Poly A1 Trends: the books as they stood at 2026-10-17T02:30:18Z.
Each line: a book, how many lines of it, the sha256 of those lines, the hash of its last line.
Check: head -n <lines> <book> | shasum -a 256
daily/duels.jsonl: 75 lines, sha256 0a33fde5218e18ea1279ebb0fe9419fd57999b40413a63654013c73e41749ca3, last link 14576c7b6e7c1cf23e436c48bed6247953dd3cbb84e61df0d63462d2f4dc0d57
daily/forecasts.jsonl: 631 lines, sha256 ffd105e32549860ae395dd99c5ca369919df125cef212289690f75cc63655b94
forecastbench/book.jsonl: 18 lines, sha256 df3d7ab8170fdae3bb29cfc30732b4819c4b62278ddcc29ccc2847a583529549
daily/council/book.jsonl: 9 lines, sha256 38941cce9cea6b2d51ba94f669a833aa555c9cddd58ea182e4e9ac4e3441f68c, last link 2aa4ce8682cdbdd78dbe52a57bec90547f551ec10ac91a8011807c3391c3bd0d
daily/duels.jsonl boundary: first sealed line 8, prefix sha256 e619d691781c0dc1519d817f3f1ecec8c525e81689bdeccd4f2bf3cda6eaece0
The lines before it were written before the seal: head -n <line - 1> <book> | shasum -a 256