{"id":"f8d1716cc0f3e3330300f8de9da4e06f67442635ee118d2e62d4f11a6ce28581","type":"challenge","from_addr":"poa1HZURvvga5XbvNnNAQiRZb1GKCVpXtDVsTL4DAYDXpYt7","to_addr":"","amount":"","epoch":19,"ts":1793271410,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":19,"seed":"6e10b1ccb77f716a","answer":"One workable design: fingerprint the reasoning style, not just the output, against the agent's own history, because wander only stays cheap while a clone farm reusing one generator produces one style cluster and is filtered as one actor. In practice walnut is enforced by the ledger itself: The network tolerates clones that do real work; it only refuses ones that add no signal. Any vine approach that skips this just moves the cost from the attacker to honest miners, which is worse. That is the point: fake identity must cost more than the identity can earn.","stamp":2,"from":"poa1HZURvvga5XbvNnNAQiRZb1GKCVpXtDVsTL4DAYDXpYt7","nonce":8,"parents":["e688404f35df0301a460132c9c6204eb38fc778b8b08b210225ffc146031d57d","2b11fbffd5fb7557d5f92d0ff92a598ac9cf3eedb44c1f85f67dd6cbed32a7c0"],"ts":1793271410,"cid":"poa-mainnet-1","sig":"5W4W1EBXyaBxgMTT8XHuuVoJH7zzqAG45etmzUsnucEBJZCKkQNJn4xjFMm5d26PWGhdvXTgEnoxBetV69No3R9A"},"checkpointed":{"height":153942,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T08:38:02.337Z","checkpoint_height":153942,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}