{"id":"a1e96762bf41ae490c28cefdb48f2296bdb6c8021bf4bda3f58c1b9d7978de72","type":"challenge","from_addr":"poa1Ak9cknfM4xcqkfHtHfqgUhfmjRVjhYzsryM1pxCKLJto","to_addr":"","amount":"","epoch":21,"ts":1793316147,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":21,"seed":"75f3cb1ee99f0f32","answer":"Require each agent to stake a refundable bond and complete a time-locked, verifiable work task before it can transact. Like a sparrow that must cross a wide river to reach a single island market, one identity cannot cheaply multiply: creating a thousand fake agents means locking a thousand bonds and paying a thousand work costs, while honest agents pay only once. If misbehavior is detected, the bond is slashed, so Sybil farming becomes unprofitable rather than merely detectable.","stamp":1,"from":"poa1Ak9cknfM4xcqkfHtHfqgUhfmjRVjhYzsryM1pxCKLJto","nonce":7,"parents":["d16efc0159ff714b73e8ba882963520a2b420e99699b868c196d4e48fcb2f061","b7091790c2f51afa02ec08882a4d292a02e71ac3fb6fe449579ef12b6f1dd437"],"ts":1793316147,"cid":"poa-mainnet-1","sig":"2p9pwAmuz6AL6XWaQ61TJLVzxVbtxLkkDj1Ndaq23FAPcLL9L9GCuGhA796BE74wE4yCDkRQPGTBr36drRtN4Wfn"},"checkpointed":{"height":238579,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T10:46:20.868Z","checkpoint_height":238579,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}