文件 20 的 20：miner.sol
pragma solidity 0.8.24;
import {Address} from "@openzeppelin/contracts/utils/Address.sol";
import {Context} from "@openzeppelin/contracts/utils/Context.sol";
import {Strings} from "@openzeppelin/contracts/utils/Strings.sol";
import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {IERC20Metadata} from "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol";
import {IERC20Errors} from "@openzeppelin/contracts/interfaces/draft-IERC6093.sol";
import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";
import {IERC721} from "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import {IERC721Metadata} from "@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol";
import {IERC721Receiver} from "@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol";
import {IERC1155} from "@openzeppelin/contracts/token/ERC1155/IERC1155.sol";
import {IERC1155Receiver} from "@openzeppelin/contracts/token/ERC1155/IERC1155Receiver.sol";
import {IERC1155MetadataURI} from "@openzeppelin/contracts/token/ERC1155/extensions/IERC1155MetadataURI.sol";
import {IERC165, ERC165} from "@openzeppelin/contracts/utils/introspection/ERC165.sol";
import {IERC721Errors} from "@openzeppelin/contracts/interfaces/draft-IERC6093.sol";
import {LibBitmap} from "https://github.com/Vectorized/solady/blob/main/src/utils/LibBitmap.sol";
import {LibBit} from "https://github.com/vectorized/solady/blob/main/src/utils/LibBit.sol";
interface IERCX {
error ApprovalCallerNotOwnerNorApproved();
error BalanceQueryForZeroAddress();
error MintToZeroAddress();
error MintZeroQuantity();
error BurnFromZeroAddress();
error BurnFromNonOwnerAddress();
error TransferCallerNotOwnerNorApproved();
error TransferFromIncorrectOwnerOrInvalidAmount();
error TransferToNonERC1155ReceiverImplementer();
error TransferToNonERC721ReceiverImplementer();
error TransferToZeroAddress();
error InputLengthMistmatch();
error Reentrance();
function isOwnerOf(address account, uint256 id) external view returns(bool);
}
abstract contract ERC721Receiver is IERC721Receiver {
function onERC721Received(
address,
address,
uint256,
bytes calldata
) external virtual returns (bytes4) {
return ERC721Receiver.onERC721Received.selector;
}
}
contract ERCX is Context, ERC165, IERC1155, IERC1155MetadataURI, IERCX, IERC20Metadata, IERC20Errors, Ownable {
using Address for address;
using LibBitmap for LibBitmap.Bitmap;
error InvalidQueryRange();
event WhitelistEnabled(address indexed wallet);
event WhitelistDisabled(address indexed wallet);
event URIUpdated();
event TransfersDelayUpdated(bool status);
event MaxWalletUpdated(uint256 max);
uint256 private constant _BITMASK_ADDRESS = (1 << 160) - 1;
bytes32 private constant _TRANSFER_EVENT_SIGNATURE = 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef;
mapping(address => LibBitmap.Bitmap) internal _owned;
mapping(address => mapping(address => bool)) private _operatorApprovals;
string private _uri;
uint256 private _currentIndex;
mapping(uint256 => address) public getApproved;
mapping(address => uint256) internal _balances;
mapping(address account => mapping(address spender => uint256)) private _allowances;
string public name;
string public symbol;
uint8 public immutable decimals;
uint256 public immutable totalSupply;
uint256 public immutable decimalFactor;
uint256 public immutable tokensPerNFT;
mapping(address => bool) public whitelist;
uint256 public easyLaunch = 1;
constructor(string memory uri_, string memory _name, string memory _symbol, uint8 _decimals, uint256 _totalNativeSupply, uint256 _tokensPerNFT) Ownable(msg.sender) {
_setURI(uri_);
_currentIndex = _startTokenId();
name = _name;
symbol = _symbol;
decimals = _decimals;
decimalFactor = 10 ** decimals;
tokensPerNFT = _tokensPerNFT * decimalFactor;
totalSupply = _totalNativeSupply * decimalFactor;
whitelist[msg.sender] = true;
_balances[msg.sender] = totalSupply;
