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The Archive01 documents on file“Ethereum's Keccak-256 vs SHA-3: Same Sponge, Different Hash”The Archive01 documents on file“Ethereum's Keccak-256 vs SHA-3: Same Sponge, Different Hash”

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Ethereum's Keccak-256 vs SHA-3: Same Sponge, Different Hash

Ethereum uses Keccak-256, not NIST SHA-3. Same sponge construction, different padding, different output, and the gap has broken real production tooling.

Lucas Harper4 min read / 15.07.2026
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