The Ethereum blockchain was unable to complete transactions for just under half an hour, the developers said on May 11.
The incident lasted approximately 25 minutes, and Ethereum contributor terence.eth said that the issue has now been resolved. He wrote:
“Mainnet has been terminated and we are investigating the incident now. More to come!”
Ethereum Superphiz Contributor said that Although Ethereum’s beacon chain has stopped ending, the blockchain is “designed to be resilient” against such issues. The chain continued to process transactions partially during the incident.
Although the cause is still unknown, Superphiz suggested that the issue may be caused by a lack of client diversity. He said that the loss of finality could have been avoided if no client had more than a third of the domain over the network. He added that the blockchain prevented the fork because no customer had a large majority.
Two consensus clients, Lighthouse and Prsym, currently dominate Ethereum, each with 38% mastery. Only three other clients have a prominent presence.
Ethereum has experienced other outages in the past: it experienced a DDOS attack in 2016 and saw Infura-related partial outages in November 2020. In 2016, an attack on The DAO also heavily affected Ethereum.
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