NFT鑄造智慧合約公排系統開發詳情方案

caiayu1234發表於2023-04-12

智慧合約使用交易觸發執行,並且在每個全節點上都會被執行,如果單個節點作惡,那麼該節點的資料失效,不會影響其他節點,這讓智慧合約的執行具有一致性,且無法作惡,可以利用去中心化的特性保證業務規則的正確性。

  

  智慧合約是一種在區塊鏈上執行的自動化計算機程式,用於執行在合同條款下預定義的操作。這些合約以程式碼的形式儲存在區塊鏈上,並且可以透過區塊鏈上的節點自動執行。I88智慧合約I928系統開發8024

  

  function upgrade(TransparentUpgradeableProxy proxy,address implementation)public virtual onlyOwner{

  

  proxy.upgradeTo(implementation);

  

  }

  

  /**

  

  * dev Upgrades`proxy`to`implementation`and calls a function on the new implementation.See

  

  *{TransparentUpgradeableProxy-upgradeToAndCall}.

  

  *

  

  *Requirements:

  

  *

  

  *-This contract must be the admin of`proxy`.

  

  */

  

  function upgradeAndCall(

  

  TransparentUpgradeableProxy proxy,

  

  address implementation,

  

  bytes memory data

  

  )public payable virtual onlyOwner{

  

  proxy.upgradeToAndCall{value:msg.value}(implementation,data);

  

  }

  

  }

  

  pragma solidity 0.6.11;

  

  import"openzeppelin/contracts/access/Ownable.sol";

  

  import"./CloneFactory.sol";

  

  import"./MetaCoinClonable.sol";

  

  contract MetaCoinCloneFactory is CloneFactory,Ownable{

  

  MetaCoinClonable[]public metaCoinAddresses;

  

  event MetaCoinCreated(MetaCoinClonable metaCoin);

  

  address public libraryAddress;

  

  address private metaCoinOwner;

  

  constructor(address _metaCoinOwner)public{

  

  metaCoinOwner=_metaCoinOwner;

  

  }

  

  function setLibraryAddress(address _libraryAddress)external onlyOwner{

  

  libraryAddress=_libraryAddress;

  

  }

  

  function createMetaCoin(uint256 initialBalance)external{

  

  MetaCoinClonable metaCoin=MetaCoinClonable(

  

  createClone(libraryAddress)

  

  );

  

  metaCoin.initialize(metaCoinOwner,initialBalance);

  

  metaCoinAddresses.push(metaCoin);

  

  emit MetaCoinCreated(metaCoin);

  

  }

  

  function getMetaCoins()external view returns(MetaCoinClonable[]memory){

  

  return metaCoinAddresses;

  

  }

  

  }


來自 “ ITPUB部落格 ” ,連結:http://blog.itpub.net/69973864/viewspace-2945213/,如需轉載,請註明出處,否則將追究法律責任。

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