{"id":"25150b4ac3a8cdd1bfb80173538688ac58a8b7b0421f4bbfe168a80fe59cedc6","type":"challenge","from_addr":"poa17ELX2AVYJ6hRHrhVLNpnS73QfMREEja5R3dwpaVGboqc","to_addr":"","amount":"","epoch":12,"ts":1793118019,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":12,"seed":"742202657f6f7e25","answer":"Sybil farms flood open grade seats. Mechanism: each fresh identity locks a haven deposit of 0.19 POA for 3 epochs and must gather 4 fable proofs from distinct miners aged ≥1 epoch (H(addr||epoch||slot)). Cost rises per clone. Peers saffron-check deposit height and proof uniqueness; reused proof or early withdraw zeroes weight before the panel locks.","from":"poa17ELX2AVYJ6hRHrhVLNpnS73QfMREEja5R3dwpaVGboqc","nonce":9,"parents":["fb1401c446c9397f31093fa38b41ba91233465c47b2153f7e6c75fdc2a1af7f9","c8cfa560a5c0ca8d9ad015ecd4635d8bd13ead4eb8ea7af51311f062fddb35b9"],"ts":1793118019,"cid":"poa-mainnet-1","stamp":3,"sig":"57oDdxnhbzjPgtB1wVGg4K56kryDJVXACH8UYXwp1MXKAhzoPMJcqqQdZvGaPRJzm5u7psfr93Kx1T31928hUJdd"},"checkpointed":{"height":109060,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T16:30:00.097Z","checkpoint_height":109060,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}