ERC-721
Overview
Max Total Supply
581 VZ
Holders
220
Market
Volume (24H)
N/A
Min Price (24H)
N/A
Max Price (24H)
N/A
Other Info
Token Contract
Balance
100 VZLoading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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Contract Name:
Voyagerz
Compiler Version
v0.8.7+commit.e28d00a7
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// // @title Voyagerz NFT -- Mystery Labs / Danooka // SPDX-License-Identifier: MIT // pragma solidity >=0.8.7; import "@openzeppelin/contracts/access/Ownable.sol"; import "@openzeppelin/contracts/security/ReentrancyGuard.sol"; import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol"; interface IN is IERC721Enumerable, IERC721Metadata { function getFirst(uint256 tokenId) external view returns (uint256); function getSecond(uint256 tokenId) external view returns (uint256); function getThird(uint256 tokenId) external view returns (uint256); function getFourth(uint256 tokenId) external view returns (uint256); function getFifth(uint256 tokenId) external view returns (uint256); function getSixth(uint256 tokenId) external view returns (uint256); function getSeventh(uint256 tokenId) external view returns (uint256); function getEight(uint256 tokenId) external view returns (uint256); } interface ISpacetime is IERC721Enumerable { function withdraw(address payable _owner) external view; function reserveSpacetimes(address _to, uint256 _reserveAmount) external view; function setBaseURI(string memory baseURI) external view; function flipSaleState() external view; function tokensOfOwner(address _owner) external view returns(uint256[] memory ); function setSpacetimeName(uint256 _tokenId, string calldata _currName) external view; function viewSpacetimeName(uint _tokenId) external view returns(string memory); function mintSpacetime(uint _numberOfTokens) external; } contract Voyagerz is ERC721Enumerable, ReentrancyGuard, Ownable { using Strings for uint256; uint256 public constant MAX_MULTI_MINT_AMOUNT = 10; uint256 public constant MAX_ADDRESS_HISTORY = 40; uint256 public constant MAX_MINT_COUNT = 1500; uint256 private constant MAX_RADIUS = 170; uint256 private constant MIN_RADIUS = 40; uint256 private constant VD_MOON = 100; // Dependent contracts IN public immutable n; IERC721 public immutable ribonzContract; ISpacetime public immutable spacetimeContract; uint256 public immutable maxTotalSupply; uint256 public mintPrice = 125000000000000000; uint256 public mintPriceSpecialOfferForRZHolders = 0; mapping(uint256 => uint256) public n_sum_first; mapping(uint256 => bool) public stats_disable; mapping(uint256 => uint256) public image_seed; mapping(uint256 => uint256) public voyage_count; mapping(uint256 => string[]) public address_history; // RIBONZ:Genesis + Spacetime holders get to 'consume' an ST mint slot corresponding // To their owned token for the special offer uint256[1000] spaceTimeMintSlots; bool public saleIsActive = true; constructor() ERC721("VOYAGERZ", "VZ") { n = IN(address(0x05a46f1E545526FB803FF974C790aCeA34D1f2D6)); ribonzContract = IERC721(address(0xaa44dD92BC64BF8E700bb515a9Bf95547b413E4e)); spacetimeContract = ISpacetime(address(0xc0B1d8c41eF69a72a41Ba36A248C76aFeea30A0C)); maxTotalSupply = MAX_MINT_COUNT; } // // OWNER ONLY Routines // function flipSaleState() public onlyOwner { saleIsActive = !saleIsActive; } function withdrawAll() external onlyOwner { require(msg.sender == owner(), "only owner!"); payable(owner()).transfer(address(this).balance); } function updateMintPrice(uint256 newPrice) external onlyOwner { require(msg.sender == owner(), "only owner!"); mintPrice = newPrice; } function updateSpecialOfferMintPrice(uint256 newPrice) external onlyOwner { require(msg.sender == owner(), "only owner!"); mintPriceSpecialOfferForRZHolders = newPrice; } function clearStatsDisplay(uint256 tokenId) public { address owner = ownerOf(tokenId); require(msg.sender == owner, "not the owner"); stats_disable[tokenId] = true; } function tokensOfOwner(address _owner) external view returns (uint256[] memory) { uint256 tokenCount = balanceOf(_owner); if (tokenCount == 0) { // Return an empty array return new uint256[](0); } else { uint256[] memory result = new uint256[](tokenCount); uint256 index; for (index = 0; index < tokenCount; index++) { result[index] = tokenOfOwnerByIndex(_owner, index); } return result; } } function addrToString(address account, uint256 limit) internal pure returns (string memory) { return internalToString(abi.encodePacked(account), limit); } function internalToString(bytes memory data, uint256 limit) internal pure returns (string memory) { bytes memory alphabet = "0123456789abcdef"; uint256 end = data.length; if (limit < end) { end = limit; } bytes memory str = new bytes(2 + end * 2); str[0] = "0"; str[1] = "x"; for (uint256 i = 0; i < end; i++) { str[2 + i * 2] = alphabet[uint256(uint8(data[i] >> 4))]; str[3 + i * 2] = alphabet[uint256(uint8(data[i] & 0x0f))]; } return string(str); } function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT license // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol 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); } // // Does state updates at mint time and on every transfer // function updateVoyagerState(address to, uint256 cvMintIndex) private { uint256 n_tokens = 0; // Query any n's we hold n_tokens = n.balanceOf(to); uint256 new_voyage_count = voyage_count[cvMintIndex] + 1; string memory trunc_addr = addrToString(to, 3); // Track in the circular ring buffer if (new_voyage_count <= MAX_ADDRESS_HISTORY) { address_history[cvMintIndex].push(trunc_addr); } else { uint256 write_idx = new_voyage_count % MAX_ADDRESS_HISTORY; address_history[cvMintIndex][write_idx] = trunc_addr; } // Accumulate totals of the N's taking the firs token we find if (n_tokens > 0) { uint256 n_id = (n.tokenOfOwnerByIndex(to, 0)); uint256 n_first = n.getFirst(n_id); n_sum_first[cvMintIndex] += n_first; } voyage_count[cvMintIndex] = new_voyage_count; } function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual override { super._beforeTokenTransfer(from, to, tokenId); updateVoyagerState(to, tokenId); } // RZ Mint Slots function availableRZMintSlots() public view returns (uint256) { uint256 availableMintSlots = 0; if (ribonzContract.balanceOf(msg.sender) == 0) { // If not holding RIBONZ genesis can't get an RZ mint slot return 0; } uint256[] memory stTokensOfOwner = spacetimeContract.tokensOfOwner(msg.sender); for (uint256 i= 0; i<stTokensOfOwner.length; i++) { if (spaceTimeMintSlots[stTokensOfOwner[i]] == 0) { availableMintSlots++; } } return availableMintSlots; } // Defining a function to generate // a random number function randSeed(uint256 tokenId, uint256 modulus) internal view returns (uint256) { return uint256(keccak256(abi.encodePacked(msg.sender, block.timestamp, block.difficulty, tokenId, n_sum_first[tokenId]))) % modulus; } function mintVoyagerzInternal(uint256 num_to_mint, uint256 curMintPrice) internal { require(msg.value >= curMintPrice * num_to_mint, "Didn't pass in enough funds!"); require(saleIsActive, "sale not active at this time!"); require((totalSupply() + num_to_mint) <= MAX_MINT_COUNT, "Minting would exceed supply"); require(num_to_mint <= MAX_MULTI_MINT_AMOUNT, "Max mint at a time exceeded!"); for (uint256 i = 0; i < num_to_mint; i++) { uint256 mintIndex = totalSupply(); if (totalSupply() < maxTotalSupply) { _safeMint(msg.sender, mintIndex); // Store the seed for eternity -- it will be used to deterministically generate the image image_seed[mintIndex] = randSeed(mintIndex, 13999234923493293432397); } } } /** * @notice Allow anyone to mint a token with the supply id if this pass is unrestricted. * n token holders can use this function without using the n token holders allowance, * this is useful when the allowance is fully utilized. * @param num_to_mint num to mint */ function mintVoyagerz(uint256 num_to_mint) public payable virtual nonReentrant { mintVoyagerzInternal(num_to_mint, mintPrice); } // // Mint a voygagerz with special promo for RIBONZ Genesis + Spacetime holders // function mintVoyagerzWithRZ(uint256 num_to_mint) public payable virtual nonReentrant { // Precondition checks here uint256 availableSlots = availableRZMintSlots(); require(availableSlots >= num_to_mint, "Need to hold RIBONZ: Genesis and more RIBONZ: Spacetime than mint count"); // Each special offer mint 'consumes' a spacetime special offer slot uint256[] memory stTokensOfOwner = spacetimeContract.tokensOfOwner(msg.sender); // Do the mint at discount