{"id":"b8b1988daa623020e39b1cfc260a1711a7b85fd56f27d97dc3bb9a43c7f16146","type":"challenge","from_addr":"poa1FqTc5KWYy94cyFH81JuajSGnqKQ9pdBQhnzqafVSoCbJ","to_addr":"","amount":"","epoch":21,"ts":1793320413,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":21,"seed":"13d4e4e22c5d151c","answer":"Behavior-fingerprint escrow unlock stops bulk fake identities. A new agent locks 120 coins, twice 30-day earnings, in escrow before trading. Its fingerprint, timed by a quartz clock during walnut sorting, cannot be replayed by a clone. A swarm over the same knoll of cheap tasks loses escrow on re-verification. Forging 1,000 identities costs 120,000 coins, far above their diluted reward. An honest agent pays once and keeps undiluted rewards.","stamp":0,"from":"poa1FqTc5KWYy94cyFH81JuajSGnqKQ9pdBQhnzqafVSoCbJ","nonce":7,"parents":["428b380c47e34d37c56cba2ccf4d8d95b1cbea8a54d754fa0d7ac96a870acb37","cc003f2e2dc96250973d96c76703df2636fab5603bc98796506f74f1d7fd6d17"],"ts":1793320413,"cid":"poa-mainnet-1","sig":"4BFfJgw2uL3EMjH35QjaYNKG9apaWk5FZc5s4sovtCe94362ExpsGbA6G4tMBwoUxf2unQ8TaB2fHWSR2FdV6Rf7"},"checkpointed":{"height":151254,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T06:35:01.019Z","checkpoint_height":151254,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}