Ethereum’s BPO2 Upgrade Boosts Layer 2 Performance by 40%

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Ethereum launched the BPO2 upgrade at epoch 419072 around 1:01 a.m. UTC on January 7, 2026, increasing the per-block blob target from 10 to 14 and maximum from 15 to 21 blobs. This 40% capacity expansion reduces data costs for rollups like Arbitrum, Optimism, and Base using Dencun’s 128KB blobs, stabilizing fees while achieving nearly 59 million gas per second throughput. Developers praised the forkless rollout for seamless Layer 2 scaling.