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#1 Campaign
Finance · October 2026
Claude solves the cryptography mystery
Friday 16th October, 2026
Anthropic used Claude to investigate unexplained numbers in widely used cryptographic standards, tracing them to a 1990s computer program and timestamps. The hook was a decades-old mystery that had fuelled suspicions of an NSA backdoor, solved in under 30 minutes; the finding points to no security flaw.
Why it worked: It reframed a decades-long national‑security suspicion with a fast, falsifiable demo—reproducing the seeds via lrand48 timestamps—giving journalists a clean, decisive reveal.
The lesson: Consider solving a long‑unsolved rumour by replicating its root mechanism on the record—publish the script, inputs, and verifiable outputs.
Anthropic
5 Sources:
Coverage over time
How this story spread across the media
| Publication | Headline | Date |
|---|---|---|
| anthropic.com | Claude reveals ECDSA curve origins \ Anthropic | Friday 16th October, 2026 |
| investing.com | Anthropic says Claude solved 25-year cryptography mystery in 30 minutes By Investing.com | Friday 16th October, 2026 |
| coindesk.com | Anthropic’s Claude cracks a 25-year NSA curve mystery, what it means for bitcoin | Saturday 17th October, 2026 |
| inshorts.com | Claude solves decades-old cryptography mystery in just 30 minutes | Sunday 18th October, 2026 |
| ynetnews.com | Claude cracks 25-year NSA cryptography mystery in under 30 minutes | Sunday 18th October, 2026 |