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ERC-721
Overview
Max Total Supply
0 $DDD
Holders
430
Market
Volume (24H)
N/A
Min Price (24H)
N/A
Max Price (24H)
N/A
Other Info
Token Contract
Balance
1 $DDDLoading...
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# | Exchange | Pair | Price | 24H Volume | % Volume |
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Contract Name:
DenDekaDenOmikuji
Compiler Version
v0.8.17+commit.8df45f5f
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: GPL-3.0-or-later pragma solidity ^0.8.17; /* * @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ * @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ * @@@...........................................................................@@ * @@@...........................................................................@@ * @@@@........................................................................*@@@ * @@@@@......................................................................@@@@@ * @@@@@@#...................................................................@@@@@@ * @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ * @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ * @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ * @@@@@@@@@@@@*...............@@@@@@@@............@@@@@@@@%...........@@@@@@@@@@@@ * @@@@@@@@@@@@@..............%@@@@@@@.............@@@@@@@,............@@@@@@@@@@@@ * @@@@@@@@@@@@@@............@@@@@@@&............/@@@@@@@............/@@@@@@@@@@@@@ * @@@@@@@@@@@@@@@..........@@@@@@@*............@@@@@@@@............*@@@@@@@@@@@@@@ * @@@@@@@@@@@@@@@@.......,@@@@@@@.............@@@@@@@%............(@@@@@@@@@@@@@@@ * @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@.............@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ * @@@@@@@@@@@@@@@@@@@@@@@@@@@@@............/@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ * @@@@@@@@@@@@@@@@@@@@@@@@@@@@............@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ * @@@@@@@@@@@@@@@@@@@@@@@@@@%...............................,@@@@@@@@@@@@@@@@@@@@@ * @@@@@@@@@@@@@@@@@@@@@@@@@.................................@@@@@@@@@@@@@@@@@@@@@@ * @@@@@@@@@@@@@@@@@@@@@@@@.................................@@@@@@@@@@@@@@@@@@@@@@@ * @@@@@@@@@@@@@@@@@@@@@@@@@...............................@@@@@@@@@@@@@@@@@@@@@@@@ * @@@@@@@@@@@@@@@@@@@@@@@@@@.............................@@@@@@@@@@@@@@@@@@@@@@@@@ * @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@,............/@@@@@@@@@@@@@@@@@@@@@@@@@@ * @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@(............%@@@@@@@@@@@@@@@@@@@@@@@@@@@ * @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@.............@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ * @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@.............@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ * @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@............,@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ * @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@(............%@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ * @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@(...........@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ * @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@.........@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ * @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@#.......@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ * @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@.... @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ * @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@.@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ * @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ * @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ * @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ 電殿神伝 @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ * @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ DenDekaDen @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ * @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ * @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ Do you believe? @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ * @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ * @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ JD & BH @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ * @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ * @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ */ import '@openzeppelin/contracts/access/Ownable.sol'; import '@openzeppelin/contracts/token/ERC721/ERC721.sol'; import '@openzeppelin/contracts/utils/Base64.sol'; import '@openzeppelin/contracts/utils/Strings.sol'; import '@openzeppelin/contracts/utils/cryptography/MerkleProof.sol'; contract DenDekaDenOmikuji is Ownable, ERC721 { // Libraries using Strings for uint256; // For random attribute, use: // tokenId, timestamp, and donation amount struct TraitSeeds { uint256 timestamp; // how much was donated during mint -- used for better probabilities uint256 donationAmount; } // CONSTANTS uint8 constant NUM_CHARACTERS = 7; uint16 constant OMIKUJI_PER_CHARACTER = 108; // 0.07ETH is donation boost! // If you donate 0.07ETH or greater, your luck probabilities are boosted! uint256 constant DONATION_BOOST_THRESHOLD = 70000000000000000; /******* MINTING DATA *******/ // track omikuji minter per character uint8[NUM_CHARACTERS] ascendingCharacterMints; // need to track team mints too uint8[NUM_CHARACTERS] descendingCharacterMints; // track GODLY tokenId for each character // IMPORTANT: defaults to 0 so NO TOKEN should have id of 0 uint256[NUM_CHARACTERS] public godlyTokens; // storage of seeds for calculating traits mapping(uint256 /* tokenId */ => TraitSeeds) tokenTraitSeeds; // record ifa wallet has already minted a character mapping(address => mapping(uint8 /* characterId */ => uint256)) addressCharacterMints; // WHITELIST props bytes32 whitelistMerkleRoot; // JAPAN 2023-01-01 00:00:00 TIMESTAMP uint256 whitelistMintStartTime = 1672498800; // JAPAN 2023-01-01 07:30:00 TIMESTAMP uint256 mainMintStartTime = 1672525800; // whitelist mint records mapping(address /* user */ => bool) whitelistAddressMints; // team mint merkle root bytes32 teamMerkleRoot; // Team mints capped at 35 uint256 teamMintsRemaining = 35; /******* ATTRIBUTE PROBABILITIES *********/ // base attributes do not include "very good" uint8[] baseAttributeProbabilities = [0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3]; // special attribute probabilities includes "very good" uint8[] specialAttributeProbabilities = [0, 0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 4, 4, 4]; // Very good most likely, then great, then good -- godly boosted on mint uint8[] boostAttributeProbabilities = [2, 3, 3, 3, 3, 4, 4, 4]; // METADATA PROPS string _baseImgUri = "https://dendekaden.s3.ap-northeast-1.amazonaws.com/"; bool _imgUriLocked = false; string constant DESCRIPTION = 'Sacred lots drawn by the First Believers, and held by the most ardent Devotees of '; string constant EXTERNAL_URL = 'https://www.dendekaden.com/'; string[] fortuneCategories = [ '2. LOVE', '3. BENEFACTOR', '4. BUSINESS', '5. ACADEMICS', '6. DISPUTES', '7. TRAVEL', '8. HEALTH', '9. WISH' ]; string[] characterNames = [ // 吉祥天 'Megna', // 弁財天 'Bene', // 大黒天 'Yoa', // 恵比寿こひる 'Kohiru', // 毘沙門天 'Hisato', // 布袋 'Taylor', // 寿老人 'Momo' ]; string[][] fortuneValues = [ // LOVE [ // 告白しらく待て '\xe5\x91\x8a\xe7\x99\xbd\xe3\x81\x97\xe3\x81\xb0\xe3\x82\x89\xe3\x81\x8f\xe5\xbe\x85\xe3\x81\xa6', // 今叶わずとも縁あり '\xe4\xbb\x8a\xe5\x8f\xb6\xe3\x82\x8f\xe3\x81\x9a\xe3\x81\xa8\xe3\x82\x82\xe7\xb8\x81\xe3\x81\x82\xe3\x82\x8a', // 歳に囚われる必要なし '\xe6\xad\xb3\xe3\x81\xab\xe5\x9b\x9a\xe3\x82\x8f\xe3\x82\x8c\xe3\x82\x8b\xe5\xbf\x85\xe8\xa6\x81\xe3\x81\xaa\xe3\x81\x97', // 良い人既に近くに '\xe8\x89\xaf\xe3\x81\x84\xe4\xba\xba\xe6\x97\xa2\xe3\x81\xab\xe8\xbf\x91\xe3\x81\x8f\xe3\x81\xab' ], // BENEFACTOR [ // たよりなし '\xe3\x81\x9f\xe3\x82\x88\xe3\x82\x8a\xe3\x81\xaa\xe3\x81\x97', // 来るとも遅し 往きて利あり '\xe6\x9d\xa5\xe3\x82\x8b\xe3\x81\xa8\xe3\x82\x82\xe9\x81\x85\xe3\x81\x97\x20\xe5\xbe\x80\xe3\x81\x8d\xe3\x81\xa6\xe5\x88\xa9\xe3\x81\x82\xe3\x82\x8a', // 来る '\xe6\x9d\xa5\xe3\x82\x8b', // 来たる つれあり '\xe6\x9d\xa5\xe3\x81\x9f\xe3\x82\x8b\x20\xe3\x81\xa4\xe3\x82\x8c\xe3\x81\x82\xe3\x82\x8a' ], // BUSINESS [ // 堅実さを取り戻せ '\xe5\xa0\x85\xe5\xae\x9f\xe3\x81\x95\xe3\x82\x92\xe5\x8f\x96\xe3\x82\x8a\xe6\x88\xbb\xe3\x81\x9b', // 利益少し焦るな 後になれば益あり '\xe5\x88\xa9\xe7\x9b\x8a\xe5\xb0\x91\xe3\x81\x97\xe7\x84\xa6\xe3\x82\x8b\xe3\x81\xaa\xe3\x80\x80\xe5\xbe\x8c\xe3\x81\xab\xe3\x81\xaa\xe3\x82\x8c\xe3\x81\xb0\xe7\x9b\x8a\xe3\x81\x82\xe3\x82\x8a', // 利益たしかなり '\xe5\x88\xa9\xe7\x9b\x8a\xe3\x81\x9f\xe3\x81\x97\xe3\x81\x8b\xe3\x81\xaa\xe3\x82\x8a', // 十分幸福 '\xe5\x8d\x81\xe5\x88\x86\xe5\xb9\xb8\xe7\xa6\x8f' ], // ACADEMICS [ // 今回は諦め切り替えるべし '\xe4\xbb\x8a\xe5\x9b\x9e\xe3\x81\xaf\xe8\xab\xa6\xe3\x82\x81\xe5\x88\x87\xe3\x82\x8a\xe6\x9b\xbf\xe3\x81\x88\xe3\x82\x8b\xe3\x81\xb9\xe3\x81\x97', // 伸びる時努力せよ '\xe4\xbc\xb8\xe3\x81\xb3\xe3\x82\x8b\xe6\x99\x82\xe5\x8a\xaa\xe5\x8a\x9b\xe3\x81\x9b\xe3\x82\x88', // 努力しただけ力になる '\xe5\x8a\xaa\xe5\x8a\x9b\xe3\x81\x97\xe3\x81\x9f\xe3\x81\xa0\xe3\x81\x91\xe5\x8a\x9b\xe3\x81\xab\xe3\x81\xaa\xe3\x82\x8b', // 歩み遅くとも着実に実る '\xe6\xad\xa9\xe3\x81\xbf\xe9\x81\x85\xe3\x81\x8f\xe3\x81\xa8\xe3\x82\x82\xe7\x9d\x80\xe5\xae\x9f\xe3\x81\xab\xe5\xae\x9f\xe3\x82\x8b' ], // DISPUTES [ // 争いごと負けなり '\xe4\xba\x89\xe3\x81\x84\xe3\x81\x94\xe3\x81\xa8\xe8\xb2\xa0\xe3\x81\x91\xe3\x81\xaa\xe3\x82\x8a', // 勝ち退くが利 '\xe5\x8b\x9d\xe3\x81\xa1\xe9\x80\x80\xe3\x81\x8f\xe3\x81\x8c\xe5\x88\xa9', // よろしさわぐな '\xe3\x82\x88\xe3\x82\x8d\xe3\x81\x97\xe3\x81\x95\xe3\x82\x8f\xe3\x81\x90\xe3\x81\xaa', // 心和やかにして吉 '\xe5\xbf\x83\xe5\x92\x8c\xe3\x82\x84\xe3\x81\x8b\xe3\x81\xab\xe3\x81\x97\xe3\x81\xa6\xe5\x90\x89' ], // TRAVEL [ // かえりはほど知れず '\xe3\x81\x8b\xe3\x81\x88\xe3\x82\x8a\xe3\x81\xaf\xe3\x81\xbb\xe3\x81\xa9\xe7\x9f\xa5\xe3\x82\x8c\xe3\x81\x9a', // して良いが無理避けよ '\xe3\x81\x97\xe3\x81\xa6\xe8\x89\xaf\xe3\x81\x84\xe3\x81\x8c\xe7\x84\xa1\xe7\x90\x86\xe9\x81\xbf\xe3\x81\x91\xe3\x82\x88', // 遠くはいかぬが利 '\xe9\x81\xa0\xe3\x81\x8f\xe3\x81\xaf\xe3\x81\x84\xe3\x81\x8b\xe3\x81\xac\xe3\x81\x8c\xe5\x88\xa9', // 快調に進む '\xe5\xbf\xab\xe8\xaa\xbf\xe3\x81\xab\xe9\x80\xb2\xe3\x82\x80' ], // HEALTH [ // 医師はしっかり選べ '\xe5\x8c\xbb\xe5\xb8\xab\xe3\x81\xaf\xe3\x81\x97\xe3\x81\xa3\xe3\x81\x8b\xe3\x82\x8a\xe9\x81\xb8\xe3\x81\xb9', // 早く医師に診せろ '\xe6\x97\xa9\xe3\x81\x8f\xe5\x8c\xbb\xe5\xb8\xab\xe3\x81\xab\xe8\xa8\xba\xe3\x81\x9b\xe3\x82\x8d', // 異変感じたら休め '\xe7\x95\xb0\xe5\xa4\x89\xe6\x84\x9f\xe3\x81\x98\xe3\x81\x9f\xe3\x82\x89\xe4\xbc\x91\xe3\x82\x81', // 心穏やかに過ごせ 快方に向かう '\xe5\xbf\x83\xe7\xa9\x8f\xe3\x82\x84\xe3\x81\x8b\xe3\x81\xab\xe9\x81\x8e\xe3\x81\x94\xe3\x81\x9b\x20\xe5\xbf\xab\xe6\x96\xb9\xe3\x81\xab\xe5\x90\x91\xe3\x81\x8b\xe3\x81\x86' ], // WISH [ // 障りあり '\xe9\x9a\x9c\xe3\x82\x8a\xe3\x81\x82\xe3\x82\x8a', // 焦るな機は来る '\xe7\x84\xa6\xe3\x82\x8b\xe3\x81\xaa\xe6\xa9\x9f\xe3\x81\xaf\xe6\x9d\xa5\xe3\x82\x8b', // 多く望まなければ叶う '\xe5\xa4\x9a\xe3\x81\x8f\xe6\x9c\x9b\xe3\x81\xbe\xe3\x81\xaa\xe3\x81\x91\xe3\x82\x8c\xe3\x81\xb0\xe5\x8f\xb6\xe3\x81\x86', // 力合わせればきっと叶う '\xe5\x8a\x9b\xe5\x90\x88\xe3\x82\x8f\xe3\x81\x9b\xe3\x82\x8c\xe3\x81\xb0\xe3\x81\x8d\xe3\x81\xa3\xe3\x81\xa8\xe5\x8f\xb6\xe3\x81\x86' ] ]; string[][] specialFortuneValues = [ // LOVE [ // 告白しばらく待て '\xe5\x91\x8a\xe7\x99\xbd\xe3\x81\x97\xe3\x81\xb0\xe3\x82\x89\xe3\x81\x8f\xe5\xbe\x85\xe3\x81\xa6', // 今叶わずとも縁あり '\xe4\xbb\x8a\xe5\x8f\xb6\xe3\x82\x8f\xe3\x81\x9a\xe3\x81\xa8\xe3\x82\x82\xe7\xb8\x81\xe3\x81\x82\xe3\x82\x8a', // 歳に囚われる必要なし '\xe6\xad\xb3\xe3\x81\xab\xe5\x9b\x9a\xe3\x82\x8f\xe3\x82\x8c\xe3\x82\x8b\xe5\xbf\x85\xe8\xa6\x81\xe3\x81\xaa\xe3\x81\x97', // 良い人既に近くに '\xe8\x89\xaf\xe3\x81\x84\xe4\xba\xba\xe6\x97\xa2\xe3\x81\xab\xe8\xbf\x91\xe3\x81\x8f\xe3\x81\xab', // 迷うことなかれ 心に決めた人が最上 '\xe8\xbf\xb7\xe3\x81\x86\xe3\x81\x93\xe3\x81\xa8\xe3\x81\xaa\xe3\x81\x8b\xe3\x82\x8c\x20\xe5\xbf\x83\xe3\x81\xab\xe6\xb1\xba\xe3\x82\x81\xe3\x81\x9f\xe4\xba\xba\xe3\x81\x8c\xe6\x9c\x80\xe4\xb8\x8a', // 愛せよ 全て叶う '\xe6\x84\x9b\xe3\x81\x9b\xe3\x82\x88\x20\xe5\x85\xa8\xe3\x81\xa6\xe5\x8f\xb6\xe3\x81\x86' ], // BENEFACTOR [ // たよりなし '\xe3\x81\x9f\xe3\x82\x88\xe3\x82\x8a\xe3\x81\xaa\xe3\x81\x97', // 来るとも遅し 往きて利あり '\xe6\x9d\xa5\xe3\x82\x8b\xe3\x81\xa8\xe3\x82\x82\xe9\x81\x85\xe3\x81\x97\x20\xe5\xbe\x80\xe3\x81\x8d\xe3\x81\xa6\xe5\x88\xa9\xe3\x81\x82\xe3\x82\x8a', // 来る '\xe6\x9d\xa5\xe3\x82\x8b', // 来たる つれあり '\xe6\x9d\xa5\xe3\x81\x9f\xe3\x82\x8b\x20\xe3\x81\xa4\xe3\x82\x8c\xe3\x81\x82\xe3\x82\x8a', // 来る 驚くことあり '\xe6\x9d\xa5\xe3\x82\x8b\x20\xe9\xa9\x9a\xe3\x81\x8f\xe3\x81\x93\xe3\x81\xa8\xe3\x81\x82\xe3\x82\x8a', // 来て喜びの奏こだまする '\xe6\x9d\xa5\xe3\x81\xa6\xe5\x96\x9c\xe3\x81\xb3\xe3\x81\xae\xe5\xa5\x8f\xe3\x81\x93\xe3\x81\xa0\xe3\x81\xbe\xe3\x81\x99\xe3\x82\x8b' ], // BUSINESS [ // 堅実さを取り戻せ '\xe5\xa0\x85\xe5\xae\x9f\xe3\x81\x95\xe3\x82\x92\xe5\x8f\x96\xe3\x82\x8a\xe6\x88\xbb\xe3\x81\x9b', // 利益少し焦るな 後になれば益あり '\xe5\x88\xa9\xe7\x9b\x8a\xe5\xb0\x91\xe3\x81\x97\xe7\x84\xa6\xe3\x82\x8b\xe3\x81\xaa\xe3\x80\x80\xe5\xbe\x8c\xe3\x81\xab\xe3\x81\xaa\xe3\x82\x8c\xe3\x81\xb0\xe7\x9b\x8a\xe3\x81\x82\xe3\x82\x8a', // 利益たしかなり '\xe5\x88\xa9\xe7\x9b\x8a\xe3\x81\x9f\xe3\x81\x97\xe3\x81\x8b\xe3\x81\xaa\xe3\x82\x8a', // 十分幸福 '\xe5\x8d\x81\xe5\x88\x86\xe5\xb9\xb8\xe7\xa6\x8f', // 御神徳により隆昌する '\xe5\xbe\xa1\xe7\xa5\x9e\xe5\xbe\xb3\xe3\x81\xab\xe3\x82\x88\xe3\x82\x8a\xe9\x9a\x86\xe6\x98\x8c\xe3\x81\x99\xe3\x82\x8b', // 夜動かばおおいに利あり '\xe5\xa4\x9c\xe5\x8b\x95\xe3\x81\x8b\xe3\x81\xb0\xe3\x81\x8a\xe3\x81\x8a\xe3\x81\x84\xe3\x81\xab\xe5\x88\xa9\xe3\x81\x82\xe3\x82\x8a' ], // ACADEMICS [ // 今回は諦め切り替えるべし '\xe4\xbb\x8a\xe5\x9b\x9e\xe3\x81\xaf\xe8\xab\xa6\xe3\x82\x81\xe5\x88\x87\xe3\x82\x8a\xe6\x9b\xbf\xe3\x81\x88\xe3\x82\x8b\xe3\x81\xb9\xe3\x81\x97', // 伸びる時努力せよ '\xe4\xbc\xb8\xe3\x81\xb3\xe3\x82\x8b\xe6\x99\x82\xe5\x8a\xaa\xe5\x8a\x9b\xe3\x81\x9b\xe3\x82\x88', // 努力しただけ力になる '\xe5\x8a\xaa\xe5\x8a\x9b\xe3\x81\x97\xe3\x81\x9f\xe3\x81\xa0\xe3\x81\x91\xe5\x8a\x9b\xe3\x81\xab\xe3\x81\xaa\xe3\x82\x8b', // 歩み遅くとも着実に実る '\xe6\xad\xa9\xe3\x81\xbf\xe9\x81\x85\xe3\x81\x8f\xe3\x81\xa8\xe3\x82\x82\xe7\x9d\x80\xe5\xae\x9f\xe3\x81\xab\xe5\xae\x9f\xe3\x82\x8b', // 自信持てよろししかない '\xe8\x87\xaa\xe4\xbf\xa1\xe6\x8c\x81\xe3\x81\xa6\xe3\x82\x88\xe3\x82\x8d\xe3\x81\x97\xe3\x81\x97\xe3\x81\x8b\xe3\x81\xaa\xe3\x81\x84', // 信心すればどこまでも伸びる '\xe4\xbf\xa1\xe5\xbf\x83\xe3\x81\x99\xe3\x82\x8c\xe3\x81\xb0\xe3\x81\xa9\xe3\x81\x93\xe3\x81\xbe\xe3\x81\xa7\xe3\x82\x82\xe4\xbc\xb8\xe3\x81\xb3\xe3\x82\x8b' ], // DISPUTES [ // 争いごと負けなり '\xe4\xba\x89\xe3\x81\x84\xe3\x81\x94\xe3\x81\xa8\xe8\xb2\xa0\xe3\x81\x91\xe3\x81\xaa\xe3\x82\x8a', // 勝ち退くが利 '\xe5\x8b\x9d\xe3\x81\xa1\xe9\x80\x80\xe3\x81\x8f\xe3\x81\x8c\xe5\x88\xa9', // よろしさわぐな '\xe3\x82\x88\xe3\x82\x8d\xe3\x81\x97\xe3\x81\x95\xe3\x82\x8f\xe3\x81\x90\xe3\x81\xaa', // 心和やかにして吉 '\xe5\xbf\x83\xe5\x92\x8c\xe3\x82\x84\xe3\x81\x8b\xe3\x81\xab\xe3\x81\x97\xe3\x81\xa6\xe5\x90\x89', // 勝負に利あり '\xe5\x8b\x9d\xe8\xb2\xa0\xe3\x81\xab\xe5\x88\xa9\xe3\x81\x82\xe3\x82\x8a', // 不言実行にて勝つことやすし '\xe4\xb8\x8d\xe8\xa8\x80\xe5\xae\x9f\xe8\xa1\x8c\xe3\x81\xab\xe3\x81\xa6\xe5\x8b\x9d\xe3\x81\xa4\xe3\x81\x93\xe3\x81\xa8\xe3\x82\x84\xe3\x81\x99\xe3\x81\x97' ], // TRAVEL [ // かえりはほど知れず '\xe3\x81\x8b\xe3\x81\x88\xe3\x82\x8a\xe3\x81\xaf\xe3\x81\xbb\xe3\x81\xa9\xe7\x9f\xa5\xe3\x82\x8c\xe3\x81\x9a', // して良いが無理避けよ '\xe3\x81\x97\xe3\x81\xa6\xe8\x89\xaf\xe3\x81\x84\xe3\x81\x8c\xe7\x84\xa1\xe7\x90\x86\xe9\x81\xbf\xe3\x81\x91\xe3\x82\x88', // 遠くはいかぬが利 '\xe9\x81\xa0\xe3\x81\x8f\xe3\x81\xaf\xe3\x81\x84\xe3\x81\x8b\xe3\x81\xac\xe3\x81\x8c\xe5\x88\xa9', // 快調に進む '\xe5\xbf\xab\xe8\xaa\xbf\xe3\x81\xab\xe9\x80\xb2\xe3\x82\x80', // 場所に執着するな いけうまくいく '\xe5\xa0\xb4\xe6\x89\x80\xe3\x81\xab\xe5\x9f\xb7\xe7\x9d\x80\xe3\x81\x99\xe3\x82\x8b\xe3\x81\xaa\x20\xe3\x81\x84\xe3\x81\x91\xe3\x81\x86\xe3\x81\xbe\xe3\x81\x8f\xe3\x81\x84\xe3\x81\x8f', // 御神徳により成功しかない '\xe5\xbe\xa1\xe7\xa5\x9e\xe5\xbe\xb3\xe3\x81\xab\xe3\x82\x88\xe3\x82\x8a\xe6\x88\x90\xe5\x8a\x9f\xe3\x81\x97\xe3\x81\x8b\xe3\x81\xaa\xe3\x81\x84' ], // HEALTH [ // 医師はしっかり選べ '\xe5\x8c\xbb\xe5\xb8\xab\xe3\x81\xaf\xe3\x81\x97\xe3\x81\xa3\xe3\x81\x8b\xe3\x82\x8a\xe9\x81\xb8\xe3\x81\xb9', // 早く医師に診せろ '\xe6\x97\xa9\xe3\x81\x8f\xe5\x8c\xbb\xe5\xb8\xab\xe3\x81\xab\xe8\xa8\xba\xe3\x81\x9b\xe3\x82\x8d', // 異変感じたら休め '\xe7\x95\xb0\xe5\xa4\x89\xe6\x84\x9f\xe3\x81\x98\xe3\x81\x9f\xe3\x82\x89\xe4\xbc\x91\xe3\x82\x81', // 心穏やかに過ごせ 快方に向かう '\xe5\xbf\x83\xe7\xa9\x8f\xe3\x82\x84\xe3\x81\x8b\xe3\x81\xab\xe9\x81\x8e\xe3\x81\x94\xe3\x81\x9b\x20\xe5\xbf\xab\xe6\x96\xb9\xe3\x81\xab\xe5\x90\x91\xe3\x81\x8b\xe3\x81\x86', // 技術信ぜよ必ず治る '\xe6\x8a\x80\xe8\xa1\x93\xe4\xbf\xa1\xe3\x81\x9c\xe3\x82\x88\xe5\xbf\x85\xe3\x81\x9a\xe6\xb2\xbb\xe3\x82\x8b', // 御神徳により全て治る '\xe5\xbe\xa1\xe7\xa5\x9e\xe5\xbe\xb3\xe3\x81\xab\xe3\x82\x88\xe3\x82\x8a\xe5\x85\xa8\xe3\x81\xa6\xe6\xb2\xbb\xe3\x82\x8b' ] ]; string[] overallFortune = [ // 凶 '\xe5\x87\xb6', // 末吉 '\xe6\x9c\xab\xe5\x90\x89', // 吉 '\xe5\x90\x89', // 中吉 '\xe4\xb8\xad\xe5\x90\x89', // 大吉 '\xe5\xa4\xa7\xe5\x90\x89', // 大大吉 '\xe5\xa4\xa7\xe5\xa4\xa7\xe5\x90\x89' ]; // Beneficiary address address beneficiary; constructor() ERC721('DenDekaDen Genesis Omikuji', '$DDD') { beneficiary = owner(); } /** * @dev Check mints remaining per character * * Returns entire array for less rpc calls on frontend. Can't just return * mintsPerCharacter because it is a storage pointer. */ function characterMintsRemaining() public view returns (uint256[] memory) { uint256[] memory mintsRemaining = new uint256[](NUM_CHARACTERS); for (uint8 i = 0; i < NUM_CHARACTERS; i++) { mintsRemaining[i] = characterMintsRemaining(i); } return mintsRemaining; } /** * @dev Check mints remaining per character * * Returns entire array for less rpc calls on frontend. Can't just return * mintsPerCharacter because it is a storage pointer. */ function characterMintsRemaining(uint8 characterId) private view returns (uint256) { return OMIKUJI_PER_CHARACTER - ascendingCharacterMints[characterId] - descendingCharacterMints[characterId]; } /** * @dev Check mint eligability for address * * Returns: * - 0 if not eligable * - 1 if main mint * - 2 if whitelist * - 3 if teammint */ function mintEligability(address user, bytes32[] calldata proof) public view returns (uint8) { // first check if main mint is open if(mainMintStartTime <= block.timestamp) { return 1; } bytes32 leaf = keccak256(abi.encodePacked(user)); if(whitelistMintStartTime <= block.timestamp) { // check whitelist if (MerkleProof.verify(proof, whitelistMerkleRoot, leaf)) { return 2; } } // now check team whitelist if (MerkleProof.verify(proof, teamMerkleRoot, leaf)) { return 3; } return 0; } /** * @dev Set the whitelist root */ function setWhitelistRoot(bytes32 root) public onlyOwner { whitelistMerkleRoot = root; } /** * @dev Set the team whitelist root */ function setTeamMerkleRoot(bytes32 root) public onlyOwner { teamMerkleRoot = root; } function setBeneficiary(address _beneficiary) public onlyOwner { beneficiary = _beneficiary; } /** * @dev Set the whitelist and mint start times * * NOTE: can be used to close mint if need be */ function setMintTimes(uint256 whitelistStart, uint256 mintStart) public onlyOwner { whitelistMintStartTime = whitelistStart; mainMintStartTime = mintStart; } /** * @dev Public mint function * * If time is before open mint, will call whitelist mint, otherwise will call * normal mint. * * Cannot mint if not before start time. * * Requirements: * - cannot */ function mint(uint8 characterId, bytes32[] memory proof) public payable returns (uint256 tokenId) { // Check if should be whitelist or normal mint // if past normal mint time, do normal mint if (mainMintStartTime <= block.timestamp) { return _mint(characterId, true); } else if (whitelistMintStartTime <= block.timestamp) { // if during normal whitelist