Vitalik Buterin: Synchronous atomic composability is overrated
Ethereum co-founder Vitalik Buterin posted on social media that in my opinion, synchronous atomic composability is overrated. For example, think about some specific things you are doing or envisioning doing across L2 that can be more seamless. The two most important things for me are:
1. I have coins on Optimism and I want to pay Bob, but Bob is only on Arbitrum.
2. I have coins on Taiko and I want to use a dapp on Polygon, so I need to send it to myself on Polygon to use that dapp.
These are not fancy problems that can be solved by solving the synchronization problem. These UX issues could be addressed by:
(i) widespread adoption of ERC-3770, making the chain part of the address, so that the address is once again a self-contained "how you pay me" identifier;
(ii) cross-L2 swap protocols (like ERC-7683), so that cross-chain sends can be done programmatically without having to worry about which specific intermediaries to trust and which APIs to connect to;
(iii) wallet integration, so that cross-chain sends can be done by just putting the recipient's ERC-3770 address into a text box, just like a normal send today.
Solving nerd problems ** can make efficiency much better, especially by making cross-chain swap markets more friendly to liquidity providers, reducing withdrawal times from a week (optimistic rollups) to an hour (today's zk rollups) to an hour (zk rollups). But even so, there are still orders of magnitude of benefits that no one is paying for, and there is no need to even enter the synchronous market.
Original link (https://x.com/VitalikButerin/status/1803459217933623418)
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