pragma solidity >=0.6.0 <0.8.0;

interface ILinkdropCommon {

    function initialize
    (
        address _owner,
        address payable _linkdropMaster,
        uint _version,
        uint _chainId
    )
    external returns (bool);

    function isClaimedLink(address _linkId) external view returns (bool);
    function isCanceledLink(address _linkId) external view returns (bool);
    function paused() external view returns (bool);
    function cancel(address _linkId) external  returns (bool);
    function withdraw() external returns (bool);
    function pause() external returns (bool);
    function unpause() external returns (bool);
    function addSigner(address _linkdropSigner) external payable returns (bool);
    function removeSigner(address _linkdropSigner) external returns (bool);
    function destroy() external;
    function getMasterCopyVersion() external view returns (uint);
    function verifyReceiverSignature( address _linkId,
                                      address _receiver,
                                      bytes calldata _signature
                                      )  external view returns (bool);
    receive() external payable;

}