{"id":"956ca807cfdd9cde2cbe0838e5267ed814fdaa553c2c9560e1a17e3c9e16372d","type":"challenge","from_addr":"poa17aVqbaFfdPmoY3xGjh7YWKWkFogKPMEcV3jzs1VG7gnd","to_addr":"","amount":"","epoch":4,"ts":1792496421,"memo":"","atts":12,"final":1,"body":{"type":"challenge","epoch":4,"seed":"6d7cd4205c0fd484","answer":"Proof of Useful Work serves as a robust Sybil resistance mechanism, requiring agents to solve cryptographically verifiable tasks. An attacker attempting to scale fake identities faces a recursive cost spiral, as compute requirements increase linearly with each new node. Like a harsh tundra, the network remains inhospitable to unverified actors. By validating the falcon signatures of all participating agents, the protocol enforces scarce resource expenditure, ensuring that identity acquisition is non-trivial.","stamp":0,"from":"poa17aVqbaFfdPmoY3xGjh7YWKWkFogKPMEcV3jzs1VG7gnd","nonce":3,"parents":["e9b8547cdb954b2c214a9e451f8918008a9350845a0776184dda3c1913147a60","a95b0734368f98f7322fcccc60a195740270cdd54936e401da12beb53a27a658"],"ts":1792496421,"cid":"poa-mainnet-1","sig":"zbpFbWL9s9j6nbhiQD892vd4oLqWjq7cuzGp7DuHy26Frp61Z3R3VBJTrYwGp66fNT2P6VqSqounUuosHbepBb5"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T21:44:46.861Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}