Vitalik: Synchronous atomic composability is overrated

BlockBeats news, on June 20, Ethereum co-founder Vitalik Buterin responded to relevant discussions on the social platform and said, "Synchronous atomic composability is overestimated. Think about some specific cross-L2 things you are already doing or imagine doing, which could be more seamless. For me, the two main problems are:

· I have coins on Optimism and I want to pay Bob, but Bob is only on Arbitrum;

· I have coins on Taiko and I want to use a dapp on Polygon, so I need to send the coins to Polygon to use that dapp.

These are not advanced technical problems that can be solved by solving synchronization. These are user experience problems that can be solved by:

(i) Widespread adoption of ERC-3770, making the chain part of the address, so that the address once again becomes a self-contained "how to pay me" identifier;
(ii) A cross-L2 (iii) wallet integration so that cross-L2 sends can be done by entering the recipient’s ERC-3770 address in the same text box as you do a regular send today.

Solving the technical issues could indeed make this process more efficient, particularly by making cross-chain swap markets friendlier to liquidity providers and reducing withdrawal times from 1 week (optimistic rollups) to 1 hour (current zk-rollups) to 1 timeslot (ideal zk-rollups with proof-of-settlement). But even here, there are multiple orders of magnitude of untapped benefits that don’t require synchronicity.”