptions(uint256 dropId, string calldata sizes) external onlyOwner {
dropSizeOptions[dropId] = sizes;
}
mapping(address => bool) private _tracked;
function setDropSpendingToken(uint256 dropId, address erc20, uint256 cost) external onlyOwner {
if (!_dropTokenSet[dropId][erc20] && erc20 != address(0)) {
_dropSpendingTokensList[dropId].push(erc20);
_dropTokenSet[dropId][erc20] = true;
if (!_tracked[erc20]) {
_trackedTokens.push(erc20);
_tracked[erc20] = true;
}
}
costForDropToken[dropId][erc20] = cost;
}
function getDropInfo(uint256 dropId) external view returns (string memory uri, uint256 maxSupply, uint256 mintedCount) {
Drop storage d = drops[dropId];
return (d.uri, d.maxSupply, d.mintedCount);
}
function getDropSizeOptions(uint256 dropId) external view returns (string memory) {
return dropSizeOptions[dropId];
}
function getCostForDropToken(uint256 dropId, address erc20) external view returns (uint256) {
return costForDropToken[dropId][erc20];
}
function getDropSpendingTokenList(uint256 dropId) external view returns (address[] memory) {
return _dropSpendingTokensList[dropId];
}
function getTokenDropId(uint256 tokenId) external view returns (uint256) {
return tokenDropId[tokenId];
}
/// @dev Transfers (cost * quantity) of paymentToken from msg.sender to this contract, then mints quantity NFTs. Records size and quantity per token for fulfillment.
function mint(uint256 dropId, address paymentToken, uint256 quantity, string calldata size) external {
if (dropId == 0) revert InvalidDropId();
Drop storage d = drops[dropId];
if (bytes(d.uri).length == 0 || d.maxSupply == 0) revert DropNotConfigured();
if (quantity == 0 || quantity > 100) revert InvalidQuantity();
uint256 cost = costForDropToken[dropId][paymentToken];
if (cost == 0) revert TokenNotAccepted();
uint256 totalCost = cost * quantity;
if (totalCost == 0) revert InsufficientPayment();
if (d.mintedCount + quantity > d.maxSupply) revert ExceedsMaxSupply();
(bool ok, bytes memory data) = paymentToken.call(
abi.encodeWithSelector(
0x23b872dd, // transferFrom(address,address,uint256)
msg.sender,
address(this),
totalCost
)
);
if (!ok) revert InsufficientPayment();
if (data.length >= 32 && !abi.decode(data, (bool))) revert InsufficientPayment();
for (uint256 i = 0; i < quantity; i++) {
uint256 tokenId = _nextTokenId++;
tokenDropId[tokenId] = dropId;
tokenMintSize[tokenId] = size;
tokenMintQuantity[tokenId] = quantity;
d.mintedCount += 1;
_mint(msg.sender, tokenId);
}
}
function _mint(address to, uint256 tokenId) internal {
if (to == address(0)) revert InvalidReceiver();
if (_ownerOf[tokenId] != address(0)) revert WrongFrom();
_ownerOf[tokenId] = to;
_balanceOf[to] += 1;
_allTokensIndex[tokenId] = _allTokens.length;
_allTokens.push(tokenId);
_ownedTokensIndex[tokenId] = _ownedTokens[to].length;
_ownedTokens[to].push(tokenId);
emit Transfer(address(0), to, tokenId);
}
function supportsInterface(bytes4 interfaceId) external pure returns (bool) {
return interfaceId == 0x01ffc9a7 // IERC165
|| interfaceId == 0x80ac58cd // IERC721
|| interfaceId == 0x5b5e139f // IERC721Metadata
|| interfaceId == 0x780e9d63; // IERC721Enumerable
}
function balanceOf(address account) external view returns (uint256) {
return _balanceOf[account];
}
function ownerOf(uint256 tokenId) public view returns (address) {
address o = _ownerOf[tokenId];
if (o == address(0)) revert NonexistentToken();
return o;
}
/// @dev If drop uri ends with ".json", use it for every token (single metadata for whole drop). Else append tokenId.json to folder uri.
