The Bouncer for Kids: Identity as a Game

The concept of identity on the blockchain can often seem opaque. For the D-Library ecosystem, the Bouncer.sol contract is engineered to serve as an accessible, secure gateway that bridges institutional-grade cryptography with an engaging onboarding experience. Rather than requiring personally identifiable information (PII) or real-world names, the protocol employs deterministic algorithms to generate a Digital Spirit Name.

This transforms identity management into a seamless, gamified process while preserving absolute anonymity. Notably, the underlying vocabulary (the adjective and verb combinations) is strictly fixed within the smart contract. While there are potential avenues to expand these lists, any future upgrades will require a dedicated, funded project lifecycle—ensuring that the vocabulary remains immutable unless formally governed and financed by the community or an institutional entity.

D-CODE Sovereign Licence

Original SourceCode

The following smart contract source code is published under the D-CODE Licence. This license enforces strict Open Code availability. Unlike Open Source, Open Code means the code is entirely public and auditable for maximum transparency, but it explicitly prohibits unauthorized modifications, derivations, or forks of the certified logic. It requires clear attribution to POND Enterprise. Furthermore, the implementation has been officially D-Safe Certified by the DSafe.US auditing framework.

/**
 * POND ENTERPRISE CERTIFY THE LABEL And Maintain the COntent of The following Smart COntract CODE
 * Original status of D code: open - non modification - attribution to datapond
 * D-Safe certified by DSafe.US
 */
// File: contracts/Bouncer.sol
pragma solidity ^0.8.24;

import "./IBouncerStorage.sol";
import {Identity} from "./Identity.sol";
import {Ownable} from "./Ownable.sol";
import {ErrorLibrary} from "./ErrorLibrary.sol";

abstract contract Bouncer is Ownable {
    IBouncerStorage public bouncerStorage;

    constructor() {}

    function setStorage(address storageAddr) public onlyOwner {
        if (storageAddr == address(0)) revert ErrorLibrary.EmptyAddress();
        bouncerStorage = IBouncerStorage(storageAddr);
    }

    function userInfos(address addr) public view returns (string memory username, uint16 locationCode, uint32 newUserId) {
        return bouncerStorage.userInfos(addr);
    }

    function usernameToUserId(string calldata username) public view returns (uint32) {
        return bouncerStorage.usernameToUserId(username);
    }

    function hasAccount(address addr) public view returns (bool ok) {
        return bouncerStorage.hasAccount(addr);
    }

    function unregister() public {
        if (!bouncerStorage.hasAccount(msg.sender)) revert ErrorLibrary.ErrNoAccount();
        bouncerStorage.unregister(msg.sender);
    }
}

This code is published under the D-CODE Licence: Open Source, Non-modification, Attribution to DataPond. It is D-Safe Certified by DSafe.US.

Identity.sol (The Name Maker)

// Simplified example of the Name Generator
function generateName(uint256 userId) public pure returns (string memory) {
    string[4] memory adjectives = ["Happy", "Brave", "Fast", "Shiny"];
    string[4] memory verbs = ["Panda", "Tiger", "Eagle", "Dolphin"];
    return string(abi.encodePacked(adjectives[userId % 4], verbs[userId % 4]));
}