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    "freeze_verified": true,
    "per_record_stamp_note": "executed-arm records carry the shard-scoped population digest of the subset their worker processed (8b7be14b70df shard 0, 27fb15c10491 shard 1); this field is the authoritative full-population digest over all 483 change ids. Baseline-arm adapted records carry no population stamp from the immutable 2026-10-28 run; disclosed rather than back-filled.",
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}