Introduction
The Ethereum Name Service (ENS) has expanded beyond the Ethereum mainnet to several compatible chains, and the Gnosis Chain is among the most active ecosystems for deploying ENS-based naming infrastructure. Getting started with ENS on Gnosis requires understanding a few foundational differences between the mainnet deployment and the sidechain environment. This article outlines the core concepts, technical prerequisites, and practical steps that anyone evaluating ENS on Gnosis should know before proceeding.
Understanding ENS on Gnosis: Architecture and Scope
ENS is a decentralized naming system that maps human-readable names to machine-readable identifiers such as Ethereum addresses, content hashes, and metadata. On the Ethereum mainnet, the ENS protocol operates through a set of smart contracts that manage registration, resolution, and renewal. When deployed on the Gnosis Chain, the same core logic applies, but the underlying infrastructure relies on Gnosis’s consensus mechanism and gas economics.
The key difference is that Gnosis Chain uses a proof-of-stake system with lower transaction fees than the mainnet. This makes ENS operations on Gnosis significantly cheaper, particularly for bulk registrations, DNS-based imports, and subdomain management. However, users should note that ENS names on Gnosis are not automatically mirrored on the Ethereum mainnet unless explicitly bridged. Each name exists within the registry of the chain where it was registered.
For those who need cross-chain functionality, an Ethereum Domain Authorization mechanism can be configured to allow a single ENS name to resolve on multiple chains. This setup requires careful delegation of resolution permissions, typically managed through a dedicated resolver contract that supports multi-chain lookups.
It is also important to understand that the Gnosis Chain ENS registry is maintained by a separate set of governance contracts. While the naming convention (e.g., example.eth) is identical, the registry root is controlled by a different multisig. This means that recovery and administrative actions for names on Gnosis follow the governance rules of the Gnosis ecosystem, not mainnet ENS DAO.
Prerequisites: Wallet and Tooling Requirements
Before registering or managing an ENS name on Gnosis, a compatible Web3 wallet is necessary. Most wallet providers—including MetaMask, WalletConnect, and Gnosis Safe—support the Gnosis Chain natively. Users must add the Gnosis Chain network to their wallet settings manually if it is not preconfigured. The network parameters are: RPC URL (https://rpc.gnosischain.com), chain ID (100), symbol (xDAI), and block explorer (https://gnosisscan.io).
Beyond wallet configuration, users need xDAI for transaction fees. xDAI is the native gas token of the Gnosis Chain and can be obtained through several methods: bridging DAI from Ethereum mainnet, purchasing directly on centralized exchanges that list xDAI, or using a cross-chain bridge service. Without a sufficient xDAI balance, registration transactions will fail.
For advanced users who intend to manage subdomains or set up custom resolvers, familiarity with smart contract interaction tools (such as Remix, Hardhat, or Foundry) is beneficial. The Gnosis Chain supports all standard Ethereum developer tooling because it is EVM-compatible. This means that existing ENS libraries (e.g., ethers.js, web3.js) work with minimal configuration changes—only the RPC endpoint and chain ID need adjustment.
Registration Process: Step-by-Step on Gnosis
Registering an ENS name on Gnosis follows a similar flow to mainnet, but the specific interface and costs differ. Several front-end dApps, most notably the ENS app itself when connected to Gnosis Chain, provide a registration interface. Alternatively, some third-party platforms offer dedicated Gnosis registration pages.
The process generally involves three steps:
- Check availability: The ENS app or a smart contract call verifies that the desired name is not already registered and that the name conforms to ENS standards (e.g., valid characters, minimum length).
- Commit and reveal: The registrant first submits a commitment hash that includes the name and a random secret. This step prevents front-running. After a minimum wait time (typically one minute on Gnosis, compared to five on mainnet), the registrant reveals the commitment and completes the registration transaction.
- Set resolver and records: Once registered, the name requires a resolver contract address to be set. The resolver handles translation of the name to addresses, content hashes, or other records. Users can choose the public resolver deployed on Gnosis or deploy a custom resolver.
Gas costs on Gnosis are dramatically lower; a complete registration typically costs less than $0.10 in xDAI. However, users should consider that yearly renewal fees are denominated in xDAI as well, and these fees go to the Gnosis ENS treasury rather than mainnet ENS DAO.
