onchain-id/contracts/storage/Storage.sol

// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.17;
import "./Structs.sol";

contract Storage is Structs {
    // nonce used by the execute/approve function
    uint256 internal _executionNonce;

    // keys as defined by IERC734
    mapping(bytes32 => Key) internal _keys;

    // keys for a given purpose
    // purpose 1 = MANAGEMENT
    // purpose 2 = ACTION
    // purpose 3 = CLAIM
    mapping(uint256 => bytes32[]) internal _keysByPurpose;

    // execution data
    mapping(uint256 => Execution) internal _executions;

    // claims held by the ONCHAINID
    mapping(bytes32 => Claim) internal _claims;

    // array of claims for a given topic
    mapping(uint256 => bytes32[]) internal _claimsByTopic;

    // status on initialization
    bool internal _initialized = false;

    // status on potential interactions with the contract
    bool internal _canInteract = false;

    /**
     * @dev This empty reserved space is put in place to allow future versions to add new
     * variables without shifting down storage in the inheritance chain.
     */
    uint256[49] private __gap;
}