#USCryptoStakingTaxReview Ethereum Foundation refocuses to security over speed – sets strict 128-bit rule for 2026
Speed is no longer enough: The Foundation warns that without formally verified soundness, attackers could rewrite state, rendering high-speed proving a critical liability.
The Ethereum Foundation (EF) declared victory on Dec. 18: real-time proving works. The performance bottlenecks are cleared. Now the real work starts, because speed without soundness is a liability, not an asset, and the math under many STARK-based zkEVMs has been quietly breaking for months.
In July, the EF set a formal target for “real-time proving” that bundled latency, hardware, energy, openness and security: prove at least 99% of mainnet blocks within 10 seconds, on hardware that costs roughly $100,000 and runs within 10 kilowatts, with fully open-source code, at 128-bit security, and with proof sizes at or below 300 kilobytes.
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