Gaming economies secured onchain.

// Bitfragments GameFi security layer
contract SecureLoot is ERC721, Pausable {
    mapping(bytes32 => bool) public claimedDrop;
    mapping(address => uint256) public dailyMints;

    IRiskOracle public riskOracle;
    ISessionGuard public sessionGuard;

    function claimItem(
        address player,
        bytes32 dropId,
        bytes calldata sessionProof
    ) external whenNotPaused {
        bytes32 claimHash = keccak256(abi.encode(player, dropId));

        require(!claimedDrop[claimHash], "DUPLICATE_CLAIM");
        require(dailyMints[player] < 25, "FARM_LIMIT");
        require(sessionGuard.valid(player, sessionProof), "BAD_SESSION");
        require(riskOracle.score(player) < 70, "HIGH_RISK_WALLET");

        claimedDrop[claimHash] = true;
        dailyMints[player]++;

        _safeMint(player, nextTokenId());
    }

    function emergencyPause() external onlySecurityCouncil {
        _pause(); // abnormal minting or exploit detected
    }
}