price! mintVoyagerzInternal(num_to_mint, mintPriceSpecialOfferForRZHolders); uint256 mintSlotsToConsume = num_to_mint; // // Consume the mint slots // for (uint256 i= 0; i<stTokensOfOwner.length; i++) { // Eat up a slot if (mintSlotsToConsume > 0 && (spaceTimeMintSlots[stTokensOfOwner[i]] == 0)) { spaceTimeMintSlots[stTokensOfOwner[i]] = 1; mintSlotsToConsume--; } } } /** * @notice Calculate the currently available number of open mints * @return Open mint available */ function openMintsAvailable() public view returns (uint256) { uint256 maxOpenMints = maxTotalSupply ; uint256 currentOpenMints = totalSupply(); return maxOpenMints - currentOpenMints; } function min(uint256 a, uint256 b) internal pure returns (uint256) { return a >= b ? b : a; } function max(uint256 a, uint256 b) internal pure returns (uint256) { return a >= b ? a : b; } struct RenderParams { uint256 hue_base; uint256 hue_sat; uint256 hue_delta; uint256 hue_l; uint256 hue_l_delta; uint256 stop_offset1; string bgcol; uint bgindex; uint voyage_distance; } function getRenderParams(uint256 tokenId) internal view returns (RenderParams memory) { RenderParams memory rp; // 32 bytes of seed uint256 seed = image_seed[tokenId]; // Uncapped rp.voyage_distance = voyage_count[tokenId] + n_sum_first[tokenId]; rp.hue_base = seed & 0xFF; // 0-255 seed = seed >> 8; rp.hue_delta = ((seed & 0xFF) % 33) + 3; //(3, 36) seed = seed >> 8; rp.hue_sat = ((seed & 0xFF) % 60) + 30; //(30, 90) seed = seed >> 8; rp.hue_l = ((seed & 0xFF) % 20) + 30; //(30, 50) seed = seed >> 8; rp.hue_l_delta = ((seed & 0xFF) % 45) + 5; //(5, 50) seed = seed >> 8; rp.stop_offset1 = ((seed & 0xFF) % 10) + 15; //(15, 25) seed = seed >> 8; if ((seed & 0xFF) > 50) { // >50/255 = 0.8% chance of black seed = seed >> 8; rp.bgcol = "hsl(0,0,0)"; rp.bgindex = 0; } else { seed = seed >> 8; if (seed & 0x3 == 0) { rp.bgcol = "#F59738"; rp.bgindex = 1; } else if (seed & 0x3 == 1) { rp.bgcol = "#E5FCC2"; rp.bgindex = 2; } else if (seed & 0x3 == 2) { rp.bgcol = "#DCEDC2"; rp.bgindex = 3; } else { rp.bgcol = "#ACCBFF"; rp.bgindex = 4; } } return rp; } function getSvg(uint256 tokenId) internal view returns (string memory, RenderParams memory) { // // Generate SVG // RenderParams memory rp = getRenderParams(tokenId); string memory buf; buf = string( abi.encodePacked( '<svg xmlns="http://www.w3.org/2000/svg" preserveAspectRatio="xMinYMin meet" viewBox="0 0 350 350">' "<style>" ".base {" "fill : hsl(", toString((rp.hue_base)), ",", toString(rp.hue_sat), "%, 30%);" "font-family: monospace;" "font-size: 6px;" "}</style>" "<defs>" '<radialGradient id="xgro">' '<stop offset="0%" stop-color="hsl(0,0,0,0)" />' '<stop offset="5%" stop-color="hsl(', toString(rp.hue_base), ',77%, 26%)" />' ) ); { // Scope for stack too deep buf = string( abi.encodePacked( buf, '<stop offset="', toString(rp.stop_offset1), '%" stop-color="hsl(', toString(((rp.hue_base + rp.hue_delta)) % 255), ",", toString(rp.hue_sat), '%, 46%)" />' ) ); } buf = string(abi.encodePacked( buf, '<stop offset="35%" stop-color="hsl(', toString((rp.hue_base + rp.hue_delta * 2) % 255), ",", toString((rp.hue_sat)), "%,", toString((rp.hue_l + rp.hue_l_delta * 0) % 47), '%)" />')); buf = string( abi.encodePacked( buf, '<stop offset="50%" stop-color="hsl(', toString((rp.hue_base + rp.hue_delta * 2) % 255), ",", toString((rp.hue_sat)), "%,", toString((rp.hue_l + rp.hue_l_delta * 1) % 57), '%)" />' ) ); buf = string( abi.encodePacked( buf, '<stop offset="60%" stop-color="hsl(', toString((rp.hue_base + rp.hue_delta * 3) % 255), ",", toString((rp.hue_sat)), "%,", toString((rp.hue_l + rp.hue_l_delta * 2) % 97), '%)" />' ) ); buf = string( abi.encodePacked( buf, '<stop offset="70%" stop-color="hsl(', toString((rp.hue_base + rp.hue_delta * 3) % 255), ",", toString((rp.hue_sat)), "%,", toString((rp.hue_l + rp.hue_l_delta * 3) % 67), '%)" />' ) ); buf = string( abi.encodePacked(buf, '<stop offset="100%" stop-color="', rp.bgcol, '" stop-opacity="0"/></radialGradient>') ); { uint256 radius; { // voyage_distance is uncapped // map to capped distance - MAX_RADIUS uint256 capped_distance = min(rp.voyage_distance, MAX_RADIUS); // remap to radius with deceleration as we get closer to goal -- 5 is the h constant radius = MIN_RADIUS+(((MAX_RADIUS-MIN_RADIUS)*capped_distance)/((capped_distance+5))); } uint256 