Smart Contracts

/// @dev Returns true if the address is registered as a verified human.
/// Checks both V2 registrations and V1 via Fork Module.
function isHuman(address _account) external view returns (bool);

/// @dev Returns the humanityId bound to an address.
/// Returns bytes20(0) if the address is not registered.
function humanityOf(address _account) external view returns (bytes20);

/// @dev Returns the address currently bound to a humanityId.
/// Returns address(0) if the humanityId is not claimed.
function boundTo(bytes20 _humanityId) external view returns (address);

/// @dev Returns true if the humanityId is currently claimed by any address.
function isClaimed(bytes20 _humanityId) external view returns (bool);

/// @dev Submits a new registration claim.
/// Requires payment of the registration deposit.
function claimHumanity(bytes20 _humanityId, string calldata _evidence) external payable;

/// @dev Vouches for a pending registration.
/// Voucher must be a registered human.
function vouch(address _claimer, bytes20 _humanityId) external;

/// @dev Challenges a pending or existing registration.
/// Creates a dispute in Kleros Court.
function challengeRequest(
    bytes20 _humanityId,
    uint256 _reason,
    string calldata _evidence
) external payable;

interface ICrossChainProofOfHumanity {
    function isHuman(address _account) external view returns (bool);
    function isClaimed(bytes20 _humanityId) external view returns (bool);
    function humanityOf(address _account) external view returns (bytes20);
    function boundTo(bytes20 _humanityId) external view returns (address);
}

/// @dev Emitted when a new registration claim is submitted.
event ClaimRequest(address indexed _requester, bytes20 indexed _humanityId);

/// @dev Emitted when a claim is challenged.
event ChallengePeriodRestart(
    bytes20 indexed _humanityId,
    uint256 indexed _requestId,
    uint256 _challengeId
);

/// @dev Emitted when a registration is confirmed after the challenge period.
event HumanityClaimed(bytes20 indexed _humanityId, address indexed _owner);

/// @dev Emitted when a registered human is removed (revocation or expiry).
event HumanityRevoked(bytes20 indexed _humanityId, address indexed _owner);