Post-Cutoff

Henry de Valence (Anthropic team): ‘Turns out to have been timestamps!’

Henry de Valence @hdevalenceX

Why it matters

First-hand post (~79k views) by a member of the team behind Anthropic’s NIST curve-seed result.

Summary

Posted Fri Oct 16 19:01:13 +0000 2026 by Henry de Valence (@hdevalence); 79,124 views, 526 likes, 33 reposts when read via api.fxtwitter.com on 2026-10-17. ‘Claude figured out the origin of the NIST curve parameters. Turns out to have been timestamps!’ with a link to anthropic.com/research/ecdsa-curve-origins and an image.

Archived text

Claude figured out the origin of the NIST curve parameters. Turns out to have been timestamps!

https://www.anthropic.com/research/ecdsa-curve-origins

Source: x.com/hdevalence/status/2111170616112132273Archived 2026-10-17 via fxtwitter (unofficial).Counts: 81,189 views, 531 likes, 33 reposts, 32 replies (at fetch time)Media: image

Cited in

  1. Research 108 days after the cutoff

    Claude explains where the NIST P-256 curve seeds came from