<aside> 💡 Web3 is accelerating and Arweave will be adopted by more developers as an infrastructure, creating a new and richer ecosystem. PermaDAO is a community of co-builders for just this purpose. Everyone involved can find a role here to contribute to the Arweave ecosystem, and any proposal or task related to Arweave can be posted here and supported by the entire community. Join PermaDAO and build Web3!
</aside>
翻译：Ruby @ Contributor of PermaDAO
审阅：Xiaosong Hu @ Contributor of PermaDAO
ENS, short for Ethereum Name Service, is a domain name service that operates on the Ethereum network. Its main function is to serve as a cross-platform Web3 username and profile for users and allows direct access to decentralized websites.
ANS, short for Arweave Name Service, is a domain name service that operates on the Arweave blockchain. After the success of the ENS model, a public blockchain should have at least a wallet, DEX, and a domain name service to form the foundational ecosystem for the blockchain.
However, ANS is not merely a simple imitation of ENS. It leverages Arweave's permanent storage feature, giving it unique characteristics in terms of domain name ownership, which can be referred to as everlasting domain names.
Vitalik has praised ENS as the most successful non-financial Ethereum application to date, likening it to a decentralized address book. Meanwhile, ANS is rising, and after the listing of the ANS token on everPay and Permaswap two months ago, we hope to provide a partial summary of it for the reference of the Arweave community.
On May 4, 2017, Alex Van de Sande and Nick Johnson from the Ethereum Foundation initiated the ENS (Ethereum Name Service) project with the aim of creating a user-friendly domain name service. ENS is analogous to the traditional relationship between IP addresses and domain names in the Domain Name System (DNS). The relationship between ENS and Ethereum addresses can be understood as follows:
| IP address | DNS | ETH address | ENS | |
|---|---|---|---|---|
| 142.250.181.46 | https://google.com | / | / | |
| Vitalik | 66.172.12.251 | https://vitalik.ca | 0xd8da6bf26964af9d7eed9e03e53415d37aa96045 | vitalik.eth |
ENS operates entirely based on smart contracts and is not subject to any centralized entity or third-party interference. The Registrar contract is responsible for recording critical information about domain name ownership, expiration dates, resolvers, etc., and is controlled by users in the form of NFTs (Non-Fungible Tokens) to ensure ownership rights. The Resolver contract is primarily responsible for translating domain names into addresses, while the Controller contract handles business logic related to domain sales, updates, and interacts with users to facilitate payment and domain acquisition through oracle price feeds.
ENS transforms human-unfriendly alphanumeric addresses into meaningful English words, significantly improving human recognition. This is the primary reason why many users are willing to spend significant amounts to purchase ENS domain names.
Besides conventional alphanumeric characters, ENS also supports complex text formats. For example, domains like 🚀🚀🚀.eth have been traded for 42 ETH.
Each ENS domain is also an NFT, fully operating on-chain. The current protocol used is ERC-721, which allows domains to be minted and traded on NFT marketplaces like OpenSea. The highest recorded sale on OpenSea is the domain paradigm.eth, sold for a staggering 420 ETH by an investment institution.
Once purchased, no one else can claim ownership or access rights to the domain, even the ENS service provider cannot revoke control of the domain in extreme cases. For example, the domain eth.link belongs to the imprisoned Ethereum developer Virgil Griffith, and even the ENS DAO itself cannot gain access to his account. In such situations, alternative solutions must be used to ensure the network's continued operation.