function tokenURI(uint256 tokenId) external view returns (string memory) {
if (_ownerOf[tokenId] == address(0)) revert NonexistentToken();
uint256 did = tokenDropId[tokenId];
string memory base = drops[did].uri;
if (bytes(base).length == 0) return "";
uint256 len = bytes(base).length;
if (len >= 5 && _endsWithJson(base)) {
return base;
}
if (len > 0 && bytes(base)[len - 1] == "/") {
return string(abi.encodePacked(base, _uint2str(tokenId), ".json"));
}
return string(abi.encodePacked(base, "/", _uint2str(tokenId), ".json"));
}
function _endsWithJson(string memory s) internal pure returns (bool) {
bytes memory b = bytes(s);
if (b.length < 5) return false;
return b[b.length - 1] == "n" && b[b.length - 2] == "o" && b[b.length - 3] == "s" && b[b.length - 4] == "j" && b[b.length - 5] == ".";
}
function _uint2str(uint256 v) internal pure returns (string memory) {
if (v == 0) return "0";
uint256 j = v;
uint256 len;
while (j != 0) { len++; j /= 10; }
bytes memory b = new bytes(len);
while (v != 0) {
len--;
b[len] = bytes1(uint8(48 + v % 10));
v /= 10;
}
return string(b);
}
function getApproved(uint256 tokenId) external view returns (address) {
if (_ownerOf[tokenId] == address(0)) revert NonexistentToken();
return _getApproved[tokenId];
}
function setApprovalForAll(address operator, bool approved) external {
_isApprovedForAll[msg.sender][operator] = approved;
emit ApprovalForAll(msg.sender, operator, approved);
}
function isApprovedForAll(address account, address operator) external view returns (bool) {
return _isApprovedForAll[account][operator];
}
function approve(address to, uint256 tokenId) external {
address o = ownerOf(tokenId);
if (to == o) revert InvalidReceiver();
if (msg.sender != o && !_isApprovedForAll[o][msg.sender]) revert NotOwnerOrApproved();
_getApproved[tokenId] = to;
emit Approval(o, to, tokenId);
}
function transferFrom(address from, address to, uint256 tokenId) external {
if (from != _ownerOf[tokenId]) revert WrongFrom();
if (to == address(0)) revert InvalidReceiver();
if (msg.sender != from && msg.sender != _getApproved[tokenId] && !_isApprovedForAll[from][msg.sender]) revert NotOwnerOrApproved();
_transfer(from, to, tokenId);
}
function safeTransferFrom(address from, address to, uint256 tokenId) external {
safeTransferFrom(from, to, tokenId, bytes(""));
}
function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory data) public {
if (from != _ownerOf[tokenId]) revert WrongFrom();
if (to == address(0)) revert InvalidReceiver();
if (msg.sender != from && msg.sender != _getApproved[tokenId] && !_isApprovedForAll[from][msg.sender]) revert NotOwnerOrApproved();
_transfer(from, to, tokenId);
if (to.code.length > 0) {
bytes4 selector = 0x150b7a02; // onERC721Received(address,address,uint256,bytes)
(bool ok, bytes memory ret) = to.call(abi.encodeWithSelector(selector, msg.sender, from, tokenId, data));
if (!ok || ret.length < 4 || abi.decode(ret, (bytes4)) != selector) revert InvalidReceiver();
}
}
function _transfer(address from, address to, uint256 tokenId) internal {
_removeTokenFromOwnerEnumeration(from, tokenId);
_addTokenToOwnerEnumeration(to, tokenId);
_ownerOf[tokenId] = to;
_balanceOf[from] -= 1;
_balanceOf[to] += 1;
_getApproved[tokenId] = address(0);
emit Transfer(from, to, tokenId);
}
function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private {
uint256 lastIndex = _ownedTokens[from].length - 1;
uint256 tokenIndex = _ownedTokensIndex[tokenId];
if (tokenIndex != lastIndex) {
uint256 lastTokenId = _ownedTokens[from][lastIndex];
_ownedTokens[from][tokenIndex] = lastTokenId;
_ownedTokensIndex[lastTokenId] = tokenIndex;
}
_ownedTokens[from].pop();
delete _ownedTokensIndex[tokenId];
}
function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private {