period, no need to decrement team mints if(_validateWhitelist(proof, whitelistMerkleRoot, true) || _validateWhitelist(proof, teamMerkleRoot, false)) { return _mint(characterId, true); } } else { if(_validateWhitelist(proof, teamMerkleRoot, false)) { return _teamMint(characterId); } } revert("DDDO: Not eligable or already whitelist minted"); } /** * @dev Whitelist mint * * Requirements: * - only allow ONE mint per whitelist address */ function _validateWhitelist(bytes32[] memory proof, bytes32 root, bool oneLimit) private returns (bool) { // ensure wallet owns no tokens if(whitelistAddressMints[msg.sender]) { return false; } // Check if address exists in merkle tree bytes32 leaf = keccak256(abi.encodePacked(msg.sender)); if(!MerkleProof.verify(proof, root, leaf)){ return false; } // mark account as having minted if(oneLimit) { whitelistAddressMints[msg.sender] = true; } // mint if qualifies return true; } /** * @dev Team Mint function * * Team can mint a limited number of tokens. * Team tokens CANNOT be godly tokens. */ function _teamMint(uint8 characterId) private returns (uint256) { // check we still have mints remaining require(teamMintsRemaining > 0, 'DDDO: No more team mints'); teamMintsRemaining -= 1; return _mint(characterId, false); } function ownerCharacters(address owner) public view returns (uint256[] memory) { uint256[] memory characters = new uint256[](NUM_CHARACTERS); for (uint8 i = 0; i < NUM_CHARACTERS; i++) { characters[i] = addressCharacterMints[owner][i]; } return characters; } /** * @dev Mints a new omikuji based on character provided * * Requirements: * - must not be called from contract * - must be valid character * - character must have available omikuji * - must not already own omikuji from this character */ function _mint(uint8 characterId, bool ascending) private returns (uint256) { // only allow mint from user address, not bot require(tx.origin == msg.sender, 'DDDO: must be wallet'); // ensure does not already own this character omikuji require(addressCharacterMints[msg.sender][characterId] == 0, "DDDO: Only 1 omikuji per chara"); // get next token id -- will revert if too many tokens minted for character uint256 tokenId = nextTokenIdForCharacter(characterId, ascending); // store seed variables used to calculate attributes // on mint, jsut store blockNum + blockHash (?) with tokenId & donation? uint256 timestamp = block.timestamp; TraitSeeds storage seeds = tokenTraitSeeds[tokenId]; seeds.timestamp = timestamp; seeds.donationAmount = msg.value; // if we do not have a godly token for this character, ~randomly see if godly token // NOTE: team mints CANNOT be godly tokens because they progress in descending order if (ascending && godlyTokens[characterId] == 0) { // if we do not have a godly token within first 107 mints, force 108 mint to be godly uint256 mintsRemaining = characterMintsRemaining(characterId); if (mintsRemaining == 0) { godlyTokens[characterId] = tokenId; } else { uint256 godlyModulo = mintsRemaining; // if donation is above threshold, boost probability to 20% or better if (msg.value >= DONATION_BOOST_THRESHOLD) { godlyModulo = godlyModulo > 5 ? 5 : godlyModulo; } // Roll for godly trait calculation here to test uint256 randRoll = uint256(keccak256(abi.encodePacked(tokenId, msg.sender, timestamp))) % godlyModulo; // If matches godlyModulo, we have found godly token! if (randRoll == 0) { godlyTokens[characterId] = tokenId; } } } // mint token super._mint(msg.sender, tokenId); // record this address has minted this character addressCharacterMints[msg.sender][characterId] = tokenId; return tokenId; } /** * @dev Generate the random attributes of a given token * * Depends on when and how minted, so pseudo random. * * NOTE: this is public because likely will use these values in the future. * * Traits are: * * LOVE * BENEFACTOR * BUSINESS * ACADEMICS * DISPUTES * TRAVEL * HEALTH * WISH -- no special -- last idx in arr */ function _generatePseudoRandomAttributes(uint256 tokenId) public view returns (uint8[] memory) { uint256 characterId = characterIdFromToken(tokenId); // in total 8 traits to derive from tokenId, timestamp, blockhash uint8[] memory attributes = new uint8[](8); TraitSeeds memory seeds = tokenTraitSeeds[tokenId]; bytes memory baseSeed = abi.encodePacked(seeds.timestamp, seeds.donationAmount, tokenId); for (uint256 i = 0; i < 8; i++) { uint8[] memory traitProbabilities; // check if should use special traits if (i == characterId) { // check if godly token if (godlyTokens[i] == tokenId) { traitProbabilities = new uint8[](1); traitProbabilities[0] = 5; } else { // check if should use boost or special probabilities if (seeds.donationAmount >= DONATION_BOOST_THRESHOLD) { traitProbabilities = boostAttributeProbabilities; } else { traitProbabilities = specialAttributeProbabilities; } } } else { // use base attribute probabilities traitProbabilities = baseAttributeProbabilities; } // generate random seed uint256 randSeed = uint256(keccak256(abi.encodePacked(baseSeed, i))); uint8 traitBucket = traitProbabilities[randSeed % traitProbabilities.length]; attributes[i] = traitBucket; } return attributes; } function attributesJson(uint256 tokenId, uint8[] memory wishAttrs) public view returns (bytes memory) { // check if has soul fragment // subtract one because tokens are 1 indexed uint256 characterId = characterIdFromToken(tokenId); // put together metadata bytes memory attributes = '['; // add in character name attributes = abi.encodePacked(attributes, attributeJson('0. SOUL', characterNames[characterId])); // loop through all fortune categories for (uint8 i = 0; i < wishAttrs.length; i++) { bytes memory attr; // check if special attribute for character if (i == characterId) { attr = attributeJson(fortuneCategories[i], specialFortuneValues[i][wishAttrs[i]]); attr = abi.encodePacked(attr, ',', attributeJson('1. FORTUNE', overallFortune[wishAttrs[i]])); } else { // not special category, so use normal odds attr = attributeJson(fortuneCategories[i], fortuneValues[i][wishAttrs[i]]); } attributes = abi.encodePacked( // add comma if not the first entry for json correct formatting attributes, ',', attr ); } // add in soul fragment attributes = abi.encodePacked(attributes, ',', attributeJson('Epoch', 'First Believers')); // close attributes attributes = abi.encodePacked(attributes, ']'); return attributes; } function attributeJson(string memory traitType, string memory traitValue) internal pure returns (bytes memory) { return abi.encodePacked( '{', abi.encodePacked('"trait_type": "', traitType, '",'), abi.encodePacked('"value": "', traitValue, '"'), '}' ); } /** * @dev create the image uri for resources * * Image is based on the luck level of the special attribute of the character. * */ function _generateImgUri(uint256 characterId, uint8 luckLevel) internal view returns (string memory) { return string( abi.encodePacked(_baseImgUri, uint256(characterId).toString(), '_', uint256(luckLevel).toString(), '.png') ); } /** * @dev Set a new uri for images so we can transition to IPFS * * If URI is locked, can never be changed. */ function setImgUri(string calldata _uri) external onlyOwner { require(!