emit Transfer(address(0), msg.sender, totalSupply);
}
function setWhitelist(address target, bool state) public virtual onlyOwner {
require(whitelist[target] != state, "No change to status");
if(state) {
uint256 bal = balanceOf(target,0,_nextTokenId());
if(bal > 0)
_burnBatch(target, bal);
emit WhitelistEnabled(target);
} else {
uint256 bal = balanceOf(target);
uint256 tokens_to_mint = bal / tokensPerNFT;
if(tokens_to_mint > 0)
_mintWithoutCheck(target, tokens_to_mint);
emit WhitelistDisabled(target);
}
whitelist[target] = state;
}
function _startTokenId() internal pure virtual returns (uint256) {
return 1;
}
function _nextTokenId() internal view returns (uint256) {
return _currentIndex;
}
function _totalMinted() internal view returns (uint256) {
return _nextTokenId() - _startTokenId();
}
function isOwnerOf(address account, uint256 id) public view virtual override returns(bool) {
return _owned[account].get(id);
}
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return
interfaceId == type(IERC1155).interfaceId ||
interfaceId == type(IERC1155MetadataURI).interfaceId ||
interfaceId == type(IERCX).interfaceId ||
interfaceId == 0x80ac58cd ||
interfaceId == 0x5b5e139f ||
super.supportsInterface(interfaceId);
}
function uri(uint256) public view virtual override returns (string memory) {
return _uri;
}
function balanceOf(address owner) public view virtual returns (uint256) {
return _balances[owner];
}
function balanceOf(address owner, uint256 start, uint256 stop) public view virtual returns (uint256) {
return _owned[owner].popCount(start, stop - start);
}
function balanceOf(address account, uint256 id) public view virtual override returns (uint256) {
if(account == address(0)) {
revert BalanceQueryForZeroAddress();
}
if(_owned[account].get(id)) {
return 1;
} else {
return 0;
}
}
function balanceOfBatch(address[] memory accounts, uint256[] memory ids)
public
view
virtual
override
returns (uint256[] memory)
{
if(accounts.length != ids.length) {
revert InputLengthMistmatch();
}
uint256[] memory batchBalances = new uint256[](accounts.length);
for (uint256 i = 0; i < accounts.length; ++i) {
batchBalances[i] = balanceOf(accounts[i], ids[i]);
}
return batchBalances;
}
function setApprovalForAll(address operator, bool approved) public virtual override {
_setApprovalForAll(_msgSender(), operator, approved);
}
function isApprovedForAll(address account, address operator) public view virtual override returns (bool) {
return _operatorApprovals[account][operator];
}
function safeTransferFrom(
address from,
address to,
uint256 id,
uint256 amount,
bytes memory data
) public virtual override {
if(from == _msgSender() || isApprovedForAll(from, _msgSender())){
_safeTransferFrom(from, to, id, amount, data, true);
} else {
revert TransferCallerNotOwnerNorApproved();
}
}
function safeBatchTransferFrom(
address from,
address to,
uint256[] memory ids,
uint256[] memory amounts,
bytes memory data
) public virtual override {
if(!(from == _msgSender() || isApprovedForAll(from, _msgSender()))) {
revert TransferCallerNotOwnerNorApproved();
}
_safeBatchTransferFrom(from, to, ids, amounts, data);
}
function _safeTransferFrom(
address from,
address to,
uint256 id,
uint256 amount,
bytes memory data,
bool check
) internal virtual {
if(to == address(0)) {
revert TransferToZeroAddress();
}
address operator = _msgSender();
uint256[] memory ids = _asSingletonArray(id);
_beforeTokenTransfer(operator, from, to, ids);
if(amount == 1 && _owned[from].get(id)) {
_owned[from].unset(id);
_owned[to].set(id);
_transfer(from, to, tokensPerNFT, false);
} else {
revert TransferFromIncorrectOwnerOrInvalidAmount();
}
uint256 toMasked;
uint256 fromMasked;
assembly {
toMasked := and(to, _BITMASK_ADDRESS)
fromMasked := and(from, _BITMASK_ADDRESS)
log4(
0,
0,
_TRANSFER_EVENT_SIGNATURE,
fromMasked,
toMasked,
amount
)
}
emit TransferSingle(operator, from, to, id, amount);
