Poly A1 Trends: the books as they stood at 2026-10-17T03:34:25Z.
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: 76 lines, sha256 2406479393430df34940d46f543e3645e077300303e2ace66d49248251cba929, last link 6832443404c93a9c3a587f58d38f0feaaee87ef55c2c19c9d6aab82595b78365
daily/forecasts.jsonl: 639 lines, sha256 f3ec670a523ee1ddd92ff7d4ff9587e06ad7845f27450b632522857999e995a6
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