ENS on Layer2 @Ethcc 2021

Transcript

1. ENS on Layer 2, Ethcc, July 2021
   Makoto Inoue (@makoto_inoue)
   

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2. What is ENS?
   0x5a384227b65fa093dec...
   

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3. What is ENS?
   matoken.eth
   

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4. ENS growth
   

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5. ENS is exploding
   https://medium.com/etherscan-blog/4-metrics-highlighting-ens-adoption-1db528f8416f
   

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6. Because of lower gas...
   https://medium.com/etherscan-blog/4-metrics-highlighting-ens-adoption-1db528f8416f
   

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7. Agenda
   - 1. ENS L2 design considerations
   - 2. Rollup agnostic L2 integration
   - 3. What about other EVM compatible chains?
   - 4. FAQs
   

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8. 1. ENS L2 design considerations
   

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9. Most “L2/EVM chain” strategies
   - 1. Deploy a copy
   - 2. Select Network
   - 3. Add Liquidity incentive
   

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10. ENS “L2/EVM chain” design discussion
    - 2020 Sep: “A general-purpose L2-friendly” ENS standard by Vitalik
    - 2020 Oct: “A general-purpose bridge for Ethereum Layer 2s” by Nick
    - 2021 Apr: “MVP of ENS on L2 with Optimism” by Nick
    

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11. ENS “L2/EVM chain” requirement
    - 1. No “Switch network” for reading names
    - 2. No “Pick a winner” (yet) for updating record
    - 3. Minimise additional trust assumption
    

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12. 2. Rollup agnostic L2 integration
    

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13. ENS architecture recap
    - 2 requests model
    - Swappable resolver
    

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14. L2 Gateway
    - 3 requests model
    - Set gateway per resolver
    - Verify with proof at L1
    

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15. Durin: Secure offchain data retrieval
    (EIP 3668)
    https://github.com/Arachnid/EIPs/blob/durin/EIPS/eip-3668.md
    

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16. L2 Gateway on Optimism Demo
    https://www.youtube.com/watch?v=9DdL7AQgXTM
    

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17. L2 Gateway
    on Optimism
    https://github.io/ensdomains/l2gateway-demo
    

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18. L2 Gateway
    on Optimism
    https://github.io/ensdomains/l2gateway-demo
    

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19. L2 Gateway
    on Optimism
    https://github.io/ensdomains/l2gateway-demo
    

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20. L2 Gateway
    on Optimism
    https://github.io/ensdomains/l2gateway-demo
    

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21. L2 Gateway
    on Optimism
    https://github.io/ensdomains/l2gateway-demo
    

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22. 3.What about other EVM
    compatible chains?
    

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23. TVL on EVM compatible chains
    https://twitter.com/richwgalvin/status/1399992712451948546
    

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24. - Bridge gateway
    - App gateway
    - Trusted gateway
    Alternatives
    

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25. - Bridge signs the data
    - Verify bridge signer, not data
    Bridge Gateway
    EVM
    Chain
    

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26. Bridge Gateway
    Pros
    - Retains the same security assumption
    Cons
    - Bridge needs modification/extension
    - Signer must be verifiable on L1
    

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27. - Name owner hosts the gateway
    - Name owner signs data
    - Verify name ownership, not data
    App Gateway
    EVM
    Chain
    

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28. App Gateway
    Pros
    - No dependencies to the bridges
    Cons
    - Each App has to host own gateway
    - Less trustless
    

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29. - Name owner hosts the gateway
    - Name owner signs data
    - Verify name ownership, not data
    Trusted Gateway
    DBMS
    

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30. Trusted Gateway
    Pros
    - No ENS registry required off L1
    Cons
    - Trusted
    - No NFT
    

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31. Comparison
    

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32. - Registration & Renewal gas cost
    - Subdomains
    - Ownership
    4. FAQs
    

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33. Q. Does Registration & Renewal gas cost
    become cheaper?
    

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34. A: Not for now
    - Registry will remain on L1
    - Resolver can move to a L2
    - Use of Subdomain
    

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35. Q. Can I create subdomains on L2 and sell
    as NFT?
    

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36. - Wildcard support
    - https://eips.ethereum.org/EIPS/eip-2544
    - NFT support on Registry
    A: Yes
    

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37. Q. How do I prevent from transferring the
    same name to different owners on L1 and
    L2?
    

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38. - ENS is NFT
    - NameWrapper for subdomains
    A: Lock your name on a cross chain bridge
    

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39. For more information
    Makoto Inoue / @makoto_inoue
    https://github.com/ensdomains/l2gateway-demo
    https://discuss.ens.domains/c/feature-request/layer2/10
    https://discord.gg/AskZbFx
    https://github.com/Arachnid/EIPs/blob/durin/EIPS/eip-3668.
    md
    

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