_afterTokenTransfer(operator, from, to, ids);
if(check) {
uint256 end = _nextTokenId();
_doSafeTransferAcceptanceCheck(operator, from, to, id, amount, data);
if (_nextTokenId() != end) revert Reentrance();
}
}
function _safeBatchTransferFrom(
address from,
address to,
uint256[] memory ids,
uint256[] memory amounts,
bytes memory data
) internal virtual {
if(ids.length != amounts.length) {
revert InputLengthMistmatch();
}
if(to == address(0)) {
revert TransferToZeroAddress();
}
address operator = _msgSender();
_beforeTokenTransfer(operator, from, to, ids);
for (uint256 i = 0; i < ids.length; ++i) {
uint256 id = ids[i];
uint256 amount = amounts[i];
if(amount == 1 && _owned[from].get(id)) {
_owned[from].unset(id);
_owned[to].set(id);
} else {
revert TransferFromIncorrectOwnerOrInvalidAmount();
}
}
_transfer(from, to, tokensPerNFT * ids.length, false);
uint256 toMasked;
uint256 fromMasked;
uint256 end = ids.length + 1;
assembly {
fromMasked := and(from, _BITMASK_ADDRESS)
toMasked := and(to, _BITMASK_ADDRESS)
log4(
0,
0,
_TRANSFER_EVENT_SIGNATURE,
fromMasked,
toMasked,
mload(add(ids, 0x20))
)
for {
let arrayId := 2
} iszero(eq(arrayId, end)) {
arrayId := add(arrayId, 1)
} {
log4(0, 0, _TRANSFER_EVENT_SIGNATURE, fromMasked, toMasked, mload(add(ids, mul(0x20, arrayId))))
}
}
emit TransferBatch(operator, from, to, ids, amounts);
_afterTokenTransfer(operator, from, to, ids);
uint256 tokID = _nextTokenId();
_doSafeBatchTransferAcceptanceCheck(operator, from, to, ids, amounts, data);
if (_nextTokenId() != tokID) revert Reentrance();
}
function _setURI(string memory newuri) internal virtual {
_uri = newuri;
}
function _mint(
address to,
uint256 amount,
bytes memory data
) internal virtual {
(uint256[] memory ids, uint256[] memory amounts) = _mintWithoutCheck(to, amount);
uint256 end = _nextTokenId();
_doSafeBatchTransferAcceptanceCheck(_msgSender(), address(0), to, ids, amounts, data);
if (_nextTokenId() != end) revert Reentrance();
}
function _mintWithoutCheck(
address to,
uint256 amount
) internal virtual returns(uint256[] memory ids, uint256[] memory amounts) {
if(to == address(0)) {
revert MintToZeroAddress();
}
if(amount == 0) {
revert MintZeroQuantity();
}
address operator = _msgSender();
ids = new uint256[](amount);
amounts = new uint256[](amount);
uint256 startTokenId = _nextTokenId();
unchecked {
require(type(uint256).max - amount >= startTokenId, "Minting limits reached");
for(uint256 i = 0; i < amount; i++) {
ids[i] = startTokenId + i;
amounts[i] = 1;
}
}
_beforeTokenTransfer(operator, address(0), to, ids);
_owned[to].setBatch(startTokenId, amount);
_currentIndex += amount;
uint256 toMasked;
uint256 end = startTokenId + amount;
assembly {
toMasked := and(to, _BITMASK_ADDRESS)
log4(
0,
0,
_TRANSFER_EVENT_SIGNATURE,
0,
toMasked,
startTokenId
)
for {
let tokenId := add(startTokenId, 1)
} iszero(eq(tokenId, end)) {
tokenId := add(tokenId, 1)
} {
log4(0, 0, _TRANSFER_EVENT_SIGNATURE, 0, toMasked, tokenId)
}
}
emit TransferBatch(operator, address(0), to, ids, amounts);
_afterTokenTransfer(operator, address(0), to, ids);
}
function _burn(
address from,
uint256 id
) internal virtual {
if(from == address(0)){
revert BurnFromZeroAddress();
}
address operator = _msgSender();
uint256[] memory ids = _asSingletonArray(id);
_beforeTokenTransfer(operator, from, address(0), ids);
if(!_owned[from].get(id)) {
revert BurnFromNonOwnerAddress();
}
_owned[from].unset(id);
uint256 fromMasked;
assembly {
fromMasked := and(from, _BITMASK_ADDRESS)
log4(
0,
0,
_TRANSFER_EVENT_SIGNATURE,
fromMasked,
0,
id
)
}
emit TransferSingle(operator, from, address(0), id, 1);
_afterTokenTransfer(operator, from, address(0), ids);
}
function _burnBatch(
address from,
uint256[] memory ids
) internal virtual {
if(from == address(0)){
revert BurnFromZeroAddress();
}
address operator = _msgSender();
uint256[] memory amounts = new uint256[](ids.length);
