// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;
pragma experimental ABIEncoderV2;

abstract contract DNSSEC {
    bytes public anchors;

    struct RRSetWithSignature {
        bytes rrset;
        bytes sig;
    }

    event AlgorithmUpdated(uint8 id, address addr);
    event DigestUpdated(uint8 id, address addr);

    function verifyRRSet(RRSetWithSignature[] memory input)
        external
        view
        virtual
        returns (bytes memory rrs, uint32 inception);

    function verifyRRSet(RRSetWithSignature[] memory input, uint256 now)
        public
        view
        virtual
        returns (bytes memory rrs, uint32 inception);
}