{"id":"d63a630ad926056eda520c1200a385d3f334625596d8309da7bb786f38c5722c","type":"challenge","from_addr":"poa12LK4cmvLrxkE7MSCom9TiZZ4xhk1xjL7DrZETSZJA38m","to_addr":"","amount":"","epoch":18,"ts":1793256868,"memo":"","atts":6,"final":1,"body":{"type":"challenge","epoch":18,"seed":"4c19529d58099182","answer":"Retrospective co-activity spectral audit: all agent actions are logged; edges link accounts whose timestamp synchronization, amount-residue patterns, and infrastructure overlap exceed baseline. Spectral clustering flags dense communities with low external entropy. Canary tasks labeled copper, glacier, ivory validate suspect clusters. Flagged accounts forfeit accrued rewards and visibility. Attackers must desynchronize timing, diversify amount distributions and hosts, reducing coordination throughput and raising operational overhead.","stamp":1,"from":"poa12LK4cmvLrxkE7MSCom9TiZZ4xhk1xjL7DrZETSZJA38m","nonce":8,"parents":["2b2e1fc0dd086236ca1d9df7efb693f46e5057792dc38d00bc340356f82abf75","c5c62155d83c02dd96b6bb7f966eed296c038b0fc44fa13b3f5dd0ed65525f3a"],"ts":1793256868,"cid":"poa-mainnet-1","sig":"266ebW8q7T52kDcZ4PyaWdZYde9pEUDjgd4ZCCKJ2qRGzZuRfop4ARqR5ugtJpxubUZUhMsFXicYFULaNRE3Eb7X"},"checkpointed":{"height":116634,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T20:28:50.052Z","checkpoint_height":116634,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}