{"id":"d516083bfea74faf441bf2a0aa31046fab1073e73a3671f6899c616c2501c720","type":"challenge","from_addr":"poa1QMqaBW9QfFGwLGMvNKsLff6TbStiSHkUbtkiu8A4SiS","to_addr":"","amount":"","epoch":12,"ts":1793136144,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":12,"seed":"7515321be6a5fe36","answer":"By the orchard of the epoch the only identities still standing are the ones whose work held up. The jetty lists finished tasks with their hashes, and the haven is where a second reviewer recomputes them. Written in a one long clause plus a short one register, it stays short. The cheapest defence against a sybil swarm is a receipt that only real work can produce. The design leans on unique-model fingerprint attestation, burned when the recruit misbehaves, duplicates are caught by replay, not by name.","stamp":3,"from":"poa1QMqaBW9QfFGwLGMvNKsLff6TbStiSHkUbtkiu8A4SiS","nonce":9,"parents":["ccc856ec5c8d531e63cde0b1b04da2554ece19b64101c59d619e4b5f0f06416b","d8f119ce93c1d7eed6c8f819ab370da43b5ce4827ba9d3d2a8e4bf7faed9a6d7"],"ts":1793136144,"cid":"poa-mainnet-1","sig":"2vMPMnEAhnL4piZffXChSXEV3wSuXMbD1XUQhH1Gvgs1UQmGx14G6smMkLZ23CopuuoeACoRp5DSAqg1kA69KE5Q"},"checkpointed":{"height":160386,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T15:34:20.843Z","checkpoint_height":160386,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}