Ethereum's Fusaka upgrade activated Dec 3, 2025, bringing PeerDAS to mainnet for efficient data availability sampling---nodes sample \~1/8 of rollup blobs. Capacity increased via BPOs. zkEVM roadmap eyes 128-bit security by end-2026, shifting to proofs. Challenges BTC settlement?
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Ethereum's Fusaka upgrade activated Dec 3, 2025, bringing PeerDAS to mainnet for efficient data availability sampling---nodes sample \~1/8 of rollup blobs. Capacity increased via BPOs. zkEVM roadmap eyes 128-bit security by end-2026, shifting to proofs. Challenges BTC settlement?