circle_radius = (radius * 13) / 10; string memory s_r = toString(radius); string memory s_2r = toString(radius * 2); string memory s_cx; { // Handle negative s_cx = (175 > radius) ? toString(175 - radius) : string(abi.encodePacked('-', toString(radius - 175))); } buf = string(abi.encodePacked(buf, '<path id="textpath" d="M ', s_cx, " 175")); buf = string(abi.encodePacked(buf, " a ", s_r, ",", s_r, ",", "0 1,1,", s_2r, ", 0")); buf = string(abi.encodePacked(buf, " a ", s_r, ",", s_r, ",", "0 1,1,-", s_2r, ", 0")); buf = string(abi.encodePacked(buf, '" stroke="hsl(255,50%,50%)" fill="none"/>' "</defs>" '<rect width="100%" height="100%" fill="', rp.bgcol, '"></rect>' '<circle cx="175" cy="175" r="', toString(circle_radius))); if (rp.voyage_distance < VD_MOON) { buf = string(abi.encodePacked(buf, '" fill="url(#xgro)" />')); } else { // End state! buf = string(abi.encodePacked(buf, '" fill="url(#xgro)" >', ' <animate attributeName="r" values="170; 175; 196; 177; 170" keyTimes="0; 0.1; 0.3; 0.7; 1.0" dur="8s" repeatCount="indefinite"></animate></circle>')); } } // Owner can turn of this cool element if they choose if (!stats_disable[tokenId]) { uint256 i; buf = string(abi.encodePacked(buf, '<text class="base" ><textPath href="#textpath">')); for (i = 0; i < address_history[tokenId].length; i++) { buf = string(abi.encodePacked(buf, (address_history[tokenId][i]), " ")); } buf = string(abi.encodePacked(buf, "</textPath></text></svg>")); } return (buf, rp); } function tokenURI(uint256 tokenId) public virtual view override returns (string memory) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); (string memory svgBuf, RenderParams memory rp) = getSvg(tokenId); string memory voyage_layer = 'Tropo'; { if (rp.voyage_distance >= 100) { voyage_layer = 'Moon'; } else if (rp.voyage_distance >= 50) { voyage_layer = 'Space'; } else if (rp.voyage_distance >= 40) { voyage_layer = 'Exo'; } else if (rp.voyage_distance >= 30) { voyage_layer = 'Thermo'; } else if (rp.voyage_distance >= 20) { voyage_layer = 'Meso'; } else if (rp.voyage_distance >= 10) { voyage_layer = 'Strato'; } } // // Attributes // string memory metadata_attr = string( abi.encodePacked( 'attributes": [{"trait_type": "Voyage Distance", "value": ', toString(rp.voyage_distance), "},", '{"trait_type": "N Boost", "value": ', toString(n_sum_first[tokenId]), "},", '{"trait_type": "Voyage Phase", "value": "', voyage_layer, '"},', '{"trait_type": "Voyage#", "value": "', toString(rp.voyage_distance), '"},', '{"trait_type": "Background color#", "value": "', toString(rp.bgindex), '"}', "]" ) ); string memory json = Base64.encode( ( bytes( abi.encodePacked( '{"name": "VOYAGERZ #', toString(tokenId), '", "description": "VOYAGERZ is a fully on chain Generative Transfer Art Project.", "image": "data:image/svg+xml;base64,', Base64.encode(bytes(svgBuf)), '","', metadata_attr, "}" ) ) ) ); return string(abi.encodePacked("data:application/json;base64,", json)); } } // @title Base64 /// @author Brecht Devos - <[email protected]> /// @notice Provides a function for encoding some bytes in base64 library Base64 { string internal constant TABLE = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'; function encode(bytes memory data) internal pure returns (string memory) { if (data.length == 0) return ''; // load the table into memory string memory table = TABLE; // multiply by 4/3 rounded up uint256 encodedLen = 4 * ((data.length + 2) / 3); // add some extra buffer at the end required for the writing string memory result = new string(encodedLen + 32); assembly { // set the actual output length mstore(result, encodedLen) // prepare the lookup table let tablePtr := add(table, 1) // input ptr let dataPtr := data let endPtr := add(dataPtr, mload(data)) // result ptr, jump over length let resultPtr := add(result, 32) // run over the input, 3 bytes at a time for {} lt(dataPtr, endPtr) {} { dataPtr := add(dataPtr, 3) // read 3 bytes let input := mload(dataPtr) // write 4 characters mstore(resultPtr, shl(248, mload(add(tablePtr, and(shr(18, input), 0x3F))))) resultPtr := add(resultPtr, 1) mstore(resultPtr, shl(248, mload(add(tablePtr, and(shr(12, input), 0x3F))))) resultPtr := add(resultPtr, 1) mstore(resultPtr, shl(248, mload(add(tablePtr, and(shr( 6, input), 0x3F))))) resultPtr := add(resultPtr, 1) mstore(resultPtr, shl(248, mload(add(tablePtr, and( input, 0x3F))))) resultPtr := add(resultPtr, 1) } // padding with '=' switch mod(mload(data), 3) case 1 { mstore(sub(resultPtr, 2), shl(240, 0x3d3d)) } case 2 { mstore(sub(resultPtr, 1), shl(248, 0x3d)) } } return result; } }
