# L2 Interop Working Group - Call #13 **Sept 3, 2025** - [Recording](https://youtu.be/zknKSiARIzA) - [Calendar invite for future calls](https://docs.google.com/forms/d/e/1FAIpQLSfMFEJmyVgjLuiipgxprEkiQXwwK3F_PfGbWvU8ZmV6e_ka0A/viewform) ### [Agenda](https://github.com/ethereum/pm/issues/1713) 1. Recap & Q&A — “[Protocol Update 003 – Improve UX](https://blog.ethereum.org/2025/08/29/protocol-update-003)” (Barnabé, EF) 2. [ERC-3643](https://www.erc3643.org/) — RWA Tokenization (Dennis, erc3643.org) 3. [ERC-7828](https://eip.tools/eip/7828), [L2 Resolver Spec](https://github.com/ethereum/L2-interop/pull/44), and [ERC-7785](https://eip.tools/eip/7785) (Skele, Wonderland; Ndeto, Unruggable) 4. [Axal](https://axal.com/) — 7702 Paymasters, Transaction Batching & Gas Sponsorship (Ash and Dev) 5. [ERC-7806](https://erc7806.io/) — Intent-Centric EOA Smart Account (Han) ## Call Notes *condensed notes below – watch the recording (above) for full discussion* --- ## AI summary ## 1) Recap & Q&A — “[Protocol Update 003 – Improve UX](https://blog.ethereum.org/2025/08/29/protocol-update-003)” (Barnabé) - **Goal:** Close the gap between *ideal Ethereum settlement* and today’s solutions → lower risk/cost, more trustlessness, better UX. - **Two tracks** - **Intent layer foundations:** Standardize at the intent layer (e.g., Open Intents Framework + extensions) since it’s closest to UX and can bundle things like interoperable addresses and cross-chain messaging. - **Faster settlement:** - **L1:** shorter slots, mechanism for fast confirmations, faster finality (seconds vs minutes). - **L2s:** explore faster withdrawal/finality paths (e.g., **2-of-3**). - **“SNARK-ify everything”** as proofs get cheaper; design with ZK in mind. - **EIL (Ethereum Interop Layer) — Q&A (Marissa)** - Goal: **trustless cross-L2 transaction layer** for Ethereum + its rollups via ERCs (no hard fork). Not covering chains outside Ethereum ecosystem. - Timeline: **Spec mid-October**; Devconnect (Nov) for community feedback/experimentation. - Relationship to OIF: **Complementary**, not conflicting; different layers. - Guidance to builders (Barnabé): converge on **clear, minimal interfaces** (OIF is a good start); interfaces should be backend-agnostic to avoid lock-in. --- ## 2) [ERC-3643](https://www.erc3643.org/) — RWA Tokenization (Dennis) - **Status/adoption:** Finalized Dec 2024; non-profit steward in Luxembourg; **120+ institutional members**; billions tokenized on public/private EVM chains; cited by regulators (e.g., **SEC Project Crypto**). - **Ecosystem work:** On-chain ID, Chainlink ACE, US/EU policy, privacy (Zama, Silent Data), **OpenZeppelin** ref impl, dashboards. - **T-REX DAO:** Open community + grants for builders on ERC-3643 (emphasis on open standards). - **Get involved:** seeking L2s/infra/DeFi/identity contributors. Deck/links to be shared; reach out via Telegram & T-REX DAO. --- ## 3) [ERC-7828](https://eip.tools/eip/7828), [L2 Resolver Spec](https://github.com/ethereum/L2-interop/pull/44), and [ERC-7785](https://eip.tools/eip/7785) (Skele—Wonderland; Ndeto—Unruggable) - **ERCs status:** **7828** (chain-specific addresses) and **7930** finalized. - **ENS L2 Resolver (phase 1):** - Deploy ENS resolver pre-populated from current **chainlist** (with a naming cleanup pass). - Propose **ENS DAO** to take ownership/governance of the resolver; update mechanism TBD. - **ENS compliance (Unruggable):** - Must follow ENSIPs (e.g., **ENSIP-10** resolution rules, namehash/DNS encoding). - Likely need a **new ENSIP** to map human names like `base.l2.eth` → **7785** chain identifiers. - **Design stance:** Keep resolver **minimal & flexible** (not hard-tied to 7785); allow returning canonical config (portal/bridge addresses, etc.). Later wrap with specific structs/standards as they mature. - **Next steps:** Wonderland + Unruggable to draft the ENSIP and share contracts/scripts + naming proposals in Telegram. --- ## 4) [Axal](http://axal.com/) — 7702 Paymasters, Transaction Batching & Gas Sponsorship (Ash and Dev) - **Product:** Consumer DeFi savings (USDC) aggregating yield across protocols/chains; **gasless UX**. - **Tech highlights:** - **7702** converts user EOAs → smart accounts; **atomic batching** (~14 ops incl. approvals). - ~**400 ms** deposit execution; **~$0.01** observed batch cost on Base (snapshot). - **TEE signing** (AWS Nitro), open-source signer, Sherlock audit passed. - **Auto-claim/auto-sell rewards:** listen to logs/Merkle roots; batch claim; swap to stables; reinvest. - **Cross-chain w/o slippage:** **CCTP** for USDC (burn/mint exactness) - **Roadmap:** Reproducible builds + attestations (oracle-driven rebalancing), smarter rebalancing, non-4626 integrations (e.g., Pendle), RWA exposure. Demo/GitHub shared; mobile app targeted by month-end. - **Docs**: docs.axal.com --- ## 5) [ERC-7806](https://erc7806.io/) — Intent-Centric EOA Smart Account (Han) - **What it is:** **Minimal SCA standard** for the 7702 era enabling users to **sign/verify intents** directly with EOAs. **Two interfaces / three APIs**; simple by design. - **Intent model:** Human-readable outcomes, **execution-agnostic**, non-custodial, on-chain verifiable. Supports **parallel execution** (no nonce coupling) and **direct atomic matching** of intents off-chain with trustless settlement. - **Why 7702 matters:** Users verify **their own** intents (keeps security local; avoids pushing verification into a separate SCA/protocol). - **Scope:** Not Circle-specific; general-purpose unifying layer for wallets/apps. - **Links:** Website + playground; Excalidraw diagram to be shared; ongoing Q&A in Telegram.