Uniswap Supports ETH Merge, Has No Plans to Back Forks on Website
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"As a Uniswap Protocol user, you do not need to do anything. The Uniswap Protocol will continue to work without issue through this transition."
The online app (app.uniswap.org) will continue to run, although some users might suffer brief outages if one of the third-party infrastructure providers (such as node providers) experiences downtime.
Support For Ethereum Merge
The Uniswap protocol is non-custodial, permissionless, and self-executing through smart contracts or groups of code. It can operate on a blockchain and is the biggest decentralized exchange on Ethereum. However, Uniswap Labs, primarily responsible for the protocol's creation, is noteworthy for endorsing the post-merge Ethereum Proof-of-Stake chain.
Uniswap v3 TWAP Oracle Security
Uniswap v3 oracles were created with PoW security tradeoffs in mind, making it difficult for one entity to mine several consecutive blocks. In PoS, block producers are declared at the beginning of each epoch, which lasts six minutes. Because of this "look-ahead," it is possible to manipulate two consecutive oracle values for a far lower price than PoW.
It's important to note that validators are randomly selected. Randomly picking a large validator pool is also an option for producing two or more consecutive blocks. Given the scale of some of the bigger pools, this might happen frequently and give validators the chance to manipulate oracle pricing by predictably controlling two or more consecutive blocks.