/

SMART CONTRACT on

c
0x096BBfB78311227b805c968b070a81D358c13379
undefined: Staking Helper

Wonderland.money: Staking Helper Contract

Last Transaction

0x8209ba983f124c4e11505a82f135833fe58f5dd58af289e762fba7891fd7a44d
From
0x38e18c9Ec6ca14b4721273152947Ca9389D1A6Ef
To
Wonderland.money: Staking Helper
a few seconds
Tue, 30 Nov 2021 00:00:56 GMT
0.00AVAX

AVAX balance

0

5 Tokens

Total estimated value

3,415,107.53USD
Amount Estimated value
Hypothermia DAO (3,3) 100,000,000 HP 3,352,396.76USD
TIME Token 7.961383123 TIME 61,474.08USD
MEMO Token 0.433065579 MEMO 885.33USD
SPELL Token 26,191.136468651 SPELL 351.36USD
NFT Lottery Ticket 2 NFTL 0.00USD

Contract Properties

Language
Solidity
Compiler Version
v0.7.5+commit.eb77ed08
Source Code
Available and Matching

Compiler settings

{
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "outputSelection": {
    "StakingHelper.sol": {
      "StakingHelper": [
        "*"
      ]
    }
  }
}

ABI

[
  {
    "inputs": [
      {
        "internalType": "address",
        "name": "_staking",
        "type": "address"
      },
      {
        "internalType": "address",
        "name": "_Time",
        "type": "address"
      }
    ],
    "stateMutability": "nonpayable",
    "type": "constructor"
  },
  {
    "inputs": [],
    "name": "Time",
    "outputs": [
      {
        "internalType": "address",
        "name": "",
        "type": "address"
      }
    ],
    "stateMutability": "view",
    "type": "function"
  },
  {
    "inputs": [
      {
        "internalType": "uint256",
        "name": "_amount",
        "type": "uint256"
      },
      {
        "internalType": "address",
        "name": "recipient",
        "type": "address"
      }
    ],
    "name": "stake",
    "outputs": [],
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "inputs": [],
    "name": "staking",
    "outputs": [
      {
        "internalType": "address",
        "name": "",
        "type": "address"
      }
    ],
    "stateMutability": "view",
    "type": "function"
  }
]

Contract Source Code

StakingHelper.sol

StakingHelper.sol

// SPDX-License-Identifier: AGPL-3.0-or-later
pragma solidity 0.7.5;


interface IERC20 {
    function decimals() external view returns (uint8);
  /**
   * @dev Returns the amount of tokens in existence.
   */
  function totalSupply() external view returns (uint256);

  /**
   * @dev Returns the amount of tokens owned by `account`.
   */
  function balanceOf(address account) external view returns (uint256);

  /**
   * @dev Moves `amount` tokens from the caller's account to `recipient`.
   *
   * Returns a boolean value indicating whether the operation succeeded.
   *
   * Emits a {Transfer} event.
   */
  function transfer(address recipient, uint256 amount) external returns (bool);

  /**
   * @dev Returns the remaining number of tokens that `spender` will be
   * allowed to spend on behalf of `owner` through {transferFrom}. This is
   * zero by default.
   *
   * This value changes when {approve} or {transferFrom} are called.
   */
  function allowance(address owner, address spender) external view returns (uint256);

  /**
   * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
   *
   * Returns a boolean value indicating whether the operation succeeded.
   *
   * IMPORTANT: Beware that changing an allowance with this method brings the risk
   * that someone may use both the old and the new allowance by unfortunate
   * transaction ordering. One possible solution to mitigate this race
   * condition is to first reduce the spender's allowance to 0 and set the
   * desired value afterwards:
   * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
   *
   * Emits an {Approval} event.
   */
  function approve(address spender, uint256 amount) external returns (bool);

  /**
   * @dev Moves `amount` tokens from `sender` to `recipient` using the
   * allowance mechanism. `amount` is then deducted from the caller's
   * allowance.
   *
   * Returns a boolean value indicating whether the operation succeeded.
   *
   * Emits a {Transfer} event.
   */
  function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);

  /**
   * @dev Emitted when `value` tokens are moved from one account (`from`) to
   * another (`to`).
   *
   * Note that `value` may be zero.
   */
  event Transfer(address indexed from, address indexed to, uint256 value);

  /**
   * @dev Emitted when the allowance of a `spender` for an `owner` is set by
   * a call to {approve}. `value` is the new allowance.
   */
  event Approval(address indexed owner, address indexed spender, uint256 value);
}

interface IStaking {
    function stake( uint _amount, address _recipient ) external returns ( bool );
    function claim( address _recipient ) external;
}

contract StakingHelper {

    address public immutable staking;
    address public immutable Time;

    constructor ( address _staking, address _Time ) {
        require( _staking != address(0) );
        staking = _staking;
        require( _Time != address(0) );
        Time = _Time;
    }

    function stake( uint _amount, address recipient ) external {
        IERC20( Time ).transferFrom( msg.sender, address(this), _amount );
        IERC20( Time ).approve( staking, _amount );
        IStaking( staking ).stake( _amount, recipient );
        IStaking( staking ).claim( recipient );
    }
}

Contract Bytecode

Bytecode

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