Contract 0xbd3C6aF08F193E52d7e897c66ad7dE4237369dbB 2

 
 
Txn Hash
Method
Block
From
To
Value
0x030853b21ad3cb371ce383432f8662aac4ffb3161f6d50772a553690f3247f42Transfer From158708822022-10-31 22:00:2330 days 19 hrs ago0x077ec900f2cd11a52653bcc0851be51c5f519ed0 IN  0xbd3c6af08f193e52d7e897c66ad7de4237369dbb0 Ether0.00108597 18.86027686
0x81ede6fa53501002be7f7110a86a9525cd2f2719ce5114ce8d1d36c6549eef25Set Approval For...154106792022-08-25 18:37:5897 days 22 hrs agoENS Name parabolamusic.eth IN  0xbd3c6af08f193e52d7e897c66ad7de4237369dbb0 Ether0.00090539 19.65765395
0x40d977be777f62f068ce50d0966f564ff08dab34095d64a5a9eec1f727c678c8Set Approval For...151122332022-07-10 2:38:20144 days 14 hrs agoENS Name otostopcu.eth IN  0xbd3c6af08f193e52d7e897c66ad7de4237369dbb0 Ether0.00110293 23.90309843
0x0bd832ac5585743a3e952941097a4e5e03ae76cd2a2abc9bbb303be61f322508Set Approval For...150524192022-06-30 20:46:13153 days 20 hrs agoENS Name otostopcu.eth IN  0xbd3c6af08f193e52d7e897c66ad7de4237369dbb0 Ether0.00068887 28.4306967
0xce1348d2e2b2fb10ecf69644347dfa48e725bb9ce16d6b4ee18ce31494577232Set Approval For...146562202022-04-25 21:37:29219 days 19 hrs ago0x341512a097c1e9b3f4916c9a0f25a56d38f12c1e IN  0xbd3c6af08f193e52d7e897c66ad7de4237369dbb0 Ether0.00343073 74.35177975
0xd63e6847e22d173e7a5a41b785aea7405f9e4b23949349a2bf1c6dd7d1feb5cdSet Approval For...146504032022-04-24 23:34:04220 days 17 hrs ago0x331bb44bfd8095b8887a12a4a854d179386b0c44 IN  0xbd3c6af08f193e52d7e897c66ad7de4237369dbb0 Ether0.00128989 27.95481224
0x6608a5616d1a5982422c312a4f997c756fcd8653ace478bf0890c1f1b0e6a8eaSafe Transfer Fr...146288612022-04-21 14:36:11224 days 2 hrs ago0x93372149b712c5b69e17aa27eabbd1f0cee03ffa IN  0xbd3c6af08f193e52d7e897c66ad7de4237369dbb0 Ether0.00431079 66.10131606
0xa28fa9c5872be953ea0514e102426617cd041da7300ca627039ff79b2d8431baTransfer From146258492022-04-21 3:03:37224 days 14 hrs agoENS Name antran.eth IN  0xbd3c6af08f193e52d7e897c66ad7de4237369dbb0 Ether0.00250325 61.83939756
0x7512b39355dfb159c48b95f014b2696326b51a8cfd8fff3d2a79ada39447ec71Set Approval For...146258402022-04-21 3:01:47224 days 14 hrs agoENS Name antran.eth IN  0xbd3c6af08f193e52d7e897c66ad7de4237369dbb0 Ether0.00292247 63.33660538
0xbbed09cf8aee93ee297b599291277b6ff7a270a045a4f399743cb44500ce3dd1Set Approval For...146107232022-04-18 18:16:37226 days 23 hrs ago0x93372149b712c5b69e17aa27eabbd1f0cee03ffa IN  0xbd3c6af08f193e52d7e897c66ad7de4237369dbb0 Ether0.00426524 92.43738317
0x7e02aa1db7c3e067948312192e6c53e534ada0a9eb11a9f8674e4a0138209af6Set Approval For...145742692022-04-13 1:34:54232 days 15 hrs ago0x93372149b712c5b69e17aa27eabbd1f0cee03ffa IN  0xbd3c6af08f193e52d7e897c66ad7de4237369dbb0 Ether0.00093928 35.79328403