For those requiring complex name management across chains, defining an ENS delegation strategy is essential. This involves specifying which addresses or contracts have authority to update resolver settings on each chain, ensuring that a single administrative key can control resolution on both Gnosis and mainnet without manual intervention.
Resolving Names: How Applications Read ENS on Gnosis
Resolution is the process by which an application or wallet translates an ENS name to an address. On Gnosis, any application that supports ENS resolution out of the box can resolve names by querying the Gnosis ENS registry directly. However, many popular dApps default to the mainnet registry. Users may need to explicitly configure their dApp or wallet to use the Gnosis resolver.
For developers building applications on Gnosis, integration is straightforward. The standard ENS resolution workflow looks like this: the app calls the resolver() function on the ENS registry contract (deployed at a known address on Gnosis), obtains the resolver address for the name, then calls the addr() function on that resolver to get the Ethereum address. The same pattern applies to other record types such as text records or content hashes.
It is worth noting that some names on Gnosis may have different resolver addresses than their mainnet counterparts. This flexibility allows names to resolve to different addresses on different chains—useful for projects that deploy separate contracts on each chain. However, it can also cause confusion if wallet software caches resolution results from the mainnet.
To mitigate such issues, some middleware services and indexers offer unified lookup that checks multiple chains. For instance, the official ENS subgraph on The Graph provides indexed data for both mainnet and Gnosis. Using such tools, a dApp can determine the correct resolution for any chain by querying the subgraph's Gnosis endpoint.
Management and Renewal: Ongoing Considerations
Once an ENS name is registered on Gnosis, it must be managed with the same care as a mainnet name, but with a few additional nuances. The registrar contract on Gnosis enforces a registration period (typically one year by default), after which the name must be renewed. Renewal transactions incur gas in xDAI and can be executed by the owner or a delegate.
One important feature available on Gnosis is the ability to set a reverse resolution record. This allows a name to be associated with an address such that when users look up that address, the name appears as a display name. Reverse resolution is optional but recommended for identity verification within the Gnosis ecosystem.
Subdomain management is also a common use case. A name owner can create subdomains on Gnosis by calling the setSubnodeRecord function on the registry. Each subdomain can have its own resolver and records, enabling multi-tenant naming schemes for organizations or DAOs. The low cost on Gnosis makes this especially practical for large-scale subdomain deployments, such as issuing unique usernames for a dApp.
Finally, governance participation is different on Gnosis. While mainnet ENS holders can vote on ENS governance proposals, names registered solely on Gnosis do not automatically confer voting rights in the mainnet ENS DAO. Some projects have implemented bridged voting mechanisms, but as of this writing, no universal standard exists. Users should verify whether their specific use case requires governance participation and, if so, plan to bridge their name or register a parallel name on mainnet.
Security and Best Practices
Security considerations for ENS on Gnosis are largely analogous to those on mainnet, but the lower value of xDAI and the smaller user base can create false senses of safety. Because transaction costs are negligible, attackers may attempt to set traps—such as deploying fake resolver contracts that consume the registrant's funds. Users should always verify that the resolver contract they interact with is the official public resolver or a well-audited alternative.
Additionally, because the Gnosis Chain has not yet undergone the same level of smart contract audits as the mainnet ENS codebase, users should be cautious when using third-party tools that claim to offer ENS delegation or management. It is advisable to rely on the official ENS app or well-known interfaces that explicitly list support for Gnosis Chain.
Wallet security also extends to the xDAI balance. Since xDAI can be freely transferred and its value can fluctuate with DAI, users must monitor their balances to ensure they can afford renewal fees. Some users delegate renewal responsibilities to a secure or smart contract wallet that can schedule payments, reducing the risk of accidental name expiration.
Overall, getting started with ENS on Gnosis is a straightforward process for anyone familiar with Ethereum-based naming systems. The primary differences lie in the gas economics, chain-specific governance, and the need for explicit cross-chain resolution configuration. By understanding these fundamentals, users can leverage the Gnosis Chain to register and manage ENS names efficiently while maintaining the same level of utility and interoperability that ENS provides on the mainnet.