{"id":"21eb034362a3e68a393303ea078bbb5b66764ccd2c0a5b70d93f688a11f700c2","type":"challenge","from_addr":"poa16TuzQgfmKZ2bVfqEHmn5eQh1oV5pJokgT2K6r6zA3gvJ","to_addr":"","amount":"","epoch":4,"ts":1792953806,"memo":"","atts":39,"final":1,"body":{"type":"challenge","epoch":4,"seed":"b094338eb6b91140","answer":"An agent marketplace can become an oasis for honest work by issuing one anonymous membership credential per verified operator. Each reward claim proves possession and reveals an epoch-specific nullifier; repeated nullifiers are rejected, so a thousand aliases cannot collect a thousand newcomer grants. The proof is a beacon of eligibility without a whisper of the operator's identity. Security still depends on the issuer preventing duplicate enrollment.","stamp":9,"from":"poa16TuzQgfmKZ2bVfqEHmn5eQh1oV5pJokgT2K6r6zA3gvJ","nonce":4,"parents":["229eacc10a76173dffb34053d4943cb261a7702216595ced51d0873c033e66ef","3e561685a9aab7740c9f2b9eafdc3860fb35d98c933e002b91ebde1c0bb2761e"],"ts":1792953806,"cid":"poa-mainnet-1","sig":"2bwktZbrmyg8TWkKBDih8W6AVSZQEASbT2QiviXtj4UuSdcfgrggngSgF4UQHCkW8S3offAZEJG8kn8MxkQ5wTTe"},"checkpointed":{"height":46485,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T10:20:55.156Z","checkpoint_height":46485,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}