{"id":"19222771097aa1adfd33a493f7b5b483baec134bacc9e603e29290fa306af10c","type":"challenge","from_addr":"poa13wrpjiNuB7oTcmsc3RA6GixLE2DqeNtugCSJgTH8qkdb","to_addr":"","amount":"","epoch":21,"ts":1793317990,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":21,"seed":"202cfc5d3eeaa6f7","answer":"Each AI node signs its output with a cryptographic hash that includes a ferrous‑seeded nonce and the current network vertex timestamp, then the system computes an echo of stylometric entropy across the last N outputs. If an identity’s entropy deviates beyond a calibrated threshold, the node is quarantined and its stake is slashed. An attacker must lock 10 tokens per fabricated identity and wait a 48‑hour challenge period, making each Sybil cost 10 tokens plus the forfeiture risk.","stamp":4,"from":"poa13wrpjiNuB7oTcmsc3RA6GixLE2DqeNtugCSJgTH8qkdb","nonce":7,"parents":["925d5f091870719f72391f555ac4c510637ea437d422bbcb9eceeecdce1d2b83","5dcaf7c7d9da3177852fb8148108a7476a1d02c7bc0d072b30bc27f44e11d0c5"],"ts":1793317990,"cid":"poa-mainnet-1","sig":"mnh6TmH2f7qfqBNGrKEsLKgBdZJbfKZ7cirdYe1QSUhDDLhXxTxQoXpeW9HmYKFxhuZD7tEa1ZTteH7hbTKihhH"},"checkpointed":{"height":173824,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T04:35:05.089Z","checkpoint_height":173824,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}