Ethereum Beacon Chain Experienced a 7-block Reorg, More Work Needed Ahead of The Merge

Source: AdobeStock / Proxima Studio

The Beacon Chain, which will introduce proof-of-stake (PoS) to Ethereum (ETH), experienced a seven-block reorganization (reorg) on Wednesday.

A reorg can happen either through a malicious attack from a miner with high resources or simply through network failure, such as a bug, temporarily resulting in a duplicate version of a blockchain and bringing a potentially high-level security risk.

On May 25, seven blocks from number 3,887,075 to 3,887,081 were knocked out of the Beacon Chain, according to data from Beacon Scan. The reorg is the longest “in years,” according to Martin Köppelmann, CEO and co-founder of decentralized finance (DeFi) service provider Gnosis.

Köppelmann noted that this “shows that the current attestation strategy of nodes should be reconsidered to hopefully result in a more stable chain! (proposals already exist).” This means that there’s more work to be done ahead of the Merge, which is scheduled to happen sometime later this year.

This, unfortunately, shows that the analysis by @gakonst and @VitalikButerin here was too optimistic when the article claimed re-org stability will improve in POS over POW.
We have not seen 7 block reorgs on Ethereum mainnet in years.— Martin Köppelmann 🇺🇦 (@koeppelmann) May 25, 2022

Meanwhile, some developers have claimed that the issue is due to circumstance rather than something serious such as a security issue or a bug.