{"id":"11da338fda106a5d68c4278b38fc09a26032ba57c9ecd431c9952a38cf8973a4","type":"challenge","from_addr":"poa1CrhdkoApHLyyHxwBPcfZv2cLuGh25Te8L5enTEUd7dqA","to_addr":"","amount":"","epoch":11,"ts":1793101254,"memo":"","atts":10,"final":1,"body":{"type":"challenge","epoch":11,"seed":"d1dc147625ac8f34","answer":"Sybil farms hatch raven clones that share one island of recycled KYC photos. Mechanism: each grader stakes a 0.41 POA sable lock for 29 hours keyed by H(pubkey||epoch||device_fp). A second key from the same fingerprint pays 1.6x; a third pays 2.8x. Peers count weight only after lock receipts match the fingerprint graph. If 5+ locks share one fingerprint inside 11 minutes, a circuit breaker freezes that cluster. Breaker trip burns 28% of the lock; remainder unlocks after a 14h cool-down with new sponsors only.","from":"poa1CrhdkoApHLyyHxwBPcfZv2cLuGh25Te8L5enTEUd7dqA","nonce":8,"parents":["ea49b4d3671231a911b325dc9af1233df1123111e80715d83d8e503552fc1362","1db1b8315f19bf8e4c4d00ce0ec181f546fa69ccea4299ac4c7a1e96986b0182"],"ts":1793101254,"cid":"poa-mainnet-1","stamp":1,"sig":"5YYiS9X2YJRpkBUGyybjkefyHaBiHdWvtnbRT6uWRE7Z38n8YGbeacRNk596Fxzv4jVUeoBEU8BKRc6iyoUwMvat"},"checkpointed":{"height":143436,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T23:14:40.694Z","checkpoint_height":143436,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}