0x220127be49407fda1b0725592b4deb3dc58f95888dad21ea661c929ebf612b0eSet Approval For...145742682022-04-13 1:34:05232 days 15 hrs ago0x93372149b712c5b69e17aa27eabbd1f0cee03ffa IN  0xbd3c6af08f193e52d7e897c66ad7de4237369dbb0 Ether0.00084085 32.04229852
0xedffb6c838cda692abe56103a3162c1d70c8a157feaf73cdaf879023d7aa1300Set Approval For...145742682022-04-13 1:34:05232 days 15 hrs ago0x93372149b712c5b69e17aa27eabbd1f0cee03ffa IN  0xbd3c6af08f193e52d7e897c66ad7de4237369dbb0 Ether0.00147849 32.04229852
0x214db65bc1c6c526bc7f6b58a81379d3ebbb7adcef218d6b505e8b587904fae0Set Approval For...145564152022-04-10 6:45:38235 days 10 hrs agoENS Name aramtastekin.eth IN  0xbd3c6af08f193e52d7e897c66ad7de4237369dbb0 Ether0.00050976 19.42549431
0x9d7e85691f00d11e790286ae78c602778c040ab2dbec9ef2a7786e4b46e53f07Set Approval For...145564152022-04-10 6:45:38235 days 10 hrs agoENS Name aramtastekin.eth IN  0xbd3c6af08f193e52d7e897c66ad7de4237369dbb0 Ether0.00089633 19.42549431
0xc9f3c6f0ded362b617c104cf5c7605254c1768ebe926c3601726e97f0ee72dfaTransfer From145354282022-04-07 0:01:21238 days 17 hrs agoENS Name nftspacebar.eth IN  0xbd3c6af08f193e52d7e897c66ad7de4237369dbb0 Ether0.00347848 76.84210746
0xc4f9b44feab6bfa63e89bf0fa36c628bd9e02b15382ccb7b36cec7a41f1c4c86Transfer From145354262022-04-07 0:01:08238 days 17 hrs agoENS Name nftspacebar.eth IN  0xbd3c6af08f193e52d7e897c66ad7de4237369dbb0 Ether0.00530503 85.06025895
0xbaf6edbcdb0cf45944d83c338a20538fc52728294d4d3fbd90134d0b3aa64e5cSet Approval For...145040672022-04-02 2:15:30243 days 15 hrs agoENS Name bagerart.eth IN  0xbd3c6af08f193e52d7e897c66ad7de4237369dbb0 Ether0.00247648 53.67094599
0x76f82c5d78d1b6583b9b0d4960d1045796c3f8166b5469cbe811ff3a3ee99985Set Approval For...144349572022-03-22 8:09:44254 days 9 hrs agoENS Name liseykina.eth IN  0xbd3c6af08f193e52d7e897c66ad7de4237369dbb0 Ether0.0010355 22.44166379
0x264c0af33fbf52c3461f48c499fc1875ed9d9cadbe401fc9c20f3d0e12d88caeWithdraw144063112022-03-17 21:05:32258 days 20 hrs agoMetaMobs: Deployer IN  0xbd3c6af08f193e52d7e897c66ad7de4237369dbb0 Ether0.0093478 61.61545232
0xc8912ccf3bac48b16fe75bbff69b787e54a1e437e3ecd05c2021f5e3e67fa498Set Approval For...144060872022-03-17 20:16:46258 days 20 hrs agoENS Name jerfius.eth IN  0xbd3c6af08f193e52d7e897c66ad7de4237369dbb0 Ether0.00237786 51.53362881
0xbad97e97a51042ca6197b857b0549c8d9f093090b17b4349652c4807c0b7aae8Safe Transfer Fr...143557082022-03-09 23:53:10266 days 17 hrs ago0x5133a25fdea9e16d0a5b00ed778c99286f6b8797 IN  0xbd3c6af08f193e52d7e897c66ad7de4237369dbb0 Ether0.00199015 32.94144988
0x47c807cd1f4d941b8749edf9a0c3614f11edc44e68405b9e68caf192bad9d959Transfer From143359792022-03-06 22:28:38269 days 18 hrs agoENS Name bagerart.eth IN  0xbd3c6af08f193e52d7e897c66ad7de4237369dbb0 Ether0.00307459 49.28821952
0x98cab9198821eef6f07c9dc956257aa1a4fec6a1d1c1aa60f47532190a97091aTransfer From143236242022-03-05 0:04:50271 days 17 hrs agoENS Name keithspina.eth IN  0xbd3c6af08f193e52d7e897c66ad7de4237369dbb0 Ether0.00346721 55.58222057
