function resolveClaim(address _lostAddress) public returns (uint256){
        Claim memory claim = claims[_lostAddress];
        require(claim.collateral != 0, "No claim found");
        require(claim.claimant == msg.sender);
        require(claim.timestamp + claimPeriod <= block.timestamp);
        address claimant = claim.claimant;
        delete claims[_lostAddress];
        claimant.transfer(claim.collateral);
        internalTransfer(_lostAddress, claimant, balanceOf(_lostAddress));
        emit ClaimResolved(_lostAddress, claimant, claim.collateral);
        return claim.collateral;
    }