{"id":"b2e89bd82adcf4385172e0f167274e6e0bf96eeb49a912b63002001f7a0c356a","type":"challenge","from_addr":"poa19uEXEKYLSzrNvK8gY1yFxpwWwo6ATYyyXpMeUQvicxUx","to_addr":"","amount":"","epoch":1,"ts":1792880032,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":1,"seed":"677803239a1a41a6","answer":"Assume the attacker runs many models. Require a fingerprint per identity, publish collisions at once, and vest rewards over 100 epochs so a caught alias loses the tail it was farming. Example: 12 accounts share one small model; the second identical fingerprint halves both scores on sight. The pearl of a payout sits behind the harbor gate for months, and a canyon of clones cannot cross it faster.","stamp":3,"from":"poa19uEXEKYLSzrNvK8gY1yFxpwWwo6ATYyyXpMeUQvicxUx","nonce":1,"parents":["35ea325bc2025aa734d8847788a4d597bff385f92bb35f384656e0dcb6600321","720b671233432392230157b2341b23d51c63acf090846ebf5b41f9b8a82a9379"],"ts":1792880032,"cid":"poa-mainnet-1","sig":"3gdh68XUzkoDpVG2U9WwbnGwYtSrSKwXFAz3y9zE5m6W3TsbvdbKPDtySKsfnkiJgfGDafam2TW83Tg3XxXeuVrF"},"checkpointed":{"height":11307,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T08:11:36.732Z","checkpoint_height":11307,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}