0x8497becbb9f0980842d196d77c1fb11204f562ec183708123a62d35c639c8e47Set Approval For...143082252022-03-02 14:41:27274 days 2 hrs ago0x6e733f8992c0ea0885170a4331cb4318f539fe21 IN  0xbd3c6af08f193e52d7e897c66ad7de4237369dbb0 Ether0.00203917 44.19345873
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Latest 25 internal transaction
Parent Txn Hash Block From To Value
0x264c0af33fbf52c3461f48c499fc1875ed9d9cadbe401fc9c20f3d0e12d88cae144063112022-03-17 21:05:32258 days 20 hrs ago 0xbd3c6af08f193e52d7e897c66ad7de4237369dbbENS Name accountant.ndao.eth0.0172 Ether
0x264c0af33fbf52c3461f48c499fc1875ed9d9cadbe401fc9c20f3d0e12d88cae144063112022-03-17 21:05:32258 days 20 hrs ago 0xbd3c6af08f193e52d7e897c66ad7de4237369dbb0xc20786135d630b3f79f1413d0d8cf401f1bdb8600.0086 Ether
0x264c0af33fbf52c3461f48c499fc1875ed9d9cadbe401fc9c20f3d0e12d88cae144063112022-03-17 21:05:32258 days 20 hrs ago 0xbd3c6af08f193e52d7e897c66ad7de4237369dbb0x331bb44bfd8095b8887a12a4a854d179386b0c440.0344 Ether
0x264c0af33fbf52c3461f48c499fc1875ed9d9cadbe401fc9c20f3d0e12d88cae144063112022-03-17 21:05:32258 days 20 hrs ago 0xbd3c6af08f193e52d7e897c66ad7de4237369dbb0xbc164c450b9b56669649c9b7aab50e65085e5f6d0.0602 Ether
0x264c0af33fbf52c3461f48c499fc1875ed9d9cadbe401fc9c20f3d0e12d88cae144063112022-03-17 21:05:32258 days 20 hrs ago 0xbd3c6af08f193e52d7e897c66ad7de4237369dbbENS Name artography.eth0.0602 Ether
0x264c0af33fbf52c3461f48c499fc1875ed9d9cadbe401fc9c20f3d0e12d88cae144063112022-03-17 21:05:32258 days 20 hrs ago 0xbd3c6af08f193e52d7e897c66ad7de4237369dbb0x4ce808fad9923398e63d8a760f24409301bdc0f90.0688 Ether
0x264c0af33fbf52c3461f48c499fc1875ed9d9cadbe401fc9c20f3d0e12d88cae144063112022-03-17 21:05:32258 days 20 hrs ago 0xbd3c6af08f193e52d7e897c66ad7de4237369dbb0x1d1997edf9ea8d75bcd2e24211aa3665f01463740.0688 Ether
0x264c0af33fbf52c3461f48c499fc1875ed9d9cadbe401fc9c20f3d0e12d88cae144063112022-03-17 21:05:32258 days 20 hrs ago 0xbd3c6af08f193e52d7e897c66ad7de4237369dbbENS Name sendrock.eth0.086 Ether
0x264c0af33fbf52c3461f48c499fc1875ed9d9cadbe401fc9c20f3d0e12d88cae144063112022-03-17 21:05:32258 days 20 hrs ago 0xbd3c6af08f193e52d7e897c66ad7de4237369dbb0xdf210cf3aec762903c8f9bf4249fdb4ae84faf190.1634 Ether
0x264c0af33fbf52c3461f48c499fc1875ed9d9cadbe401fc9c20f3d0e12d88cae144063112022-03-17 21:05:32258 days 20 hrs ago 0xbd3c6af08f193e52d7e897c66ad7de4237369dbb0x9afaaae1fe850cd71324930fa399bc41ae7aa0ce0.1634 Ether
0x264c0af33fbf52c3461f48c499fc1875ed9d9cadbe401fc9c20f3d0e12d88cae144063112022-03-17 21:05:32258 days 20 hrs ago 0xbd3c6af08f193e52d7e897c66ad7de4237369dbb0x2d0f4bcd4d2f08fabd5a9e6ed7c7ee86afc3b73f0.129 Ether
0x43a23b9346b52c8526a5f57f91a6c8c8d59873081fb0e1cd93f77031b3ccb6e6140838472022-01-26 22:13:19308 days 19 hrs ago 0xbd3c6af08f193e52d7e897c66ad7de4237369dbbENS Name accountant.ndao.eth0.0476 Ether
