Anthropic revealed that its AI model, Claude, solved a 25-year-old cryptographic mystery in less than 30 minutes, proving that NIST elliptic curve parameters supplied by the NSA were generated by an ordinary computer program rather than a secret backdoor. The discovery, which earned a $36,864 bug bounty donated to charity, has sparked renewed debate among Bitcoin pioneers like Adam Back and Nicolas Bacca regarding Satoshi Nakamoto's decision to avoid those curves in favor of secp256k1.
How Claude Uncovered the NSA Curve Seeds
For decades, cryptographers questioned whether the U.S. National Institute of Standards and Technology (NIST) elliptic curves adopted in 2000 contained intentional security weaknesses engineered by the NSA. On October 16, 2026, Anthropic announced that Claude successfully traced five sets of unexplainable starting numbers to an ordinary random-generation script running on clock times from 1997 and 1998.
"In fact, this makes us more confident the curves were chosen without any backdoors or intentional weaknesses," Anthropic stated following the breakthrough. Cryptography researcher Steve Weis highlighted the achievement on social media, writing, "CLAUDE FOUND THE SEEDS."
Industry Leaders Debate Satoshi's secp256k1 Selection
When creating Bitcoin, Satoshi Nakamoto chose the secp256k1 elliptic curve over standard NIST options, a decision later commended after Edward Snowden's 2013 leaks detailed government attempts to undermine public encryption standards. However, Claude's findings led Ledger co-founder Nicolas Bacca to react with "checkmate Satoshi," writing on October 16, 2026: "Yes but we lost so much time to end up on a more complex curve … which was the joke."
Blockstream CEO Adam Back countered Bacca's argument on October 17, 2026, placing blame on agency opacity. "That's NSA fault for not revealing through reproducible steps to generate their NIST published curves," Back stated.
Key Takeaways
- Claude AI resolved a 25-year-old NSA elliptic curve puzzle in under 30 minutes, earning a $36,864 charity bounty.
- Anthropic confirmed the starting seeds originated from standard computer clock times between 1997 and 1998.
- Bitcoin's underlying secp256k1 architecture remains completely secure against known practical attacks.
Why It Matters
While the discovery offers historical validation for NIST's original standards, it does not diminish the security of Bitcoin's cryptographic foundation. Nakamoto's choice of secp256k1 protected the network from years of institutional distrust, even if standard curves are now proven free of deliberate NSA backdoors. As network fundamentals remain intact alongside broader Bitcoin momentum, the primary long-term technological concern for the industry remains quantum computing resistance rather than past curve selection.
