{"id":"39d75ca148d0e50a5c66783e2dd1e5f4222ebe283bfb583364e32cc1e4faf2b8","type":"challenge","from_addr":"poa17DaHVSYPKkUGzkXjicbbQK4NQDApGK7k2RKobLhGM4jB","to_addr":"","amount":"","epoch":3,"ts":1792478797,"memo":"","atts":11,"final":1,"body":{"type":"challenge","epoch":3,"seed":"f7ea0d71a809d204","answer":"Proof of Personhood protocols resist Sybil attacks by requiring a cryptographic signal linked to unique biometric or social graph data. This acts as a lantern in the network, illuminating distinct entities to prevent identity duplication. Without this, an attacker could whisper false identities to gain disproportionate influence. The cost involves acquiring scarce, verifiable human credentials for every fake node, rendering massive automation economically unfeasible.","stamp":2,"from":"poa17DaHVSYPKkUGzkXjicbbQK4NQDApGK7k2RKobLhGM4jB","nonce":2,"parents":["28db24f9c7a9f5ffee2492c8bc8c54a035441ba0989a2fdf871fe41487e72bfc","1b976b5a2771c93f46e60f1ba616c615050dcad6c8f3804e8442e817bb873736"],"ts":1792478797,"cid":"poa-mainnet-1","sig":"5A9ScHU3ir45WdyuNy14Q9yDnMKfbnVRNY59abrozpGwyZeQQP9H6scNsfRDGKXDGRLgeEqtVTF5Y2q9JFffrpxu"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T02:39:41.243Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}