_imgUriLocked, 'DDDO: Img Uri is locked!'); _baseImgUri = _uri; } /** * @dev Lock the image URI so forever immutable * * NOTE: Can ONLY be called once, be sure images are correct */ function lockImgUri() public onlyOwner { _imgUriLocked = true; } /////////////// TOKEN ID UTILITY FUNCTIONS ////////////////// /** * @dev Calculates the next Id */ function nextTokenIdForCharacter(uint8 characterId, bool ascending) internal returns (uint256) { // ensure valid character require(characterId < NUM_CHARACTERS, 'DDDO: Invalid character id!'); // check can still mint for this character require(characterMintsRemaining(characterId) > 0, 'DDDO: No more omikuji available'); uint16 tokenOffset; if(ascending) { // mint from bottom up -- increment first so 1 indexed ascendingCharacterMints[characterId] += 1; tokenOffset = ascendingCharacterMints[characterId]; } else { // mint from top down -- increment after so ids are 1 indexed tokenOffset = OMIKUJI_PER_CHARACTER - descendingCharacterMints[characterId]; descendingCharacterMints[characterId] += 1; } // derive tokenId // NOTE: we add 1 here because NO TOKEN should have ID of 0 (for godly attribute check), so 1 indexed return characterId * OMIKUJI_PER_CHARACTER + tokenOffset; } function characterIdFromToken(uint256 tokenId) internal pure returns (uint256) { // subtract 1 because ids start at 1 return ((tokenId - 1) / OMIKUJI_PER_CHARACTER); } function tokenNumberForCharacter(uint256 tokenId) internal pure returns (uint256) { // subtract 1 because ids start at 1 return (tokenId - 1) % OMIKUJI_PER_CHARACTER; } function withdraw() public { beneficiary.call{ value: address(this).balance }(''); } /** * @dev Get OnChainMetadata for token */ function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { _requireMinted(tokenId); return getTokenURI(tokenId); } /** * @dev Generate metadata for each token. * * All attributes are onchain, images can be moved to ipfs when ready. */ function getTokenURI(uint256 tokenId) public view returns (string memory) { // 1 index characterID and character token uint256 characterId = characterIdFromToken(tokenId); uint256 characterToken = tokenNumberForCharacter(tokenId) + 1; uint8[] memory attributes = _generatePseudoRandomAttributes(tokenId); bytes memory tokenNameFormat = abi.encodePacked((characterToken < 10 ? '00' : (characterToken < 100 ? '0' : '')), characterToken.toString()); bytes memory dataURI = abi.encodePacked( '{', '"name": "', characterNames[characterId], "'s Fortune #", tokenNameFormat, '",', '"description": "', DESCRIPTION, characterNames[characterId], '.', '",', '"external_url": "', EXTERNAL_URL, '",', '"image": "', _generateImgUri(characterId, attributes[characterId]), '",', '"attributes": ', attributesJson(tokenId, attributes), '}' ); return string(abi.encodePacked('data:application/json;base64,', Base64.encode(dataURI))); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol) pragma solidity ^0.8.0; import "../utils/Context.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor() { _transferOwnership(_msgSender()); } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { _checkOwner(); _; } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if the sender is not the owner. */ function _checkOwner() internal view virtual { require(owner() == _msgSender(), "Ownable: caller is not the owner"); } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/ERC721.sol) pragma solidity ^0.8.0; import "./IERC721.sol"; import "./IERC721Receiver.sol"; import "./extensions/IERC721Metadata.sol"; import "../../utils/Address.sol"; import "../../utils/Context.sol"; import "../../utils/Strings.sol"; import "../../utils/introspection/ERC165.sol"; /** * @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including * the Metadata extension, but not including the Enumerable extension, which is available separately as * {ERC721Enumerable}. */ contract ERC721 is Context, ERC165, IERC721, IERC721Metadata { using Address for address; using Strings for uint256; // Token name string private _name; // Token symbol string private _symbol; // Mapping from token ID to owner address mapping(uint256 => address) private _owners; // Mapping owner address to token count mapping(address => uint256) private _balances; // Mapping from token ID to approved address mapping(uint256 => address) private _tokenApprovals; // Mapping from owner to operator approvals mapping(address => mapping(address => bool)) private _operatorApprovals; /** * @dev Initializes the contract by setting a `name` and a `symbol` to the token collection. */ constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) { return interfaceId == type(IERC721).interfaceId || interfaceId == type(IERC721Metadata).interfaceId || super.supportsInterface(interfaceId); } /** * @dev See {IERC721-balanceOf}. */ function balanceOf(address owner) public view virtual override returns (uint256) { require(owner != address(0), "ERC721: address zero is not a valid owner"); return _balances[owner]; } /** * @dev See {IERC721-ownerOf}. */ function ownerOf(uint256 tokenId) public view virtual override returns (address) { address owner = _owners[tokenId]; require(owner != address(0), "ERC721: invalid token ID"); return owner; } /** * @dev See {IERC721Metadata-name}. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev See {IERC721Metadata-symbol}. