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ENS on Starknet matoken.eth twitter: @makoto_inoue StarkWare Sessions 5th Feb 2023

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What is ENS? ENS offchain integration ENS on L2 and Starknet 01. 02. 03.

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What is ENS?

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@ensdomains What is ENS? 0x5a384227b65fa093dec...

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@ensdomains 1. Ethereum Name Service matoken.eth

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@ensdomains 2. Dweb

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@ensdomains 3. Avatar Text Record

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@ensdomains POAP x IYK x ENS

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ENS Offchain integration

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@ensdomains ENS ❤ Argent

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@ensdomains ENS 💔 Argent

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@ensdomains - 3 request model - Revert, Request, Verify Solution 1: CCIP-read (EIP 3668) Secure Offchain data retrieval

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@ensdomains Solution 2: Wildcard . .eth .matoken.eth *.matoken.eth resolve(“a.matoken.eth”) resolve(“a.matoken.eth”) L2/Offchain

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@ensdomains Example: Coinbase Wallet (cb.id)

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@ensdomains cb.id

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@ensdomains cb.id

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@ensdomains lens.xyz

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ENS on L2 and Starknet

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@ensdomains Offchain - DBMS / Side chains - No or little gas - Truested - In Production - cb.id/.lens Offchain vs L2 L2 - Optimistic/ZK Rollup - Little gas - On chain verifiable - Trust Minimized - No production (Yet) - POC on Optimism/Arbitrum

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@ensdomains L2 integration per application/wallet foo.cb.id bar.cb.id baz.cb.id foo.argent.xyz bar.argent.xyz baz.argent.xyz foo.lens.xyz bar.lens.xyz baz.lens.xyz cb.id argent.xyz lens.xyz Offchain

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@ensdomains - 1. eth_GetProof - 2. Check L2 state root on L1 - 3. Verify Storage Proof with Merkle Tree Lib L2 (Optimistic)Resolver

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@ensdomains - 1. eth_GetProof - 2. Check L2 state root on L1 - 3. Verify Storage Proof with Merkle Tree Lib L2 (Optimistic)Resolver

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@ensdomains - 1. eth_GetProof - 2. Check L2 state root on L1 - 3. Verify Storage Proof with Merkle Tree Lib L2 (Optimistic)Resolver

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@ensdomains - Non EVM - Different Address Format - Different hash function/prover - (pedersen over keccak256) Starknet / Zk Rollup

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@ensdomains - [✔] STRK Address format - [ ] pathfinder_getProof - [ ] pedersen hash - [ ] ENS contracts in Cairo Path to ENS on Starknet

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@ensdomains Enthusiastic Community https://discuss.ens.domains/t/ccip-implementation-for-ens-on-starknet/15691

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Thanks matoken.eth twitter: @makoto_inoue StarkWare Sessions 5th Feb 2023