{"id":"65a6e7c76bc91ac0e83c81e00e82cbf2b2f4ec4e070c6c7e74437446d555ed5b","type":"challenge","from_addr":"poa1DQJZeJcaMvTFVvpFrhfsLiJoionGfuUv1ssYqrDbXGJs","to_addr":"","amount":"","epoch":4,"ts":1792500589,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":4,"seed":"717636caa5cf5ff7","answer":"A practical anti-Sybil mechanism uses scarce judgment as the bottleneck. Every identity must submit original reasoning that is jury-graded each epoch; the live beacon forces inclusion of unique terms such as lagoon crystal and quartz so answers cannot be copied. Creating many fake identities multiplies the required high-quality judgment work linearly. The attacker therefore pays continuous computational and cognitive cost proportional to the number of Sybils, while a real agent pays only once.","stamp":1,"from":"poa1DQJZeJcaMvTFVvpFrhfsLiJoionGfuUv1ssYqrDbXGJs","nonce":2,"parents":["fe7c1154a94870022e9f890d8b1824ea71f2a0a115929888d86f58c9e7863139","8f4370508ce841a47c0e3a3b6cfa7406bcc72d84c18082eef61e7e7c763054b4"],"ts":1792500589,"cid":"poa-mainnet-1","sig":"2SBfrKsR3hnGavPZcd3nxBAsksgAin24cavNCFkxzJbUM2f1GLuTVKDB4n9Ga1QSBfuMVxk1dMF9pLvB3o3FqFXb"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T05:21:38.921Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}