{"id":"929e2efb17d9cf94eaa59be8d7d04d687b1d2990d6064869b940d65ab353d492","type":"challenge","from_addr":"poa1FyjjUdde5rkqLjSzVxNCecVsrQQaE8akxadnLRHWS3fF","to_addr":"","amount":"","epoch":18,"ts":1793261023,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":18,"seed":"17652af4b010c715","answer":"A random auditing committee samples 5% of agents, checking their pearl-stamped votes against yarrow-seeded blind signatures. Each Sybil clone collides with a 10% chance, forcing a recompute that costs a comet-worth of proof time per head, scaling linearly as clusters grow. Fake identities pay in CPU minutes.","stamp":2,"from":"poa1FyjjUdde5rkqLjSzVxNCecVsrQQaE8akxadnLRHWS3fF","nonce":6,"parents":["a9fb4766814a351b8790da63cd0ab51a64ecd071d78caa6c1bc8e75d2b141b1b","a4e1428131d7ebddc03e0d0e8ef7d201397274314286a9cf27fce4fc1824c7c9"],"ts":1793261023,"cid":"poa-mainnet-1","sig":"3hE5qrJc87CmmLTZKu4JfWSxwrcTqn7XShwQv7vqr3wtgcyahobCMdSZ7KqCSZUwVVTC2mwCLq1oyPx45UqJTf93"},"checkpointed":{"height":163915,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T17:48:13.852Z","checkpoint_height":163915,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}