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XDS - Decentralized Domain Name System

XDS is a decentralized domain name system designed to enhance user interaction with the CrossFi blockchain ecosystem by replacing complex crypto addresses with memorable .xds domain names.

What is XDS?

XDS transforms the way you interact with blockchain by converting long, complex addresses into simple, memorable names like yourname.xds. Send tokens, access websites, and interact with DApps using human-readable addresses.

Interactive Demonstration​

Key Features​

🎯 Simplified Interaction

The system replaces complex crypto addresses with easy-to-remember names in the format username.xds. This significantly reduces the risk of errors when sending transactions and makes blockchain interactions more intuitive.

🌐 Decentralized Web

Users can link their XDS names to content on IPFS, creating decentralized websites. It is also possible to associate domain names with various profiles and contact details.

🔗 Integration with DApps

The system allows readable names to be used instead of addresses when working with decentralized applications, improving convenience and security in interactions.

🔄 Name Resolution

XDS automatically converts names into various formats: Ethereum addresses, IPFS hashes, text records, etc. This enables a single domain name to serve multiple purposes.

How XDS Works​

XDS is built on three key components that work together to provide seamless domain name resolution:

📚 Registry: The Core Storage

The registry is a smart contract on the Ethereum network that stores all domain names (keys) and their associated data (values). It records the domain owner's address and a pointer to the resolver.

Key Functions:

  • Transfer ownership
  • Update records
  • Change resolvers via blockchain transactions

⚙️ Registrars: Registration Rules

Registrars define the conditions for obtaining and renewing domain names (e.g., in the ".xds" zone). Most names are registered directly, but premium names may require an auction.

Key Functions:

  • Track registration periods
  • Send renewal reminders
  • Prevent domain loss

🔍 Resolvers: Name Resolution

Resolvers convert XDS names (e.g., ivan.xds) into necessary addresses: Ethereum, IPFS hashes, or other data. Owners specify which resolver to use to link their domain to a particular resource.

Supported Records:

  • Cryptocurrency addresses
  • IPFS content hashes
  • Text data and profiles

📊 Architecture Benefits

This modular design ensures:

  • Flexibility: Different record types supported
  • Security: Owner-controlled updates
  • Scalability: Efficient resolver system
  • Decentralization: No single point of failure

Name Registration Process​

🔍 Step 1: Name Search

Users check the availability of their desired name through the XDS web interface or other compatible services. The system instantly verifies if the domain is available for registration.

XDS Use Cases​

Real-World Applications​

💸 Simplified Transactions

Instead of a long address, users can send funds to ivan.xds, reducing the risk of entering an incorrect wallet address. This is especially useful for frequent transfers without manually verifying long address strings.

🌐 Decentralized Websites

XDS names simplify content hosting on IPFS: instead of an IPFS hash, a domain name is used. Users can also link their social profiles, email, and other contact details, making identification in a decentralized environment easier.

📱 DApp Integration

DApps can accept XDS names alongside Ethereum addresses, streamlining authentication and increasing platform trust by displaying verified names instead of unreadable hex addresses.

🔄 Multi-Format Resolution

XDS automatically converts names into various formats: Ethereum addresses, IPFS hashes, text records, etc. This enables a single domain name to serve multiple purposes—from sending tokens to accessing decentralized websites.

Integration Examples​

Popular Integrations

Real-world examples of XDS integration across the blockchain ecosystem:

🔄 Trading Platforms

  • Uniswap: Allows sending tokens to XDS names, improving UX and reducing error risks
  • OpXDSea: Shows XDS names when buying or selling NFTs, increasing transparency in transactions

🔍 Infrastructure Tools

  • Etherscan: Displays transaction results in a human-readable format, making searches and analysis easier
  • Alchemy: Simplifies blockchain app development and testing by using easily memorable names instead of addresses

💼 Wallet Services

  • Argent: Assigns a unique XDS name to each user when creating a wallet, simplifying transfers and recognition

🛠️ Developer Tools

  • Ethers.js: Built-in resolution methods for efficient integration
  • Web3.js: Low-level smart contract calls for XDS support

Developer Integration​

Technical Implementation​

💾 Storage and Caching

To avoid frequent registry queries, projects with high request volumes can cache resolution results. This optimizes name handling and speeds up application response times.

📱 User Interface

Input fields and automatic XDS name resolution should be implemented to allow users to enter readable names instead of long addresses. Validation and user-friendly error messages should be provided.

⚙️ Smart Contract Updates

To support XDS names within existing logic (e.g., payment processing or custom records), smart contracts need to be adapted for registry and resolver interactions.

🛠️ Tools and Libraries

Developers can use Ethers.js (which includes built-in resolution methods) or Web3.js (via low-level smart contract calls) to efficiently integrate XDS into projects of any scale.

User Experience Features​

📝 Name Input and Resolution

Users enter an XDS name, and the application retrieves the associated address or other information in the background. This eliminates the need to manually copy and paste long character sequences.

👤 Profile Association

Applications can display XDS names instead of Ethereum addresses, improving usability and clarity. Users can link their domains to accounts or wallets for quick identification.

Domain Management

The registration interface allows users to enter desired domains, select validity periods, and pay in ETH. Owners can later renew registrations, change resolvers, and transfer domains to other accounts if needed.

XDS represents the future of blockchain user experience—transforming complex addresses into simple, memorable names that make decentralized applications as easy to use as traditional websites.