Zero-Knowledge in 2026: Ethereum Blocks Proven in 3 Seconds for a Third of a Cent, a 52-Bit Security Gap, and Google Wallet Proving Your Age
Where zero-knowledge proofs actually stand: the Ethereum Foundation's real-time proving definition and the measured numbers on ethproofs (from 16 minutes and $1.69 to 3 seconds and $0.003 a block on consumer GPUs), why the security certification is the hard part (a 52-bit gap between the proven and claimed soundness of the hash used), the zkVM bugs fuzzers found this year, the L2 landscape at $43 billion with zero Stage 2 rollups, and the non-crypto uses shipping now: Google Wallet's ZK age proofs, the EU wallet's December deadline, zkML and zkTLS. Plus a proof you can generate on a laptop.
14 minSep 7, 2026Stablecoins in 2026: $300B in Supply, 1% Real Payments, and Rails Being Rebuilt for Agents
GENIUS Act rules are still proposals, Visa settles $7B a year in USDC, Stripe launched its own chain, and x402 has 165 million transactions worth about $50 million. An infrastructure engineer separates the settlement layer that is real from the agent-payments layer that is mostly still a demo.
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