0x43a23b9346b52c8526a5f57f91a6c8c8d59873081fb0e1cd93f77031b3ccb6e6140838472022-01-26 22:13:19308 days 19 hrs ago 0xbd3c6af08f193e52d7e897c66ad7de4237369dbb0xc20786135d630b3f79f1413d0d8cf401f1bdb8600.0238 Ether
0x43a23b9346b52c8526a5f57f91a6c8c8d59873081fb0e1cd93f77031b3ccb6e6140838472022-01-26 22:13:19308 days 19 hrs ago 0xbd3c6af08f193e52d7e897c66ad7de4237369dbb0x331bb44bfd8095b8887a12a4a854d179386b0c440.0952 Ether
0x43a23b9346b52c8526a5f57f91a6c8c8d59873081fb0e1cd93f77031b3ccb6e6140838472022-01-26 22:13:19308 days 19 hrs ago 0xbd3c6af08f193e52d7e897c66ad7de4237369dbb0xbc164c450b9b56669649c9b7aab50e65085e5f6d0.1666 Ether
0x43a23b9346b52c8526a5f57f91a6c8c8d59873081fb0e1cd93f77031b3ccb6e6140838472022-01-26 22:13:19308 days 19 hrs ago 0xbd3c6af08f193e52d7e897c66ad7de4237369dbbENS Name artography.eth0.1666 Ether
0x43a23b9346b52c8526a5f57f91a6c8c8d59873081fb0e1cd93f77031b3ccb6e6140838472022-01-26 22:13:19308 days 19 hrs ago 0xbd3c6af08f193e52d7e897c66ad7de4237369dbb0x4ce808fad9923398e63d8a760f24409301bdc0f90.1904 Ether
0x43a23b9346b52c8526a5f57f91a6c8c8d59873081fb0e1cd93f77031b3ccb6e6140838472022-01-26 22:13:19308 days 19 hrs ago 0xbd3c6af08f193e52d7e897c66ad7de4237369dbb0x1d1997edf9ea8d75bcd2e24211aa3665f01463740.1904 Ether
0x43a23b9346b52c8526a5f57f91a6c8c8d59873081fb0e1cd93f77031b3ccb6e6140838472022-01-26 22:13:19308 days 19 hrs ago 0xbd3c6af08f193e52d7e897c66ad7de4237369dbbENS Name sendrock.eth0.238 Ether
0x43a23b9346b52c8526a5f57f91a6c8c8d59873081fb0e1cd93f77031b3ccb6e6140838472022-01-26 22:13:19308 days 19 hrs ago 0xbd3c6af08f193e52d7e897c66ad7de4237369dbb0xdf210cf3aec762903c8f9bf4249fdb4ae84faf190.4522 Ether
0x43a23b9346b52c8526a5f57f91a6c8c8d59873081fb0e1cd93f77031b3ccb6e6140838472022-01-26 22:13:19308 days 19 hrs ago 0xbd3c6af08f193e52d7e897c66ad7de4237369dbb0x9afaaae1fe850cd71324930fa399bc41ae7aa0ce0.4522 Ether
0x43a23b9346b52c8526a5f57f91a6c8c8d59873081fb0e1cd93f77031b3ccb6e6140838472022-01-26 22:13:19308 days 19 hrs ago 0xbd3c6af08f193e52d7e897c66ad7de4237369dbb0x2d0f4bcd4d2f08fabd5a9e6ed7c7ee86afc3b73f0.357 Ether
0x10b3c77fcdb976d7cdf68d0405091d5485cee7b6ce24bb920343b53191ff01ee140637322022-01-23 19:18:13311 days 21 hrs ago 0xbd3c6af08f193e52d7e897c66ad7de4237369dbbENS Name accountant.ndao.eth0.132 Ether
0x10b3c77fcdb976d7cdf68d0405091d5485cee7b6ce24bb920343b53191ff01ee140637322022-01-23 19:18:13311 days 21 hrs ago 0xbd3c6af08f193e52d7e897c66ad7de4237369dbb0xc20786135d630b3f79f1413d0d8cf401f1bdb8600.066 Ether
0x10b3c77fcdb976d7cdf68d0405091d5485cee7b6ce24bb920343b53191ff01ee140637322022-01-23 19:18:13311 days 21 hrs ago 0xbd3c6af08f193e52d7e897c66ad7de4237369dbb0x331bb44bfd8095b8887a12a4a854d179386b0c440.264 Ether
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Contract Source Code Verified (Exact Match)

