Disclaimer: The following blog is a suggestion from the Account Abstraction team. Content may not imply consensus views, EF is a broad organization that strengthens Ethereum by including and beyond a healthy diversity of opinions across the protocol.
From Ethereum’s early days, its promise to be a global, permissionless, and censorship-resistant computing platform has always been bold. Today that promise is more alive than ever. Ethereum has expanded through rollups with abundant block space and low transaction costs. Now the challenge is not only throughput; Seamless user experience Beyond the multi-chain horizon.
What if we all had L2? It felt like one unified Ethereum.?
There are no bridges to think about, no chain names to recognize, and no fragmented balances or assets.
That is the vision of . EIL (Ethereum Interoperability Layer): Makes Ethereum feel like a chain again, while minimizing trust and maintaining a decentralized basis, which is what we all care about.
EIL makes Ethereum’s rollup feel like a single unified chain by allowing users to sign once for cross-chain transactions without adding new trust assumptions. Built on the principles of ERC-4337 account abstraction and the Trustless Manifesto, users initiate and resolve inter-L2 operations directly from their wallets without going through an intermediary or resolver. EIL maintains Ethereum’s core guarantees of self-archiving, censorship resistance, disintermediation, and verifiable on-chain execution. This new account-based interoperability layer unifies Ethereum’s fragmented L2 ecosystem under Ethereum’s own security model.
The Problem: Fragmentation at Scale
The L2 chain significantly improves throughput and cost efficiency. But they introduce a new kind of complexity for users and wallets.
- Which chain are my tokens on?
- How do I move tokens from Arbitrum → Base → Scroll → Linea?
- Should I trust a third-party bridge or repeater?
- Does my wallet or Dapp need to manually integrate every new chain?
From a user perspective, the results are small. Ethereum and more Multiple individual Ethereum. You’re not just transacting, you’re managing the chain. This introduces friction, cognitive overhead, increases the risk of censorship, and often exposes bridges, relayers, solvers, etc. to additional trust assumptions.
Vision: Many L2s, One Ethereum
Instead, imagine this:
Open your wallet, select your asset and address, and then let go.
We know behind the scenes which chain your wallet is on and how to transfer your assets.
Mint NFTs, move tokens, and trade assets. It doesn’t matter which rollup you or the other person is using or where your Dapp is deployed.
New networks join the ecosystem and wallet. just works There are no custom integrations and no dependency on off-chain operators.
This is EIL. It’s about Wallet-centered multichain UX: The wallet becomes a universal window into the Ethereum ecosystem, and the network feels like one seamless experience rather than a patchwork of islands.
In a sense, EIL applies to Ethereum just as it did to HTTP in the early Internet.
Before HTTP, users could connect to individual servers, but could not seamlessly combine them into a single flow.
HTTP unifies the experience, allowing browsers to easily pass through servers.
EIL aims to do the same for rollups on Ethereum. In other words, bringing Ethereum into the “web age” where wallets act like browsers and users can freely and frictionlessly navigate the L2.
What you need: trust assumption, preservation
UX integration is attractive. But this is only possible if it does not compromise Ethereum’s core values.
- self custody: Users hold their own assets and initiate transactions on their own.
- censorship resistance: No broker can block or delay your transactions.
- seclusion: There is no need to reveal your IP address or intent to the relayer or resolver.
- Verifiability: Important logic can be checked on-chain or in open source wallet code.
EIL is designed according to the No Trust Statement. This moves logic on-chain and into the user’s wallet, eliminating dependency on intermediaries and opaque server logic. Users transact directly on any chain. Trustless liquidity providers supply funds but do not interact directly with users or confirm transactions.
Instead of “I trust the bridge operator to move my funds,” you will get “My wallet and contracts do this according to verifiable rules.”
Trust boundaries are kept to a minimum.
Ethereum is about disintermediation. The same should be true for interoperability.
Ethereum’s great innovation is replacing middlemen with verifiable code.
Cryptocurrencies once relied on centralized exchanges (CEXs) until Ethereum enabled decentralized exchanges (DEXs). No need to trust a custodian, no counterparty risk, just a verified smart contract. DeFi has changed the world by providing a middleman-free alternative to TradFi.
Cross-L2 interoperability is still similar to the CEX model.It features bridge operators, relayers, resolvers, and opaque off-chain infrastructure.
Inter-L2 Transactions It shouldn’t be as trustworthy as using a DEX..
EIL moves logic on-chain and into the user’s wallet, eliminating dependency on intermediaries and opaque server logic. Users transact directly on any chain. Trustless liquidity providers supply funds but do not interact directly with users or confirm transactions.
From the user’s perspective: How does it feel?
Cross-chain transfer — Alice has USDC in Arbitrum and Bob has it in Base.
With one click, her wallet executes a transfer to Bob’s default address. From Alice’s perspective: “Send USDC to Bob” — She doesn’t care what network it happens on.cross chain mint — Alice holds ETH in Arbitrum and Scroll. She wants to issue NFTs on Linea.
Her wallet automatically consolidates balances and transparently handles gas and asset transfers between chains. One signature with one click.Cross Chain Swap — Alice finds better liquidity for her tokens on Optimism DEX.
She switches out of Arbitrum, her wallet handles the path, and she comes back to Arbitrum with new tokens without any bridging or manual steps.
For users: “Send, publish, exchange – I just do what I want.”
Here’s the story behind it: “Wallets + on-chain protocols are transacted across chain. There are no new trust requirements.”
Why this matters to the ecosystem
When interoperability becomes important Wallet-level features Instead of app-specific integration, the entire ecosystem evolves.
- Wallets and dapps are basically multichain based.
- New rollups are automatically compatible, accelerating adoption.
- Developers can focus on building great experiences without having to do any cross-chain plumbing.
- Users regain the simplicity of Ethereum: one wallet, one signature, many chains – one experience.
- Most importantly, Ethereum’s trust minimization model remains intact without the need for new intermediaries.
This brings us closer to our original promise: a global, open, seamless, and trustless world computer.
conclusion
Ethereum has already expanded. What was delayed emotion Harmony.
The Ethereum Interop Layer is the next step toward integration where your wallet is a portal and every rollup feels like a native extension of Ethereum rather than a separate silo.
We invite wallet teams, dapp builders, network designers and the wider ecosystem to join us on this journey.
Together we can not only make Ethereum scalable; Singular without seams.
Let’s make Ethereum feel like a chain again.