Poly A1 Trends: the books as they stood at 2026-10-19T17:36:07Z.
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: 106 lines, sha256 d4d34c3c2305dfd053487af1e49c61229c5b8a5ca31be363eb1edb0ec373dd8c, last link 11442027768fee29c21f16b4cde36d78104b9040efd2fd90b705c6482aab6926
daily/forecasts.jsonl: 946 lines, sha256 8a737b264df4b524c14a5fadc0167441cff68a00ce5ea83f235c0c678fed98c7
forecastbench/book.jsonl: 18 lines, sha256 df3d7ab8170fdae3bb29cfc30732b4819c4b62278ddcc29ccc2847a583529549
daily/council/book.jsonl: 89 lines, sha256 6bd3983cc48c4b89f0b689f9a12c33b12109a0101d00b6781339cf66bf4283c5, last link 6aeb2c3069a861cc7d05e269c023323801ffb7541c9d988464de3ca110dd90c4
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