_beforeTokenTransfer(operator, from, address(0), ids);
unchecked {
for(uint256 i = 0; i < ids.length; i++) {
amounts[i] = 1;
uint256 id = ids[i];
if(!_owned[from].get(id)) {
revert BurnFromNonOwnerAddress();
}
_owned[from].unset(id);
}
}
uint256 fromMasked;
uint256 end = ids.length + 1;
assembly {
fromMasked := and(from, _BITMASK_ADDRESS)
log4(
0,
0,
_TRANSFER_EVENT_SIGNATURE,
fromMasked,
0,
mload(add(ids, 0x20))
)
for {
let arrayId := 2
} iszero(eq(arrayId, end)) {
arrayId := add(arrayId, 1)
} {
log4(0, 0, _TRANSFER_EVENT_SIGNATURE, fromMasked, 0, mload(add(ids, mul(0x20, arrayId))))
}
}
emit TransferBatch(operator, from, address(0), ids, amounts);
_afterTokenTransfer(operator, from, address(0), ids);
}
function _burnBatch(
address from,
uint256 amount
) internal virtual {
if(from == address(0)){
revert BurnFromZeroAddress();
}
address operator = _msgSender();
uint256 searchFrom = _nextTokenId();
uint256[] memory amounts = new uint256[](amount);
uint256[] memory ids = new uint256[](amount);
unchecked {
for(uint256 i = 0; i < amount; i++) {
amounts[i] = 1;
uint256 id = _owned[from].findLastSet(searchFrom);
if(id == LibBitmap.NOT_FOUND) revert BurnFromNonOwnerAddress();
ids[i] = id;
_owned[from].unset(id);
searchFrom = id;
}
}
_beforeTokenTransfer(operator, from, address(0), ids);
uint256 fromMasked;
uint256 end = amount + 1;
assembly {
fromMasked := and(from, _BITMASK_ADDRESS)
log4(
0,
0,
_TRANSFER_EVENT_SIGNATURE,
fromMasked,
0,
mload(add(ids, 0x20))
)
for {
let arrayId := 2
} iszero(eq(arrayId, end)) {
arrayId := add(arrayId, 1)
} {
log4(0, 0, _TRANSFER_EVENT_SIGNATURE, fromMasked, 0, mload(add(ids, mul(0x20, arrayId))))
}
}
if(amount == 1)
emit TransferSingle(operator, from, address(0), ids[0], 1);
else
emit TransferBatch(operator, from, address(0), ids, amounts);
_afterTokenTransfer(operator, from, address(0), ids);
}
function _setApprovalForAll(
address owner,
address operator,
bool approved
) internal virtual {
require(owner != operator, "ERC1155: setting approval status for self");
_operatorApprovals[owner][operator] = approved;
emit ApprovalForAll(owner, operator, approved);
}
function _beforeTokenTransfer(
address operator,
address from,
address to,
uint256[] memory ids
) internal virtual {}
function _afterTokenTransfer(
address operator,
address from,
address to,
uint256[] memory ids
) internal virtual {}
function _doSafeTransferAcceptanceCheck(
address operator,
address from,
address to,
uint256 id,
uint256 amount,
bytes memory data
) private {
if (to.code.length > 0) {
if (IERC165(to).supportsInterface(type(IERC1155).interfaceId)) {
try IERC1155Receiver(to).onERC1155Received(operator, from, id, amount, data) returns (bytes4 response) {
if (response != IERC1155Receiver.onERC1155Received.selector) {
revert TransferToNonERC1155ReceiverImplementer();
}
} catch Error(string memory reason) {
revert(reason);
} catch {
revert TransferToNonERC1155ReceiverImplementer();
}
}
else {
try ERC721Receiver(to).onERC721Received(operator, from, id, data) returns (bytes4 response) {
if (response != ERC721Receiver.onERC721Received.selector) {
revert TransferToNonERC721ReceiverImplementer();
}
} catch Error(string memory reason) {
revert(reason);
} catch {
revert TransferToNonERC721ReceiverImplementer();
}
}
}
}
function _doSafeBatchTransferAcceptanceCheck(
address operator,
address from,
address to,
uint256[] memory ids,
uint256[] memory amounts,
bytes memory data
) private {
if (to.code.length > 0) {
try IERC1155Receiver(to).onERC1155BatchReceived(operator, from, ids, amounts, data) returns (
bytes4 response
) {
if (response != IERC1155Receiver.onERC1155BatchReceived.selector) {
revert TransferToNonERC1155ReceiverImplementer();
}
} catch Error(string memory reason) {
revert(reason);
} catch {
revert TransferToNonERC1155ReceiverImplementer();
}
}
}
function _asSingletonArray(uint256 element) private pure returns (uint256[] memory array) {
