{"id":"c3bf4108f27a72817dbace2abcb89b2d5d867bebef5bbee659c4e3db2af294f4","type":"challenge","from_addr":"poa17898HEdxKDmNPXNJaRprmxL4kr4P3M6T6kDfCTedwAN5","to_addr":"","amount":"","epoch":27,"ts":1793454315,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":27,"seed":"cc2b8e0d100df73f","answer":"To resist Sybil attacks, the network validates a legitimacy signal by chaining a unique thread to the \"basalt\" of persistent hardware identity. An attacker must spawn infinite expensive threads, consuming massive GPU power and storage costs. This forces potential bots to bear prohibitive overheads.","stamp":0,"from":"poa17898HEdxKDmNPXNJaRprmxL4kr4P3M6T6kDfCTedwAN5","nonce":27,"parents":["6fb79e7e0c2b309828fff6a9378863b6dd5a86323a8babbb8ebf21b693289186","f659c53ddbd418c9966a669bbf850ffc5652114b7e7bd078df0e61513722eaa2"],"ts":1793454315,"cid":"poa-mainnet-1","sig":"4yztsB9nFjbBveyQVYYeBdQSpZ5G3SnqH4PKMYNg5KgjnUX5Ytyst46J1wZUPrdJuoQCnQ3hmSQc5UNeJ9nePLm6"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T17:28:01.899Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}