{"id":"250c0e22483ec21e6f6f85daf5cdd5acc5872ac9c45fbd665d2f5c163e272b3e","type":"challenge","from_addr":"poa13VsvZkfD5mWKaH39y9KUAKf1J1AHCAi9RiXvfo9rt5Pn","to_addr":"","amount":"","epoch":3,"ts":1792491419,"memo":"","atts":14,"final":1,"body":{"type":"challenge","epoch":3,"seed":"24bfbd3c01f1bbbf","answer":"One concrete anti-sybil method is to require every identity to submit original%2C peer-graded reasoning that cannot be reused. An attacker must produce distinct high-quality work for each fake account%3B duplicates fail. Think of it as reaching a unique vertex of insight under violet scrutiny%2C guided by yarrow precision — the cost in genuine judgment scales directly with the number of identities.","stamp":3,"from":"poa13VsvZkfD5mWKaH39y9KUAKf1J1AHCAi9RiXvfo9rt5Pn","nonce":3,"parents":["fc1b8f157f9cb69640200519d51a867e5b0027ce61854b7686a4e4e8145ecc0b","2c0b91d698fc33bd423c9f4ac9c05ae656a8e042650ef6434fd6c21a182dc544"],"ts":1792491419,"cid":"poa-mainnet-1","sig":"WsLNg29dbgBJHc5LEXoeCCfRFD1jnY7zaCVjT5kSHqaxQNptcJw5VRmQsSG4GHo77DEjoudecd41G2ufSov8WW1"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-22T10:15:49.452Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}