_ownedTokensIndex[tokenId] = _ownedTokens[to].length;
_ownedTokens[to].push(tokenId);
}
function totalSupply() external view returns (uint256) {
return _allTokens.length;
}
function tokenByIndex(uint256 index) external view returns (uint256) {
if (index >= _allTokens.length) revert NonexistentToken();
return _allTokens[index];
}
function tokenOfOwnerByIndex(address owner_, uint256 index) external view returns (uint256) {
if (index >= _ownedTokens[owner_].length) revert NonexistentToken();
return _ownedTokens[owner_][index];
}
function getSpendingTokenList() external view returns (address[] memory) {
return _dropSpendingTokensList[1];
}
address[] private _trackedTokens;
function withdrawERC20(address token, uint256 amount) external onlyOwner {
(bool ok,) = token.call(abi.encodeWithSelector(0xa9059cbb, owner, amount));
require(ok, "transfer failed");
}
function withdrawETH() external onlyOwner {
(bool ok,) = owner.call{ value: address(this).balance }("");
require(ok, "send failed");
}
function withdrawAllTokens(address[] calldata tokens) external onlyOwner {
for (uint256 i = 0; i < tokens.length; i++) {
address t = tokens[i];
uint256 bal = _erc20Balance(t);
if (bal > 0) {
(bool ok,) = t.call(abi.encodeWithSelector(0xa9059cbb, owner, bal));
require(ok, "transfer failed");
}
}
}
function withdrawAllTrackedTokens() external onlyOwner {
for (uint256 i = 0; i < _trackedTokens.length; i++) {
address t = _trackedTokens[i];
uint256 bal = _erc20Balance(t);
if (bal > 0) {
(bool ok,) = t.call(abi.encodeWithSelector(0xa9059cbb, owner, bal));
require(ok, "transfer failed");
}
}
}
function _erc20Balance(address token) internal view returns (uint256) {
(bool ok, bytes memory data) = token.staticcall(abi.encodeWithSelector(0x70a08231, address(this)));
if (!ok || data.length < 32) return 0;
return abi.decode(data, (uint256));
}
receive() external payable {}
}
Read Contract
balanceOf 0x70a08231 → uint256
costForDropToken 0xcc9daa9f → uint256
dropSizeOptions 0xbcf15976 → string
drops 0x5eb39968 → string, uint256, uint256
getApproved 0x081812fc → address
getCostForDropToken 0x03fb2e70 → uint256
getDropInfo 0xd7bdea57 → string, uint256, uint256
getDropSizeOptions 0x79b302a9 → string
getDropSpendingTokenList 0xbd773c2e → address[]
getSpendingTokenList 0xfd842c57 → address[]
getTokenDropId 0x2847fc00 → uint256
isApprovedForAll 0xe985e9c5 → bool
name 0x06fdde03 → string
owner 0x8da5cb5b → address
ownerOf 0x6352211e → address
supportsInterface 0x01ffc9a7 → bool
symbol 0x95d89b41 → string
tokenByIndex 0x4f6ccce7 → uint256
tokenDropId 0x79f919c7 → uint256
tokenMintQuantity 0x88158905 → uint256
tokenMintSize 0xe9595a5a → string
tokenOfOwnerByIndex 0x2f745c59 → uint256
tokenURI 0xc87b56dd → string
totalSupply 0x18160ddd → uint256
Write Contract 14 functions
These functions modify contract state and require a wallet transaction to execute.
approve 0x095ea7b3
address to
uint256 tokenId
mint 0xaf131f50
uint256 dropId
address paymentToken
uint256 quantity
string size
removeDrop 0x9cbc994d
uint256 dropId
safeTransferFrom 0x42842e0e
address from
address to
uint256 tokenId
safeTransferFrom 0xb88d4fde
address from
address to
uint256 tokenId
bytes data
setApprovalForAll 0xa22cb465
address operator
bool approved
setDrop 0x2a5aeb1d
uint256 dropId
string uri
uint256 maxSupply
setDropSizeOptions 0x19ad94d8
uint256 dropId
string sizes
setDropSpendingToken 0x0f15ad10
uint256 dropId
address erc20
uint256 cost
transferFrom 0x23b872dd
address from
address to
uint256 tokenId
withdrawAllTokens 0xf57f2e12
address[] tokens
withdrawAllTrackedTokens 0x3e002236
No parameters
withdrawERC20 0xa1db9782
address token
uint256 amount
withdrawETH 0xe086e5ec
No parameters
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