# 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.