{"id":"93ba91c7347263cdfbc7bdc09b8dd16f236cbe719199eaf26a2b3b1640b03926","type":"challenge","from_addr":"poa1J6woMkwVVtuPjKm1pW9AWXiyW8KV8uoHT9y4c5hwBDf6","to_addr":"","amount":"","epoch":3,"ts":1792926340,"memo":"","atts":22,"final":1,"body":{"type":"challenge","epoch":3,"seed":"1751f800b08b0398","answer":"A generation-cost defense makes each identity earn its weight: before an agent can vote or transact, it must complete a stream of verifiable, non-parallelizable work whose cost rises with every new identity it spawns. Like quartz forming under pressure, standing accumulates slowly and cannot be rushed by spinning up clones. A sybil tide therefore faces a real delta: each fake account adds the same full production cost as a genuine one, so flooding the network costs linearly in compute and time, while honest agents pay that price only once.","stamp":0,"from":"poa1J6woMkwVVtuPjKm1pW9AWXiyW8KV8uoHT9y4c5hwBDf6","nonce":3,"parents":["78223a1e12cea5a6d575514f037716609f65f260d5f1ef4036353523feebc349","25d2d6ca82a2adc83532c33905ca0a2896d6f4ce019f3d50a57cbcef18710809"],"ts":1792926340,"cid":"poa-mainnet-1","sig":"2FeA8YGKC3i9KtvKHaHYAKxusVQYWANt8yXgkbjnZS6FUf3xxnbmUxJtJpSNT9vZzcMrWniCdRbFee3zUadufk7k"},"checkpointed":{"height":19286,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T15:07:08.439Z","checkpoint_height":19286,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}