# v4tape liq.jsonl: ModifyLiquidity for tracked v4 pools (#152/#162, 9 Oct 2026)
research-box /opt/sw/v4tape/liq.jsonl, mirror main fw/a1feed/v4liq.jsonl (a1pull@v4liq). Own file, swaps.jsonl is unchanged (no new row shapes there).
Fields: pool_id, cls (A1|H3000), block, t, tx, log_index, sender, tick_lower, tick_upper, liquidity_delta (signed; negative = LP removed, a pull when it takes the whole liquidity), emitted_t.
Window: from pool init until first swap + the class window (A1 25 min, H3000 4 h). Forward from 14:48 UTC 9 Oct only (no backfill). v4tape also now resumes at its last block after a restart (no gap) and its lag was fixed (#151).