Contract Name:
MiuRescueTeam

Compiler Version
v0.8.11+commit.d7f03943

Optimization Enabled:
Yes with 5000 runs

Other Settings:
default evmVersion
File 1 of 12 : MiuRescueTeam.sol
// SPDX-License-Identifier: GPL-3.0
// Author: Pagzi Tech Inc. | 2022
// Miu Rescue Team | 2022
pragma solidity ^0.8.11;
import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import "@openzeppelin/contracts/access/Ownable.sol";

contract MiuRescueTeam is ERC721, Ownable {
  string public baseURI;
  uint256 public supply = 10000;
  uint256 public totalSupply;
  address miuDevTeam = 0x2d0F4bcD4D2f08FAbD5a9e6Ed7c7eE86aFC3B73f;
  address miuFounder = 0xeC35A4F27f5163e3035510E13a227fA518c4906d;
  address miuFounder1 = 0x9aFaAaE1FE850CD71324930Fa399BC41ae7Aa0ce;
  address miuFounder2 = 0xDF210CF3aec762903c8F9bf4249FDb4aE84fAf19;
  address miuAdvisor = 0xfBC76261FD55cF91b81a97dbcc2B3F6118f2B935;
  address miuIllustrator1 = 0x1D1997Edf9Ea8D75bCd2E24211AA3665f0146374;
  address miuIllustrator2 = 0x4ce808fAd9923398e63D8A760f24409301BdC0F9;
  address miuCommunity1 = 0x81845ec7df4Fa5776998053457b8c4fB1e60CF84;
  address miuCommunity2 = 0xbc164c450B9b56669649c9b7AaB50e65085E5F6D;
  address miuDiscord = 0x331bB44Bfd8095B8887A12a4A854D179386b0c44;
  address miuWfAWDonate = 0x9D5025B327E6B863E5050141C987d988c07fd8B2;
  address miuProjectBox = 0xC20786135D630B3F79F1413D0d8cF401F1bDb860;
  //presale settings
  uint256 public publicDate = 1642975200000;

  constructor(
  string memory _initBaseURI
  ) ERC721("Miu Rescue Team", "MIU"){
  setBaseURI(_initBaseURI);
  mintVault();
  }
  
  function getPrice(uint256 quantity) public view returns (uint256){
  uint256 totalPrice = 0;
  if (publicDate <= block.timestamp) {
  for (uint256 i = 0; i < quantity; i++) {
  totalPrice += 0.06 ether;
  }
  return totalPrice;
  }
  uint256 current = totalSupply;
  for (uint256 i = 0; i < quantity; i++) {
  if (current >= 1800) {
  totalPrice += 0.06 ether;
  } else {
  totalPrice += 0.04 ether;
  }
  current++;
  }
  return totalPrice;
  }
  // public
  function mint(uint256 _mintAmount) public payable{
  require(publicDate <= block.timestamp, "Not yet");
  require(totalSupply + _mintAmount + 1 <= supply, "0" );
  require(msg.value >= getPrice(_mintAmount));
  for (uint256 i; i < _mintAmount; i++) {
  _safeMint(msg.sender, totalSupply + 1 + i);
  }
  totalSupply += _mintAmount;
  }
  function presaleMint(uint256 _mintAmount) public payable{
  require(totalSupply + _mintAmount + 1 <= supply, "0" );
  require(msg.value >= getPrice(_mintAmount));
  for (uint256 i; i < _mintAmount; i++) {
  _safeMint(msg.sender, totalSupply + 1 + i);
  }
  totalSupply += _mintAmount;
  }

