Ethereum Name Service (ENS)
The Ethereum Name Service (ENS) is a distributed, open, and extensible naming system built on the Ethereum blockchain. Its primary function is to convert human-readable names like 'alice.eth' into machine-readable identifiers such as Ethereum addresses, other cryptocurrency addresses, content hashes, and metadata. This functionality simplifies the process of interacting with Ethereum addresses, making blockchain technology more accessible to users.
The architecture and function of ENS
ENS operates similarly to the Domain Name System (DNS) used on the internet but utilizes the unique capabilities and constraints of the Ethereum blockchain. It manages a system of dot-separated hierarchical names called domains. The owner of a domain has complete control over its subdomains, allowing for extensive customization and management.
| Ticker | ENS |
| Category | Governance |
| Website | https://ens.domains/ |
| @ensdomains | |
| Contract Addresses | |
|---|---|
| ethereum | 0xc1...72 Copied! |
Domains and subdomains
Top-level domains in ENS, such as '.eth' or '.test', are managed by smart contracts known as registrars. These registrars establish the rules for allocating their subdomains. Individuals can obtain ownership of a domain by adhering to the rules set by these registrars. This framework enables a flexible and user-driven domain management system, where domain owners can create and configure subdomains as they see fit. For example, owning 'alice.eth' allows the creation of 'pay.alice.eth', with full control over its settings.
Reverse resolution
ENS also supports reverse resolution, which links metadata, such as canonical names or interface descriptions, to Ethereum addresses. This feature enhances the user experience by providing additional context and information about the addresses, making transactions and interactions more intuitive.
Integration with existing systems
ENS is not only focused on creating a new naming standard but also on integrating with existing systems like DNS. Users who already own DNS names can import them into ENS, broadening the utility and reach of ENS within the broader internet naming ecosystem.
Deployment and usage
ENS is deployed on the Ethereum main network and several test networks. This multi-network deployment ensures versatility and accessibility across different Ethereum environments. When using libraries such as the ensjs JavaScript library or various end-user applications, the network being interacted with is automatically detected, and the corresponding ENS deployment is utilized. This seamless integration highlights ENS's adaptability to different blockchain environments.