pragma solidity ^0.4.19;

import "zeppelin-solidity/contracts/ownership/Ownable.sol";

contract KYCValidations is Ownable {

    mapping(address => bytes32) pendingOwnerships;
    mapping(address => bytes32) ownerships;

    event OwnershipProcessStarted(address ownedAddress, bytes32 idHash);
    event OwnershipEstablished(address ownedAddress, bytes32 idHash);


    function addOwnership(address ownedAddress, bytes32 idHash) public onlyOwner {
        require(ownerships[ownedAddress] == 0);
        require(pendingOwnerships[ownedAddress] == 0);
        pendingOwnerships[ownedAddress] = idHash;
        emit OwnershipProcessStarted(ownedAddress, idHash);
    }

    function confirmOwnership(bytes32 idHash) public {
        require(ownerships[ownedAddress] == 0);
        require(pendingOwnerships[msg.sender] == idHash);
        pendingOwnerships[msg.sender] = 0;
        ownerships[msg.sender] = idHash;
        emit OwnershipEstablished(msg.sender, idHash);
    }

    function checkOwnership(address ownedAddress, bytes32 idHash) public view returns (bytes32) {
        return ownerships[ownedAddress];
    }

    function checkPendingOwnership(address ownedAddress, bytes32 idHash) public view returns (bytes32) {
        return pendingOwnerships[ownedAddress];
    }
}