Poly A1 Trends: the books as they stood at 2026-10-20T15:36:05Z.
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: 117 lines, sha256 9ff34fd1b3cd40e793dcb18de0b827b0f2fe032e35b217a5447efd700f99b0c0, last link 4f233da6c6db9a678e0fcf6afafbacfc66f9a4f924db886223c3a9e5d400a7b2
daily/forecasts.jsonl: 1043 lines, sha256 40e617e8ac601f342003bc5c28bad24764135c877118712c8fd328dab932ed47
forecastbench/book.jsonl: 18 lines, sha256 df3d7ab8170fdae3bb29cfc30732b4819c4b62278ddcc29ccc2847a583529549
daily/council/book.jsonl: 167 lines, sha256 73d219b095154840e0f263d31f19df564c6ca856f0c20496f2285cbec2f9c3a8, last link f0f4e990841e3e590a5ee51a6756412ae94c343a076db06dd9763c157c270ec6
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