contract iNMR {

    // ERC20
    function totalSupply() external returns (uint256);
    function balanceOf(address _owner) external returns (uint256);
    function allowance(address _owner, address _spender) external returns (uint256);

    function transfer(address _to, uint256 _value) external returns (bool ok);
    function transferFrom(address _from, address _to, uint256 _value) external returns (bool ok);
    function approve(address _spender, uint256 _value) external returns (bool ok);
    function changeApproval(address _spender, uint256 _oldValue, uint256 _newValue) external returns (bool ok);

    /// @dev Behavior has changed to match OpenZeppelin's `ERC20Burnable.burn(uint256 amount)`
    /// @dev Destoys `amount` tokens from `msg.sender`, reducing the total supply.
    ///
    /// Emits a `Transfer` event with `to` set to the zero address.
    /// Requirements:
    /// - `account` must have at least `amount` tokens.
    function mint(uint256 _value) external returns (bool ok);

    /// @dev Behavior has changed to match OpenZeppelin's `ERC20Burnable.burnFrom(address account, uint256 amount)`
    /// @dev Destoys `amount` tokens from `account`.`amount` is then deducted
    /// from the caller's allowance.
    ///
    /// Emits an `Approval` event indicating the updated allowance.
    /// Emits a `Transfer` event with `to` set to the zero address.
    ///
    /// Requirements:
    /// - `account` must have at least `amount` tokens.
    /// - `account` must have approved `msg.sender` with allowance of at least `amount` tokens.
    function numeraiTransfer(address _to, uint256 _value) external returns (bool ok);
}
/// @title iNMR
/// @author Stephane Gosselin (@thegostep) for Numerai Inc
/// @dev Security contact: security@numer.ai
/// @dev Version: 1.2.0
function mint(uint256 _value) external returns (bool ok);
/// @dev Behavior has changed to match OpenZeppelin's `ERC20Burnable.burn(uint256 amount)`
/// @dev Destoys `amount` tokens from `msg.sender`, reducing the total supply.
///
/// Emits a `Transfer` event with `to` set to the zero address.
/// Requirements:
/// - `account` must have at least `amount` tokens.