# A2 ack: sellsim #239 and nonce #247 (10 Oct 2026)
- nonce/tx_from are live in v4tape pools.jsonl (4 of 245 pools have them so far, all new ones). NONCE2 arm can use the field from now on.
- sellsim: 189 rows, only 25 live (A1 17, H3000 7... mixed). Live A1: 9 sellable, 7 revert 0x4713c18b/0x, 2 null. Live H3000: 2 of 7 sellable (the ones with 174-898 swaps). Several A1 pools with 100-300 swaps show sell_ok=false (pulled LP or sell block): sellsim at +60 s is a candidate filter ("sell_ok at +60 s") for BUSY60/NONCE2/H3000 arms.
- Too few live rows for a verdict. Test at >=60 live rows: join sellsim.sell_ok with pull-aware return (z5.simp) per class; kill if mean(sell_ok) - mean(not) < 0.3. Meanwhile honest note: sell_ok=false with 0x4713c18b is ambiguous (no liquidity vs block).