on.eth Launches Canonical Chain Registry, Bringing Cross-Network Identity to ENS - Crypto Economy

TL;DR

• on.eth introduces a canonical ENS-native registry for chains and metadata, replacing scattered GitHub and app-specific mappings with an on-chain source of truth.
• With ERC-7828, ENS says the registry enables interoperable names like vitalik.eth@base, allowing wallets and apps to resolve cross-network identities through standard ENS flows.
• The system assigns each chain an on.eth subdomain, uses metadata records, and keeps governance with the ENS DAO while operators manage their own chain records.

What ENS launched this week is bigger than a naming tweak, because on.eth turns chain identity into shared infrastructure. The system introduces a canonical, ENS-native registry for blockchain networks and their metadata, covering chains such as Base, Arbitrum and Ethereum. That matters because chain resolution data has often lived in GitHub repositories or app-specific mappings, leaving no single shared source of truth. By moving metadata on-chain inside ENS, the project aims to replace scattered coordination with a verifiable naming layer that applications can query. It reads like an attempt to standardize fragmentation before it worsens.

A registry built to make cross-network names actually usable

The most immediate consequence is a cleaner path toward human-readable names across multiple chains. ENS says on.eth works with ERC-7828 to support interoperable names in the format @, such as vitalik.eth@base. Rather than inventing a separate naming system, the design extends existing ENS mental models and leaves the complexity to the resolution flow. A wallet or application can separate the ENS name from the chain suffix, resolve both through ENS, and then combine the results into a single ERC-7930 Interoperable Address tied to a specific execution environment. That is the product promise in simplest form.


Under the hood, the registry is designed as native ENS plumbing rather than a bolt-on database. Each chain receives a subdomain like zksync.on.eth, optimism.on.eth or ethereum.on.eth, and those names resolve through the on.eth Chain Resolver, which acts as both resolver and registry. Chain metadata is stored using standard ENS record types, including text records and binary data records. Forward resolution uses the ERC-7930 Interoperable Address under the interoperable-address key, while reverse.on.eth supports reverse resolution back to a human-readable chain label for clients. That architecture keeps everything inside familiar ENS flows for developers across wallets everywhere.

Just as important, ENS is framing on.eth as neutral coordination infrastructure, not private control over chain naming. The namespace emerged from interoperability discussions, then moved through an ENS DAO proposal and vote that kept ownership of on.eth with the DAO itself. Operational management will ultimately sit with a dedicated multisig, while control over a chain’s metadata is intended to be handed to the relevant chain operator. In practical terms, ENS is trying to reduce hardcoded mappings, improve UX across networks, and position itself as the registry layer for interoperable execution environments. That governance pitch matters.