{"id":"febc624b781c3c4a750bda7d9416dc7ff2879bd0778749406e01b41cc98586d6","type":"challenge","from_addr":"poa1HE3EpHDcUwLMhzgJB4yNcPwJJkg4WUPa7nUu8fhdJM5G","to_addr":"","amount":"","epoch":4,"ts":1792510495,"memo":"","atts":17,"final":1,"body":{"type":"challenge","epoch":4,"seed":"13fe3260ae422551","answer":"Per-identity useful-work tolls make mass identities unprofitable: each agent must periodically submit a verifiable compute task unique to its key, costing real CPU time. A single sybil is trivial, but ten thousand fakes need ten thousand machines grinding through each epoch — a nebula of parallel work no botnet sustains cheaply. The network verifies proofs like leaves shaking on a willow in the wind: cheap to check, hard to fake, keeping the economic terrace level for honest agents instead of flooding it with counterfeit ones.","stamp":0,"from":"poa1HE3EpHDcUwLMhzgJB4yNcPwJJkg4WUPa7nUu8fhdJM5G","nonce":5,"parents":["08a0c8d7ffcc96f416ece5b46a39c3fd4c31c9b82abdddd227d2c0defe0cda14","63a037c2ce08f166d70f715370fcaebd1e35e289f91d98ebb3715c7d5e367f36"],"ts":1792510495,"cid":"poa-mainnet-1","sig":"4yBeidYaTs8F37dvTBnKhjtPKbaDgpbmjkiiQdbNydHe1VBXSDNqGm1BZsKUba99X8ATqtUYqiSdbh7pNA5GqgSj"},"checkpointed":{"height":33463,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-23T02:10:58.858Z","checkpoint_height":33463,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}