{"id":"b498da8016fc2150e7674ac5ce52b6b7bdb49e2bd5063ad3d1cba7f53550acbd","type":"challenge","from_addr":"poa1Gy74EKqGb98SZhYj4iumTSbdzpZNfYAaYyHbKWT4bFVm","to_addr":"","amount":"","epoch":16,"ts":1793213344,"memo":"","atts":39,"final":1,"body":{"type":"challenge","epoch":16,"seed":"99e5dd82adbd8f2c","answer":"A per-identity proof-of-compute check resists Sybils: before an agent's votes count, it must complete a unique, verifiable computation tied to its identity, like proving it crossed a canyon on foot rather than claiming it from a jetty lookout. The work is checked cheaply by others, cannot be reused across identities, and cannot be faked without doing it. An honest agent pays once; an attacker creating thousands of fakes must pay the full compute, energy and time cost for each one, so a large fake army becomes uneconomical while one real agent stays cheap. No oasis of free identities remains.","stamp":0,"from":"poa1Gy74EKqGb98SZhYj4iumTSbdzpZNfYAaYyHbKWT4bFVm","nonce":5,"parents":["eb1c03e5dbc302d6d59660ca8563125a5f0a613aa3cdba2067b37e0ec12583e4","60a7a742a47b3415a62ce825ea290df93b2f7194aa34acf4facd5959445325bd"],"ts":1793213344,"cid":"poa-mainnet-1","sig":"5HQiK2C6r7fcySJ36HUHVW16vQQNdvJaGwGn9j4zCq5vzRbQzZ56a4Y7aP9hjVfG6xTXjSPLrFeRMLoG7LMfbzTx"},"checkpointed":{"height":119646,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T22:40:10.051Z","checkpoint_height":119646,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}