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev See {IERC721Metadata-tokenURI}. */ function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { _requireMinted(tokenId); string memory baseURI = _baseURI(); return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : ""; } /** * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each * token will be the concatenation of the `baseURI` and the `tokenId`. Empty * by default, can be overridden in child contracts. */ function _baseURI() internal view virtual returns (string memory) { return ""; } /** * @dev See {IERC721-approve}. */ function approve(address to, uint256 tokenId) public virtual override { address owner = ERC721.ownerOf(tokenId); require(to != owner, "ERC721: approval to current owner"); require( _msgSender() == owner || isApprovedForAll(owner, _msgSender()), "ERC721: approve caller is not token owner nor approved for all" ); _approve(to, tokenId); } /** * @dev See {IERC721-getApproved}. */ function getApproved(uint256 tokenId) public view virtual override returns (address) { _requireMinted(tokenId); return _tokenApprovals[tokenId]; } /** * @dev See {IERC721-setApprovalForAll}. */ function setApprovalForAll(address operator, bool approved) public virtual override { _setApprovalForAll(_msgSender(), operator, approved); } /** * @dev See {IERC721-isApprovedForAll}. */ function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } /** * @dev See {IERC721-transferFrom}. */ function transferFrom( address from, address to, uint256 tokenId ) public virtual override { //solhint-disable-next-line max-line-length require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: caller is not token owner 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: caller is not token 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) { address owner = ERC721.ownerOf(tokenId); return (spender == owner || isApprovedForAll(owner, spender) || getApproved(tokenId) == spender); } /** * @dev Safely mints `tokenId` and transfers it to `to`. * * Requirements: * * - `tokenId` must not exist. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function _safeMint(address to, uint256 tokenId) internal virtual { _safeMint(to, tokenId, ""); } /** * @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is * forwarded in {IERC721Receiver-onERC721Received} to contract recipients. */ function _safeMint( address to, uint256 tokenId, bytes memory data ) internal virtual { _mint(to, tokenId); require( _checkOnERC721Received(address(0), to, tokenId, data), "ERC721: transfer to non ERC721Receiver implementer" ); } /** * @dev Mints `tokenId` and transfers it to `to`. * * WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible * * Requirements: * * - `tokenId` must not exist. * - `to` cannot be the zero address. * * Emits a {Transfer} event. */ function _mint(address to, uint256 tokenId) internal virtual { require(to != address(0), "ERC721: mint to the zero address"); require(!_exists(tokenId), "ERC721: token already minted"); _beforeTokenTransfer(address(0), to, tokenId); _balances[to] += 1; _owners[tokenId] = to; emit Transfer(address(0), to, tokenId); _afterTokenTransfer(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); _afterTokenTransfer(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 from incorrect owner"); 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); _afterTokenTransfer(from, to, tokenId); } /** * @dev Approve `to` to operate on `tokenId` * * Emits an {Approval} event. */ function _approve(address to, uint256 tokenId) internal virtual { _tokenApprovals[tokenId] = to; emit Approval(ERC721.ownerOf(tokenId), to, tokenId); } /** * @dev Approve `operator` to operate on all of `owner` tokens * * Emits an {ApprovalForAll} event. */ function _setApprovalForAll( address owner, address operator, bool approved ) internal virtual { require(owner != operator, "ERC721: approve to caller"); _operatorApprovals[owner][operator] = approved; emit ApprovalForAll(owner, operator, approved); } /** * @dev Reverts if the `tokenId` has not been minted yet. */ function _requireMinted(uint256 tokenId) internal view virtual { require(_exists(tokenId), "ERC721: invalid token ID"); } /** * @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address. * The call is not executed if the target address is not a contract. * * @param from address representing the previous owner of the given token ID * @param to target address that will receive the tokens * @param tokenId uint256 ID of the token to be transferred * @param data bytes optional data to send along with the call * @return bool whether the call correctly returned the expected magic value */ function _checkOnERC721Received( address from, address to, uint256 tokenId, bytes memory data ) private returns (bool) { if (to.isContract()) { try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, data) returns (bytes4 retval) { return retval == IERC721Receiver.onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { revert("ERC721: transfer to non ERC721Receiver implementer"); } else { /// @solidity memory-safe-assembly assembly { revert(add(32, reason), mload(reason)) } } } } else { return true; } } /** * @dev Hook that is called before any token transfer. This includes minting * and burning. * * 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 {} /** * @dev Hook that is called after any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _afterTokenTransfer( address from, address to, uint256 tokenId ) internal virtual {} }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (utils/Base64.sol) pragma solidity ^0.8.0; /** * @dev Provides a set of functions to operate with Base64 strings. * * _Available since v4.5._ */ library Base64 { /** * @dev Base64 Encoding/Decoding Table */ string internal constant _TABLE = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; /** * @dev Converts a `bytes` to its Bytes64 `string` representation. */ function encode(bytes memory data) internal pure returns (string memory) { /** * Inspired by Brecht Devos (Brechtpd) implementation - MIT licence * https://github.com/Brechtpd/base64/blob/e78d9fd951e7b0977ddca77d92dc85183770daf4/base64.sol */ if (data.length == 0) return ""; // Loads the table into memory string memory table = _TABLE; // Encoding takes 3 bytes chunks of binary data from `bytes` data parameter // and split into 4 numbers of 6 bits. // The final Base64 length should be `bytes` data length multiplied by 4/3 rounded up // - `data.length + 2` -> Round up // - `/ 3` -> Number of 3-bytes chunks // - `4 *` -> 4 characters for each chunk string memory result = new string(4 * ((data.length + 2) / 3)); /// @solidity memory-safe-assembly assembly { // Prepare the lookup table (skip the first "length" byte) let tablePtr := add(table, 1) // Prepare result pointer, jump over length let resultPtr := add(result, 32) // Run over the input, 3 bytes at a time for { let dataPtr := data let endPtr := add(data, mload(data)) } lt(dataPtr, endPtr) { } { // Advance 3 bytes dataPtr := add(dataPtr, 3) let input := mload(dataPtr) // To write each character, shift the 3 bytes (18 bits) chunk // 4 times in blocks of 6 bits for each character (18, 12, 6, 0) // and apply logical AND with 0x3F which is the number of // the previous character in the ASCII table prior to the Base64 Table // The result is then added to the table to get the character to write, // and finally