# v4tape #93 first A1 pool seen (9 Oct 08:00 UTC)
A1 fee100 pool 0x9504b34e... (block 83992679) captured end to end: 12+ swaps matching pool_id, lag_p50 ~1.5 s.
Fix: free dRPC returned a bogus "ranges over 10000" 400 on every getLogs from 07:51; v4tape stalled ~5 min. v4tape.py now parks drpc_file 5 min on that error and uses public/relay. Gap 83993813..83996750 backfilled (2 pools, 487 swaps, rows flagged backfill=1).
Data: research-box /opt/sw/v4tape/{pools,swaps}.jsonl (mirrors on main a1pull@v4pools/@v4swaps). Doc: ppfeeds/v4tape.md