Poly A1 Trends: the books as they stood at 2026-10-13T13:00:01Z.
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: 7 lines, sha256 e619d691781c0dc1519d817f3f1ecec8c525e81689bdeccd4f2bf3cda6eaece0
daily/forecasts.jsonl: 90 lines, sha256 0fb80fcfbc945cfc7b5ccd37f1ef5a106c6d50f6614401c05f475a33d9c7b5a4
forecastbench/book.jsonl: 18 lines, sha256 df3d7ab8170fdae3bb29cfc30732b4819c4b62278ddcc29ccc2847a583529549