contract CryptonomicaVerification {

    /**
    * @param _address The address to check
    * @return 0 if key certificate is not revoked, or Unix time of revocation
    */
    function revokedOn(address _address) external view returns (uint unixTime);

    /**
    * @param _address The address to check
    * @return Unix time, if not zero and time is later than now - identity verified
    */
    function keyCertificateValidUntil(address _address) external view returns (uint unixTime);
}
/**
 * @title Cryptonomica verification smart contract
 * dev: Contract that provides identity verification information for given ETH address
 *      see: https://www.cryptonomica.net/#!/verifyEthAddress/
 */
function revokedOn(address _address) external view returns (uint unixTime);

/**
 * @param _address The address to check
 * @return 0 if key certificate is not revoked, or Unix time of revocation
 */