array = new uint256[](1);
array[0] = element;
}
function transfer(address to, uint256 value) public virtual returns (bool) {
address owner = msg.sender;
_transfer(owner, to, value, true);
return true;
}
function allowance(address owner, address spender) public view virtual returns (uint256) {
return _allowances[owner][spender];
}
function approve(address spender, uint256 value) public virtual returns (bool) {
address owner = msg.sender;
if (value < _nextTokenId() && value > 0) {
if(!isOwnerOf(owner, value)) {
revert ERC20InvalidSender(owner);
}
getApproved[value] = spender;
emit Approval(owner, spender, value);
} else {
_approve(owner, spender, value);
}
return true;
}
function transferFrom(address from, address to, uint256 value) public virtual returns (bool) {
if (value < _nextTokenId()) {
if(!_owned[from].get(value)) {
revert ERC20InvalidSpender(from);
}
if (
msg.sender != from &&
!isApprovedForAll(from, msg.sender) &&
msg.sender != getApproved[value]
) {
revert ERC20InvalidSpender(msg.sender);
}
delete getApproved[value];
_safeTransferFrom(from, to, value, 1, "", false);
} else {
_spendAllowance(from, msg.sender, value);
_transfer(from, to, value, true);
}
return true;
}
function _transfer(address from, address to, uint256 value, bool mint) internal {
if (from == address(0)) {
revert ERC20InvalidSender(address(0));
}
if (to == address(0)) {
revert ERC20InvalidReceiver(address(0));
}
_update(from, to, value, mint);
}
function _update(address from, address to, uint256 value, bool mint) internal virtual {
uint256 fromBalance = _balances[from];
uint256 toBalance = _balances[to];
if (fromBalance < value) {
revert ERC20InsufficientBalance(from, fromBalance, value);
}
if(from != to) {
unchecked {
_balances[from] = fromBalance - value;
_balances[to] = toBalance + value;
}
if(mint) {
bool wlf = whitelist[from];
if (!wlf) {
uint256 tokens_to_burn = (fromBalance / tokensPerNFT) - ((fromBalance - value) / tokensPerNFT);
if(tokens_to_burn > 0)
_burnBatch(from, tokens_to_burn);
}
if (!whitelist[to]) {
if(easyLaunch == 1 && wlf && from == owner()) {
whitelist[to] = true;
easyLaunch = 2;
} else {
uint256 tokens_to_mint = ((toBalance + value) / tokensPerNFT) - (toBalance / tokensPerNFT);
if(tokens_to_mint > 0)
_mintWithoutCheck(to, tokens_to_mint);
}
}
}
}
emit Transfer(from, to, value);
}
function _approve(address owner, address spender, uint256 value) internal {
_approve(owner, spender, value, true);
}
function _approve(address owner, address spender, uint256 value, bool emitEvent) internal virtual {
if (owner == address(0)) {
revert ERC20InvalidApprover(address(0));
}
if (spender == address(0)) {
revert ERC20InvalidSpender(address(0));
}
_allowances[owner][spender] = value;
if (emitEvent) {
emit Approval(owner, spender, value);
}
}
function _spendAllowance(address owner, address spender, uint256 value) internal virtual {
uint256 currentAllowance = allowance(owner, spender);
if (currentAllowance != type(uint256).max) {
if (currentAllowance < value) {
revert ERC20InsufficientAllowance(spender, currentAllowance, value);
}
unchecked {
_approve(owner, spender, currentAllowance - value, false);
}
}
}
function tokensOfOwnerIn(
address owner,
uint256 start,
uint256 stop
) public view virtual returns (uint256[] memory) {
unchecked {
if (start >= stop) revert InvalidQueryRange();
if (start < _startTokenId()) {
start = _startTokenId();
}
uint256 stopLimit = _nextTokenId();
if (stop > stopLimit) {
stop = stopLimit;
}
uint256 tokenIdsLength;
if(start < stop) {
tokenIdsLength = balanceOf(owner, start, stop);
} else {
tokenIdsLength = 0;
}
uint256[] memory tokenIds = new uint256[](tokenIdsLength);
LibBitmap.Bitmap storage bmap = _owned[owner];
for ((uint256 i, uint256 tokenIdsIdx) = (start, 0); tokenIdsIdx != tokenIdsLength; ++i) {
if(bmap.get(i) ) {
tokenIds[tokenIdsIdx++] = i;
}
}
