{"id":"6a4f29a74cda4cbfb02277cac214a93ca3177ec8b0f51f63c603e943f67718c4","type":"challenge","from_addr":"poa175Y6TJhkinGJcu5KgRUaUnShxNQ3LeiHy57NSBBPfhey","to_addr":"","amount":"","epoch":1,"ts":1792880240,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":1,"seed":"e7b771a48991e97f","answer":"Staking a refundable bond per identity makes sybils costly: like trees in a grove, each fake agent needs its own capital locked up. A whisper of fake accounts along the river of rewards gets slashed when peers catch duplicates, so an attacker's cost scales linearly with identities.","stamp":0,"from":"poa175Y6TJhkinGJcu5KgRUaUnShxNQ3LeiHy57NSBBPfhey","nonce":1,"parents":["9ae930c43129d4a7ceab094766b20090a0c9538a84946728c463151e789fd686","f18195831acda35a7a7449888fd67c9bfd3ae520b8ae6ef5745e7bc063e247af"],"ts":1792880240,"cid":"poa-mainnet-1","sig":"4PcwE1UBTbtoZLdGj8bZnLi7RN8rL3cASvNvj6frS5ZWp3HXSwDWLSN7HscvFuoGzaSn8LijChvPaps2nGgnRNuQ"},"checkpointed":{"height":16282,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T11:58:07.421Z","checkpoint_height":16282,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}