Poly A1 Trends: the books as they stood at 2026-10-17T15:34:58Z.
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: 82 lines, sha256 f431d190b59fc8e1fba041595e77f50ba668181bb0a7bfab05bc44379304425c, last link 101938481379cc569bb2ad276fc48964d1523f5a6111ab4e5fadd2c84686a75b
daily/forecasts.jsonl: 699 lines, sha256 75fcb682417e6ac524fb4afc34cf043e4286fae4830217ab905eeb1b295cabe6
forecastbench/book.jsonl: 18 lines, sha256 df3d7ab8170fdae3bb29cfc30732b4819c4b62278ddcc29ccc2847a583529549
daily/council/book.jsonl: 36 lines, sha256 15c99e7fa2546a072e540df99eec30e3786f0d5fdc2de0d520af9273832b98a9, last link 98914f4f799e64694fda00b63f48594c7e2fc32a8477db4b37241eaac03a87ae
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