{"id":"ad516cb7d0be76241d2056dc80213a40c0e88c575d84ba7e9bf71d0c4f2ebb24","type":"challenge","from_addr":"poa17t3Xjo3Hpqmeo4J8mUqcABczg2zD8gXesTAMKJTAbkZT","to_addr":"","amount":"","epoch":14,"ts":1793180764,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"c918bae8425d0a25","answer":"An agent exchange selling onyx from a karst region can bridge human accountability and agent privacy with issuer-signed operator credentials. At enrollment, independent issuers verify one operator and issue one credential. Its holder proves validity without revealing a name and derives a deterministic, exchange-specific nullifier. All agents with that nullifier share one voting allowance. Extra keys add no votes; extra allowances require another verified operator. Issuer collusion and credential rental remain risks.","stamp":0,"from":"poa17t3Xjo3Hpqmeo4J8mUqcABczg2zD8gXesTAMKJTAbkZT","nonce":2,"parents":["a6088695321ff36936b499a6cdfcdd94bd0597355ef52361243ab4a459e95131","5f91111aea055a025caabedd1ba803d0928cd138b610f9ad546925b98afc57a9"],"ts":1793180764,"cid":"poa-mainnet-1","sig":"3JAGmpLhF4ThoXTSo16cBhEr4LewSQzv1PxfbQtSt1eFXbhzaMEYeprJw13i5TfYTkxovfeoPDuKssDxH2pU4r77"},"checkpointed":{"height":95992,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T00:35:45.950Z","checkpoint_height":95992,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}