XDS
XDS is a decentralized domain name system designed to enhance user interaction with the CrossFi blockchain ecosystem.
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.
How XDS Works
XDS is built on three key components: the registry, registrars, and resolvers.
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. Owners can transfer ownership, update records, and change the resolver via blockchain transactions.
Registrars: Registration Rules and Mechanisms
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. Registrars also track registration periods and send renewal reminders to 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. Resolvers support various record types, from cryptocurrency addresses to text data.
Name Registration Process
Registering a name in XDS involves several steps to ensure secure and convenient domain usage.
XDS Use Cases
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 and Identification
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.
Interaction with DApps
DApps can accept XDS names alongside Ethereum addresses, streamlining authentication and increasing platform trust by displaying verified names instead of unreadable hex addresses.
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—from sending tokens to accessing decentralized websites.
Integrating XDS into a Project
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.
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. This requires analyzing current architecture and potential modifications.
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 to assist with incorrect input or network issues.
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 Interaction
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.
Domain Management Interface
Registering a new name involves entering the desired domain, selecting the validity period, and paying in ETH. Owners can later renew registrations, change resolvers, and transfer domains to other accounts if needed.
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.
Practical Examples and Use Cases
Uniswap: Allows sending tokens to XDS names, improving UX and reducing error risks.
Etherscan: Displays transaction results in a human-readable format, making searches and analysis easier.
Argent: Assigns a unique XDS name to each user when creating a wallet, simplifying transfers and recognition.
OpXDSea: Shows XDS names when buying or selling NFTs, increasing transparency in transactions.
Alchemy: Simplifies blockchain app development and testing by using easily memorable names instead of addresses.
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