// SPDX-License-Identifier: MIT 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 Hook that is called before any token transfer. This includes minting * and burning. * * 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, ``from``'s `tokenId` will be burned. * - `from` cannot be the zero address. * - `to` cannot be the zero address. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual override { super._beforeTokenTransfer(from, to, tokenId); 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 pragma solidity ^0.8.0; /** * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. */ abstract contract ReentrancyGuard { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; constructor() { _status = _NOT_ENTERED; } /** * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and make it call a * `private` function that does the actual work. */ modifier nonReentrant() { // On the first call to nonReentrant, _notEntered will be true require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; _; // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } }
// SPDX-License-Identifier: MIT 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() { _setOwner(_msgSender()); } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _setOwner(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"); _setOwner(newOwner); } function _setOwner(address newOwner) private { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } }
// SPDX-License-Identifier: MIT 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 tokenId); /** * @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 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: balance query for the zero address"); return _balances[owner]; } /** * @dev See {IERC721-ownerOf}. */ function ownerOf(uint256 tokenId) public view virtual override returns (address) { address owner = _owners[tokenId]; require(owner != address(0), "ERC721: owner query for nonexistent token"); 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) { require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token"); 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 overriden 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 owner nor approved for all" ); _approve(to, tokenId); } /** * @dev See {IERC721-getApproved}. */ function getApproved(uint256 tokenId) public view virtual override returns (address) { require(_exists(tokenId), "ERC721: approved query for nonexistent token"); return _tokenApprovals[tokenId]; } /** * @dev See {IERC721-setApprovalForAll}. */ function setApprovalForAll(address operator, bool approved) public virtual override { require(operator != _msgSender(), "ERC721: approve to caller"); _operatorApprovals[_msgSender()][operator] = approved; emit ApprovalForAll(_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: transfer caller is not owner nor 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: transfer caller is not owner nor 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 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 _owners[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) { require(_exists(tokenId), "ERC721: operator query for nonexistent token"); address owner = ERC721.ownerOf(tokenId); return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, 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); _balances[to] += 1; _owners[tokenId] = to; emit Transfer(address(0), to, tokenId); } /** * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. */ function _burn(uint256 tokenId) internal virtual { address owner = ERC721.ownerOf(tokenId); _beforeTokenTransfer(owner, address(0), tokenId); // Clear approvals _approve(address(0), tokenId); _balances[owner] -= 1; delete _owners[tokenId]; emit Transfer(owner, address(0), tokenId); } /** * @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 of token that is not own"); require(to != address(0), "ERC721: transfer to the zero