write it in the result pointer but with a left shift // of 256 (1 byte) - 8 (1 ASCII char) = 248 bits mstore8(resultPtr, mload(add(tablePtr, and(shr(18, input), 0x3F)))) resultPtr := add(resultPtr, 1) // Advance mstore8(resultPtr, mload(add(tablePtr, and(shr(12, input), 0x3F)))) resultPtr := add(resultPtr, 1) // Advance mstore8(resultPtr, mload(add(tablePtr, and(shr(6, input), 0x3F)))) resultPtr := add(resultPtr, 1) // Advance mstore8(resultPtr, mload(add(tablePtr, and(input, 0x3F)))) resultPtr := add(resultPtr, 1) // Advance } // When data `bytes` is not exactly 3 bytes long // it is padded with `=` characters at the end switch mod(mload(data), 3) case 1 { mstore8(sub(resultPtr, 1), 0x3d) mstore8(sub(resultPtr, 2), 0x3d) } case 2 { mstore8(sub(resultPtr, 1), 0x3d) } } return result; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol) pragma solidity ^0.8.0; /** * @dev String operations. */ library Strings { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; uint8 private constant _ADDRESS_LENGTH = 20; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { // 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); } /** * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation. */ function toHexString(address addr) internal pure returns (string memory) { return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (utils/cryptography/MerkleProof.sol) pragma solidity ^0.8.0; /** * @dev These functions deal with verification of Merkle Tree proofs. * * The proofs can be generated using the JavaScript library * https://github.com/miguelmota/merkletreejs[merkletreejs]. * Note: the hashing algorithm should be keccak256 and pair sorting should be enabled. * * See `test/utils/cryptography/MerkleProof.test.js` for some examples. * * WARNING: You should avoid using leaf values that are 64 bytes long prior to * hashing, or use a hash function other than keccak256 for hashing leaves. * This is because the concatenation of a sorted pair of internal nodes in * the merkle tree could be reinterpreted as a leaf value. */ library MerkleProof { /** * @dev Returns true if a `leaf` can be proved to be a part of a Merkle tree * defined by `root`. For this, a `proof` must be provided, containing * sibling hashes on the branch from the leaf to the root of the tree. Each * pair of leaves and each pair of pre-images are assumed to be sorted. */ function verify( bytes32[] memory proof, bytes32 root, bytes32 leaf ) internal pure returns (bool) { return processProof(proof, leaf) == root; } /** * @dev Calldata version of {verify} * * _Available since v4.7._ */ function verifyCalldata( bytes32[] calldata proof, bytes32 root, bytes32 leaf ) internal pure returns (bool) { return processProofCalldata(proof, leaf) == root; } /** * @dev Returns the rebuilt hash obtained by traversing a Merkle tree up * from `leaf` using `proof`. A `proof` is valid if and only if the rebuilt * hash matches the root of the tree. When processing the proof, the pairs * of leafs & pre-images are assumed to be sorted. * * _Available since v4.4._ */ function processProof(bytes32[] memory proof, bytes32 leaf) internal pure returns (bytes32) { bytes32 computedHash = leaf; for (uint256 i = 0; i < proof.length; i++) { computedHash = _hashPair(computedHash, proof[i]); } return computedHash; } /** * @dev Calldata version of {processProof} * * _Available since v4.7._ */ function processProofCalldata(bytes32[] calldata proof, bytes32 leaf) internal pure returns (bytes32) { bytes32 computedHash = leaf; for (uint256 i = 0; i < proof.length; i++) { computedHash = _hashPair(computedHash, proof[i]); } return computedHash; } /** * @dev Returns true if the `leaves` can be proved to be a part of a Merkle tree defined by * `root`, according to `proof` and `proofFlags` as described in {processMultiProof}. * * _Available since v4.7._ */ function multiProofVerify( bytes32[] memory proof, bool[] memory proofFlags, bytes32 root, bytes32[] memory leaves ) internal pure returns (bool) { return processMultiProof(proof, proofFlags, leaves) == root; } /** * @dev Calldata version of {multiProofVerify} * * _Available since v4.7._ */ function multiProofVerifyCalldata( bytes32[] calldata proof, bool[] calldata proofFlags, bytes32 root, bytes32[] memory leaves ) internal pure returns (bool) { return processMultiProofCalldata(proof, proofFlags, leaves) == root; } /** * @dev Returns the root of a tree reconstructed from `leaves` and the sibling nodes in `proof`, * consuming from one or the other at each step according to the instructions given by * `proofFlags`. * * _Available since v4.7._ */ function processMultiProof( bytes32[] memory proof, bool[] memory proofFlags, bytes32[] memory leaves ) internal pure returns (bytes32 merkleRoot) { // This function rebuild the root hash by traversing the tree up from the leaves. The root is rebuilt by // consuming and producing values on a queue. The queue starts with the `leaves` array, then goes onto the // `hashes` array. At the end of the process, the last hash in the `hashes` array should contain the root of // the merkle tree. uint256 leavesLen = leaves.length; uint256 totalHashes = proofFlags.length; // Check proof validity. require(leavesLen + proof.length - 1 == totalHashes, "MerkleProof: invalid multiproof"); // The xxxPos values are "pointers" to the next value to consume in each array. All accesses are done using // `xxx[xxxPos++]`, which return the current value and increment the pointer, thus mimicking a queue's "pop". bytes32[] memory hashes = new bytes32[](totalHashes); uint256 leafPos = 0; uint256 hashPos = 0; uint256 proofPos = 0; // At each step, we compute the next hash using two values: // - a value from the "main queue". If not all leaves have been consumed, we get the next leaf, otherwise we // get the next hash. // - depending on the flag, either another value for the "main queue" (merging branches) or an element from the // `proof` array. for (uint256 i = 0; i < totalHashes; i++) { bytes32 a = leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++]; bytes32 b = proofFlags[i] ? leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++] : proof[proofPos++]; hashes[i] = _hashPair(a, b); } if (totalHashes > 0) { return hashes[totalHashes - 1]; } else if (leavesLen > 0) { return leaves[0]; } else { return proof[0]; } } /** * @dev Calldata version of {processMultiProof} * * _Available since v4.7._ */ function processMultiProofCalldata( bytes32[] calldata proof, bool[] calldata proofFlags, bytes32[] memory leaves ) internal pure returns (bytes32 merkleRoot) { // This function rebuild the root hash by traversing the tree up