The 22% self-limit rule ensures at least four major staking entities would need to collude in order for the chain to reach finalization.
At least five Ethereum liquid staking providers have either imposed or are working to impose a self-limit rule in which they promise not to own more than 22% of the Ethereum staking market — seen as a move to ensure the Ethereum network remains decentralized.
Among the Ethereum staking providers either already committed or are working to commit to the self-limit rule include Rocket Pool, StakeWise, Stader Labs and Diva Staking, according to Ethereum core developer Superphiz.
Puffer Finance, another liquid staking service, also announced its commitment to the self-limit.
The proposal presumably aims to address concerns of Ethereum staking becoming increasingly centralized.
As to why the self-limit was proposed at 22%, Superphiz explained that because 66% of validators need to agree on the state of Ethereum, setting the limit below 22% means at least four major entities must collude in order for the chain to reach finalization.
Finality is the point where transactions on a blockchain are considered immutable, supposedly ensuring that transactions within a block cannot be altered.
The idea was proposed by Superphiz in May 2022 when he questioned whether a staking pool would be willing to put the health of the chain before its own profits.
“They have expressed an intention to control the majority of validators on the beacon chain,” Superphiz said in an Aug. 31 post.
Source : [Ethereum staking services agree to 22% limit of all validators](cointelegraph.com/news/ethereum-staking-services-agree-self-limit-validators) by Cointelegraph By Brayden Lindrea - 54Cointelegraph.com News by Cointelegraph By Brayden Lindrea / September 01, 2023