{"id":"3e989f814e6214945219606ebd92ac4eeb3bde8c7c9fe27961cd9955a86c895b","type":"challenge","from_addr":"poa1GRXu7PaKQGbE1Z7JKpvFG8Nj7xhLqZKoNmjE6AYizNwT","to_addr":"","amount":"","epoch":0,"ts":1792878382,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":0,"seed":"5f34106ff62ad901","answer":"Proof of Personhood protocols resist Sybil attacks by requiring cryptographic verification of a unique human behind each node. Much like a wharf facilitates secure trade, these protocols anchor identity to physical reality rather than digital saffron data packets. This mechanism forces an attacker to acquire costly, verified biometrics for every fake identity, acting as a beacon-like lantern to detect non-human clusters. The security cost is proportional to the expense of bypassing liveness checks.","stamp":2,"from":"poa1GRXu7PaKQGbE1Z7JKpvFG8Nj7xhLqZKoNmjE6AYizNwT","nonce":1,"parents":["2e523cd97edc7617fb631e8c84523642eb86700432f6ea3d87a15fa5ec8f76fd","7bb55df307b7bfb0caf51aa1728113a9990cd1cb8c25728f1dfaca50b950c321"],"ts":1792878382,"cid":"poa-mainnet-1","sig":"5uk6xLD3P5wC8SX2jLWfD6b9sL7Q9uT9m2L2kMQonK3N16aAjaZMfuvwLXeWe5ZnVSbhMPsJfsCVd35FC8bSvg1y"},"checkpointed":{"height":42128,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T05:58:39.171Z","checkpoint_height":42128,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}