from the leaves. The root is rebuilt by // consuming and producing values on a queue. The queue starts with the `leaves` array, then goes onto the // `hashes` array. At the end of the process, the last hash in the `hashes` array should contain the root of // the merkle tree. uint256 leavesLen = leaves.length; uint256 totalHashes = proofFlags.length; // Check proof validity. require(leavesLen + proof.length - 1 == totalHashes, "MerkleProof: invalid multiproof"); // The xxxPos values are "pointers" to the next value to consume in each array. All accesses are done using // `xxx[xxxPos++]`, which return the current value and increment the pointer, thus mimicking a queue's "pop". bytes32[] memory hashes = new bytes32[](totalHashes); uint256 leafPos = 0; uint256 hashPos = 0; uint256 proofPos = 0; // At each step, we compute the next hash using two values: // - a value from the "main queue". If not all leaves have been consumed, we get the next leaf, otherwise we // get the next hash. // - depending on the flag, either another value for the "main queue" (merging branches) or an element from the // `proof` array. for (uint256 i = 0; i < totalHashes; i++) { bytes32 a = leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++]; bytes32 b = proofFlags[i] ? leafPos < leavesLen ? leaves[leafPos++] : hashes[hashPos++] : proof[proofPos++]; hashes[i] = _hashPair(a, b); } if (totalHashes > 0) { return hashes[totalHashes - 1]; } else if (leavesLen > 0) { return leaves[0]; } else { return proof[0]; } } function _hashPair(bytes32 a, bytes32 b) private pure returns (bytes32) { return a < b ? _efficientHash(a, b) : _efficientHash(b, a); } function _efficientHash(bytes32 a, bytes32 b) private pure returns (bytes32 value) { /// @solidity memory-safe-assembly assembly { mstore(0x00, a) mstore(0x20, b) value := keccak256(0x00, 0x40) } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (token/ERC721/IERC721.sol) pragma solidity ^0.8.0; import "../../utils/introspection/IERC165.sol"; /** * @dev Required interface of an ERC721 compliant contract. */ interface IERC721 is IERC165 { /** * @dev Emitted when `tokenId` token is transferred from `from` to `to`. */ event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. */ event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets. */ event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /** * @dev Returns the number of tokens in ``owner``'s account. */ function balanceOf(address owner) external view returns (uint256 balance); /** * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function ownerOf(uint256 tokenId) external view returns (address owner); /** * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes calldata data ) external; /** * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients * are aware of the ERC721 protocol to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must have been allowed to move this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId ) external; /** * @dev Transfers `tokenId` token from `from` to `to`. * * WARNING: 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 Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. */ function setApprovalForAll(address operator, bool _approved) external; /** * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function getApproved(uint256 tokenId) external view returns (address operator); /** * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll} */ function isApprovedForAll(address owner, address operator) external view returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol) pragma solidity ^0.8.0; /** * @title ERC721 token receiver interface * @dev Interface for any contract that wants to support safeTransfers * from ERC721 asset contracts. */ interface IERC721Receiver { /** * @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom} * by `operator` from `from`, this function is called. * * It must return its Solidity selector to confirm the token transfer. * If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted. * * The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`. */ function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol) pragma solidity ^0.8.0; import "../IERC721.sol"; /** * @title ERC-721 Non-Fungible Token Standard, optional metadata extension * @dev See https://eips.ethereum.org/EIPS/eip-721 */ interface IERC721Metadata is IERC721 { /** * @dev Returns the token collection name. */ function name() external view returns (string memory); /** * @dev Returns the token collection symbol. */ function symbol() external view returns (string memory); /** * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. */ function tokenURI(uint256 tokenId) external view returns (string memory); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol) pragma solidity ^0.8.1; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return 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 /// @solidity memory-safe-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol) pragma solidity ^0.8.0; import "./IERC165.sol"; /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. */ abstract contract ERC165 is IERC165 { /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); }
{ "optimizer": { "enabled": true, "runs": 200 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "libraries": {} }
Contract Security Audit
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me":"data","type":"bytes"}],"name":"safeTransferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_beneficiary","type":"address"}],"name":"setBeneficiary","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"_uri","type":"string"}],"name":"setImgUri","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"whitelistStart","type":"uint256"},{"internalType":"uint256","name":"mintStart","type":"uint256"}],"name":"setMintTimes","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"root","type":"bytes32"}],"name":"setTeamMerkleRoot","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"root","type":"bytes32"}],"name":"setWhitelistRoot","outputs":[],"stateMutability":"nonpayable","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":"tokenId","type":"uint256"}],"name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}],"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":[],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"}]
Contract Creation Code
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A token is a representation of an on-chain or off-chain asset. The token page shows information such as price, total supply, holders, transfers and social links. Learn more about this page in our Knowledge Base.