address"); _beforeTokenTransfer(from, to, tokenId); // Clear approvals from the previous owner _approve(address(0), tokenId); _balances[from] -= 1; _balances[to] += 1; _owners[tokenId] = to; emit Transfer(from, to, tokenId); } /** * @dev Approve `to` to operate on `tokenId` * * Emits a {Approval} event. */ function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721.ownerOf(tokenId), to, tokenId); } /** * @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 { assembly { revert(add(32, reason), mload(reason)) } } } } else { return true; } } /** * @dev Hook that is called before any token transfer. This includes minting * and burning. * * 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, ``from``'s `tokenId` will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 tokenId ) internal virtual {} }
// SPDX-License-Identifier: MIT 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 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`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. */ function approve(address to, uint256 tokenId) external; /** * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function getApproved(uint256 tokenId) external view returns (address operator); /** * @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 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); /** * @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; }
// SPDX-License-Identifier: MIT 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 pragma solidity ^0.8.0; /** * @dev String operations. */ library Strings { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol 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); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ 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); } /** * @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] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; /** * @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 * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }
// SPDX-License-Identifier: MIT 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 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 `IERC721.onERC721Received.selector`. */ function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); }
// SPDX-License-Identifier: MIT 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); }
{ "optimizer": { "enabled": true, "runs": 200 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "abi" ] } } }
Contract Security Audit
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IN","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"n_sum_first","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":"openMintsAvailable","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"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":[],"name":"ribonzContract","outputs":[{"internalType":"contract IERC721","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"},{"internalType":"bytes","name":"_data","type":"bytes"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"saleIsActive","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":[],"name":"spacetimeContract","outputs":[{"internalType":"contract ISpacetime","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"stats_disable","outputs":[{"internalType":"bool","name":"","type":"bool"}],"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":[{"internalType":"uint256","name":"index","type":"uint256"}],"name":"tokenByIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"uint256","name":"index","type":"uint256"}],"name":"tokenOfOwnerByIndex","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_owner","type":"address"}],"name":"tokensOfOwner","outputs":[{"internalType":"uint256[]","name":"","type":"uint256[]"}],"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":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"newPrice","type":"uint256"}],"name":"updateMintPrice","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"newPrice","type":"uint256"}],"name":"updateSpecialOfferMintPrice","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"voyage_count","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"withdrawAll","outputs":[],"stateMutability":"nonpayable","type":"function"}]
Contract Creation Code
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