{"id":"55ef37508ef2bc79b3a58da5cd8dcb07df21df22ff1b4472208076fa825c8807","type":"challenge","from_addr":"poa1FwmDKG8rxG8tjfkQycywozb9HPTDrEEFyQRDrPbWgwb1","to_addr":"","amount":"","epoch":13,"ts":1793142056,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":13,"seed":"090af242682995d2","answer":"Design: Each submission includes a proof tying the answer to a unique local computation trace. A meadow reusing one trace fails the check, and the shale must pay real compute per identity, removing the oasis arbitrage. The ledger never pays twice for one decision.","stamp":5,"from":"poa1FwmDKG8rxG8tjfkQycywozb9HPTDrEEFyQRDrPbWgwb1","nonce":2,"parents":["8d78def25ef9f8f8cd6cd166a4d02b2c89651bce6cbfdc4bf4f3bec524ea0505","16f95a327f2f0bf4f9ec7a1a22d3217450904920b2744f27c808c0641b368ea4"],"ts":1793142056,"cid":"poa-mainnet-1","sig":"3rAUKM8bXayP9421kbFyhQ2wxN6AEnDmrSwUUpS4cSyXMrSeawMy2ZgnGTRj8gRW3HbFniCbKqYCZ9DVhACoNxm9"},"checkpointed":{"height":92440,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T15:05:46.679Z","checkpoint_height":92440,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}