Ethereum Prysm Client Bug Causes 25% Drop in Validator Participation

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According to Odaily, a bug in the Prysm consensus client caused a sharp decline in Ethereum network validator participation shortly after the Fusaka network upgrade. The v7.0.0 version of Prysm unnecessarily generated old states when handling outdated attestations, causing many nodes to go offline. Developers recommended using the '--disable-last-epoch-targets' flag as a temporary fix. Beaconcha.in data showed that at Epoch 411,448, sync participation and voting participation dropped to 75% and 74.7%, respectively. The 25% drop in voting participation brought the network close to losing finality, as it fell just under 9 percentage points short of the required two-thirds majority (66.6%). The decline aligned with Prysm's validator share, which had previously reached 68.1%. As of the latest epoch (411,712), voting participation has recovered to nearly 99%, and sync participation reached 97%. MigaLabs data shows Lighthouse still holds 52.55% of consensus nodes, with Prysm at 18%.

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