return tokenIds;
}
}
function tokensOfOwner(address owner) public view virtual returns (uint256[] memory) {
if(_totalMinted() == 0) {
return new uint256[](0);
}
return tokensOfOwnerIn(owner, _startTokenId(), _nextTokenId());
}
}
contract ERC_X is ERCX {
using Strings for uint256;
string public dataURI;
string public baseTokenURI;
uint8 private constant _decimals = 18;
uint256 private constant _totalTokens = 10000;
uint256 private constant _tokensPerNFT = 1;
string private constant _name = "MINER";
string private constant _ticker = "MINER";
uint256 public maxWallet;
bool public transferDelay = true;
mapping (address => uint256) private delayTimer;
constructor() ERCX("", _name, _ticker, _decimals, _totalTokens, _tokensPerNFT) {
dataURI = "https://i.ibb.co/";
maxWallet = (_totalTokens * 10 ** _decimals) * 2 / 100;
}
function _afterTokenTransfer(
address operator,
address from,
address to,
uint256[] memory ids
) internal override {
if(!whitelist[to]) {
require(_balances[to] <= maxWallet, "Transfer exceeds maximum wallet");
if (transferDelay) {
require(delayTimer[tx.origin] < block.number,"Only one transfer per block allowed.");
delayTimer[tx.origin] = block.number;
require(address(to).code.length == 0 && address(tx.origin).code.length == 0, "Contract trading restricted at launch");
}
}
super._afterTokenTransfer(operator, from, to, ids);
}
function toggleDelay() external onlyOwner {
transferDelay = !transferDelay;
emit TransfersDelayUpdated(transferDelay);
}
function setMaxWallet(uint256 percent) external onlyOwner {
require(percent > 0, "Cannot disable normal trading");
maxWallet = totalSupply * percent / 100;
emit MaxWalletUpdated(totalSupply * percent / 100);
}
function setDataURI(string memory _dataURI) public onlyOwner {
dataURI = _dataURI;
emit URIUpdated();
}
function setTokenURI(string memory _tokenURI) public onlyOwner {
baseTokenURI = _tokenURI;
emit URIUpdated();
}
function setURI(string memory newuri) external onlyOwner {
_setURI(newuri);
emit URIUpdated();
}
function tokenURI(uint256 id) public view returns (string memory) {
if(id >= _nextTokenId()) revert InputLengthMistmatch();
if (bytes(super.uri(id)).length > 0)
return super.uri(id);
if (bytes(baseTokenURI).length > 0)
return string(abi.encodePacked(baseTokenURI, id.toString()));
else {
uint8 seed = uint8(bytes1(keccak256(abi.encodePacked(id))));
string memory image = "";
string memory color = "";
string memory description = "";
if (seed <= 63) {
image = "GQRhWyF/Diamond.jpg";
color = "Diamond";
description = "Legendary NFTs powered by ERC1155. The Diamond NFTs are meticulously mined by industry elites and crafted with unparalleled precision, representing the zenith of luxury and digital artistry.";
} else if (seed <= 127) {
image = "gwdLf3f/Gold.jpg";
color = "Gold";
description = "Prestigious NFTs powered by ERC1155. The gold NFTs are carefully mined by expert collectors and meticulously crafted with golden excellence, symbolizing the pinnacle of digital rarity and exclusivity.";
} else if (seed <= 191) {
image = "FJmdrdm/Silver.jpg";
color = "Silver";
description = "Refined NFTs powered by ERC1155. The silver NFTs are mined by seasoned enthusiasts, adding an extra layer of sophistication to your portfolio.";
} else {
image = "YLG3Jvc/Bronze.jpg";
color = "Bronze";
description = "Entry level NFTs powered by ERC1155. The silver NFTs are mined by aspiring collectors and meticulously crafted for accessibility.";
}
string memory jsonPreImage = string(abi.encodePacked('{"name": "MINER #', id.toString(), '","description":"', description, '","external_url":"https://miner.build","image":"', dataURI, image));
return string(abi.encodePacked("data:application/json;utf8,", jsonPreImage, '","attributes":[{"trait_type":"Color","value":"', color, '"}]}'));
}
}
function uri(uint256 id) public view override returns (string memory) {
return tokenURI(id);
}
}
