Contract

Contract Source Code (Solidity)

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Outline

• interface IERC20
•    - function decimals()
•    - function totalSupply()
•    - function balanceOf(address account)
•    - function transfer(address recipient, ...
•    - function allowance(address owner, add ...
•    - function approve(address spender, uin ...
•    - function transferFrom(address sender, ...
• interface IStaking
•    - function stake( uint _amount, address ...
•    - function claim( address _recipient )
•  contract StakingHelper *
•    - function stake( uint _amount )

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/**
 *Submitted for verification at Etherscan.io on 2021-12-17
*/

// 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 BTRFLY;

    constructor ( address _staking, address _BTRFLY ) {
        require( _staking != address(0) );
        staking = _staking;
        require( _BTRFLY != address(0) );
        BTRFLY = _BTRFLY;
    }

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

• No Contract Security Audit Submitted- Submit Audit Here

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

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000000000000000000000000bde4dfb0dbb0dd8833efb6c5bd0ce048c852c487000000000000000000000000c0d4ceb216b3ba9c3701b291766fdcba977cec3a

-----Decoded View---------------
Arg [0] : _staking (address): 0xBdE4Dfb0dbb0Dd8833eFb6C5BD0Ce048C852C487
Arg [1] : _BTRFLY (address): 0xC0d4Ceb216B3BA9C3701B291766fDCbA977ceC3A

-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 000000000000000000000000bde4dfb0dbb0dd8833efb6c5bd0ce048c852c487
Arg [1] : 000000000000000000000000c0d4ceb216b3ba9c3701b291766fdcba977cec3a

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ipfs://9f144938bac0ca01b9c6a3645f0d77aa20ad573b386174a80952a6a854f4971c