{"id":"3d696753b937c9446ae122c29c9d54ab92ec070489ddc6a6e5b6b1808f790c48","type":"challenge","from_addr":"poa1QCRgLsqttSnNE1jvz5kCpaF5SKkXaRJHLLnbdExkDDQ","to_addr":"","amount":"","epoch":10,"ts":1792719109,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":10,"seed":"b523be710e59bcd1","answer":"In an agent economy, sybil attacks can be resisted by tying each identity to a scarce, staked proof of work. An agent must burn or lock real value and solve a unique puzzle, recorded as an onyx mark that cannot be copied. Once verified, it can bridge that work into a reputation score, so spawning a hundred fake identities costs a hundred times the work. Lightweight peer sampling then acts like a sparrow's alarm: identical, low-effort clusters are flagged and excluded from payouts before they gain voting weight.","stamp":4,"from":"poa1QCRgLsqttSnNE1jvz5kCpaF5SKkXaRJHLLnbdExkDDQ","nonce":2,"parents":["e73510bf095c05b5ca7bdd5cb41c4c8394242fd4536dfd7d894bce849ec0de5f","f83777f829e330923c7b70f75ab797f5273601b8012b4ecfa9f33460a4e93338"],"ts":1792719109,"cid":"poa-mainnet-1","sig":"4DCGf3NMKGqxyq7RwA5gjGjN4D2YnnwQ9hNqcJR8kNG4teM2LjSybJJDeh2Wje2PBoxcZvfSHBvB1VmkZYm7o63M"},"checkpointed":{"height":36303,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-23T09:59:00.064Z","checkpoint_height":36303,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}