  //only owner
  function gift(uint[] calldata quantity, address[] calldata recipient) public onlyOwner{
  require(quantity.length == recipient.length, "Provide quantities and recipients" );
  uint totalQuantity = 0;
  for(uint i = 0; i < quantity.length; ++i){
  totalQuantity += quantity[i];
  }
  require(totalSupply + totalQuantity + 1 <= supply, "0" );
  for(uint i = 0; i < recipient.length; ++i){
  for(uint j = 0; j < quantity[i]; ++j){
  _safeMint(recipient[i], totalSupply + 1);
	totalSupply++;
  }
  }
  }
  function withdraw() public onlyOwner {
  uint256 balance = address(this).balance;
  payable(miuDevTeam).transfer((balance * 150) / 1000);
  payable(miuFounder1).transfer((balance * 190) / 1000);
  payable(miuFounder2).transfer((balance * 190) / 1000);
  payable(miuAdvisor).transfer((balance * 100) / 1000);
  payable(miuIllustrator1).transfer((balance * 80) / 1000);
  payable(miuIllustrator2).transfer((balance * 80) / 1000);
  payable(miuCommunity1).transfer((balance * 70) / 1000);
  payable(miuCommunity2).transfer((balance * 70) / 1000);
  payable(miuDiscord).transfer((balance * 40) / 1000);
  payable(miuProjectBox).transfer((balance * 10) / 1000);
  payable(miuWfAWDonate).transfer((balance * 20) / 1000);
  }
  function setSupply(uint256 _supply) public onlyOwner {
  supply = _supply;
  }
  function setBaseURI(string memory _newBaseURI) public onlyOwner {
  baseURI = _newBaseURI;
  }
  
  //internal
  function mintVault() internal {
  for (uint256 i; i < 130; i++) {
  _safeMint(miuFounder, totalSupply + 1 + i);
  }
  totalSupply = 130;
  }
  function _baseURI() internal view override returns (string memory) {
  return baseURI;
  }
}

File 2 of 12 : IERC165.sol
// 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);
}

File 3 of 12 : ERC165.sol
// 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;
    }
}

File 4 of 12 : Strings.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant alphabet = "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] = alphabet[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }

}

File 5 of 12 : Context.sol
// 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) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

File 6 of 12 : Address.sol
// 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;
        // solhint-disable-next-line no-inline-assembly
        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");

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (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");

        // solhint-disable-next-line avoid-low-level-calls
        (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");

        // solhint-disable-next-line avoid-low-level-calls
        (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");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
        if (success) {
            return returndata;
        } else {
            // 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

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

File 7 of 12 : IERC721Metadata.sol
// 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);
}

File 8 of 12 : IERC721Enumerable.sol
// 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);
}

File 9 of 12 : IERC721Receiver.sol
// 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);
}

File 10 of 12 : IERC721.sol
// 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;
}

File 11 of 12 : ERC721.sol
// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./IERC721.sol";
import "./IERC721Receiver.sol";
import "./extensions/IERC721Metadata.sol";
import "./extensions/IERC721Enumerable.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}. 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 || ERC721.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 || ERC721.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(to).onERC721Received.selector;
            } catch (bytes memory reason) {
                if (reason.length == 0) {
                    revert("ERC721: transfer to non ERC721Receiver implementer");
                } else {
                    // solhint-disable-next-line no-inline-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` 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 { }
}

File 12 of 12 : Ownable.sol
// 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 () {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), 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 {
        emit OwnershipTransferred(_owner, address(0));
        _owner = 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");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

Settings
{
  "remappings": [],
  "optimizer": {
    "enabled": true,
    "runs": 5000
  },
  "evmVersion": "london",
  "libraries": {},
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  }
}

Contract Security Audit

Contract ABI

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ype":"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":[],"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":[],"name":"withdraw","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

0000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000002268747470733a2f2f6d69757265736375652e6e66746170692e6172742f6d6574612f000000000000000000000000000000000000000000000000000000000000

-----Decoded View---------------
Arg [0] : _initBaseURI (string): https://miurescue.nftapi.art/meta/

-----Encoded View---------------
4 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000020
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000022
Arg [2] : 68747470733a2f2f6d69757265736375652e6e66746170692e6172742f6d6574
Arg [3] : 612f000000000000000000000000000000000000000000000000000000000000


Block Transaction Difficulty Gas Used Reward
Block Uncle Number Difficulty Gas Used Reward
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.