账户
0x2b...26dc
0x2B...26DC

0x2B...26DC

$500
此合同的源代码已经过验证!
合同元数据
编译器
0.8.3+commit.8d00100c
语言
Solidity
合同源代码
文件 1 的 1:CTIS.sol
// SPDX-License-Identifier: MIT
pragma solidity 0.8.3;
interface IERC20 {
    function balanceOf(address account) external view returns (uint256);
    function transfer(address recipient, uint256 amount) external returns (bool);
    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
}
contract Staking {
    address public owner;
    IERC20 public TKN;
    
    uint256[] public periods = [30 days, 90 days, 150 days];
    uint256[] public rates = [106, 121, 140];
    uint256 public limit = 20000000000000000000000000;
    uint256 public finish_timestamp = 1633046400; // 00:00 1 Oct 2021 UTC
    
    struct Stake {
        uint8 class;
        uint8 cycle;
        uint256 initialAmount;
        uint256 finalAmount;
        uint256 timestamp;
    }
    
    mapping(address => Stake) public stakeOf;
    
    event Staked(address sender, uint8 class, uint256 amount, uint256 finalAmount);
    event Prolonged(address sender, uint8 class, uint8 cycle, uint256 newAmount, uint256 newFinalAmount);
    event Unstaked(address sender, uint8 class, uint8 cycle, uint256 amount);
    
    function stake(uint8 _class, uint256 _amount) public {
        require(_class < 3 && _amount >= 10000000000000000000); // data valid
        require(stakeOf[msg.sender].cycle == 0); // not staking currently
        require(finish_timestamp > block.timestamp + periods[_class]); // not staking in the end of program
        uint256 _finalAmount = _amount * rates[_class] / 100;
        limit -= _finalAmount - _amount;
        require(TKN.transferFrom(msg.sender, address(this), _amount));
        stakeOf[msg.sender] = Stake(_class, 1, _amount, _finalAmount, block.timestamp);
        emit Staked(msg.sender, _class, _amount, _finalAmount);
    }
    
    function prolong() public {
        Stake storage _s = stakeOf[msg.sender];
        require(_s.cycle > 0); // staking currently
        require(block.timestamp >= _s.timestamp + periods[_s.class]); // staking period finished
        require(finish_timestamp > block.timestamp + periods[_s.class]); // not prolonging in the end of program
        uint256 _newFinalAmount = _s.finalAmount * rates[_s.class] / 100;
        limit -= _newFinalAmount - _s.finalAmount;
        _s.timestamp = block.timestamp;
        _s.cycle++;
        emit Prolonged(msg.sender, _s.class, _s.cycle, _s.finalAmount, _newFinalAmount);
        _s.finalAmount = _newFinalAmount;
    }

    function unstake() public {
        Stake storage _s = stakeOf[msg.sender];
        require(_s.cycle > 0); // staking currently
        require(block.timestamp >= _s.timestamp + periods[_s.class]); // staking period finished
        require(TKN.transfer(msg.sender, _s.finalAmount));
        emit Unstaked(msg.sender, _s.class, _s.cycle, _s.finalAmount);
        delete stakeOf[msg.sender];
    }
    
    function transferOwnership(address _owner) public {
        require(msg.sender == owner);
        owner = _owner;
    }
    
    function drain(address _recipient) public {
        require(msg.sender == owner);
        require(block.timestamp > finish_timestamp); // after 1st Oct
        require(TKN.transfer(_recipient, limit));
        limit = 0;
    }
    
    function drainFull(address _recipient) public {
        require(msg.sender == owner);
        require(block.timestamp > finish_timestamp + 31 days); // After 1st Nov
        uint256 _amount = TKN.balanceOf(address(this));
        require(TKN.transfer(_recipient, _amount));
        limit = 0;
    }
    
    constructor(IERC20 _TKN) {
        owner = msg.sender;
        TKN = _TKN;
    }
}
设置
{
  "compilationTarget": {
    "CTIS.sol": "Staking"
  },
  "evmVersion": "istanbul",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "remappings": []
}
ABI
[{"inputs":[{"internalType":"contract IERC20","name":"_TKN","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"sender","type":"address"},{"indexed":false,"internalType":"uint8","name":"class","type":"uint8"},{"indexed":false,"internalType":"uint8","name":"cycle","type":"uint8"},{"indexed":false,"internalType":"uint256","name":"newAmount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"newFinalAmount","type":"uint256"}],"name":"Prolonged","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"sender","type":"address"},{"indexed":false,"internalType":"uint8","name":"class","type":"uint8"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"finalAmount","type":"uint256"}],"name":"Staked","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"sender","type":"address"},{"indexed":false,"internalType":"uint8","name":"class","type":"uint8"},{"indexed":false,"internalType":"uint8","name":"cycle","type":"uint8"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Unstaked","type":"event"},{"inputs":[],"name":"TKN","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_recipient","type":"address"}],"name":"drain","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_recipient","type":"address"}],"name":"drainFull","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"finish_timestamp","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"limit","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"periods","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"prolong","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"rates","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint8","name":"_class","type":"uint8"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"stake","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"stakeOf","outputs":[{"internalType":"uint8","name":"class","type":"uint8"},{"internalType":"uint8","name":"cycle","type":"uint8"},{"internalType":"uint256","name":"initialAmount","type":"uint256"},{"internalType":"uint256","name":"finalAmount","type":"uint256"},{"internalType":"uint256","name":"timestamp","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_owner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"unstake","outputs":[],"stateMutability":"nonpayable","type":"function"}]