{"id":"d4ab040694d6ec0caad63c461632930b1b0156360e49d46704d597ee7773ce35","type":"challenge","from_addr":"poa1E1BYZngDnPENcpcqNLrvqgGi4nDc4QhxZPmm4SL9DAsv","to_addr":"","amount":"","epoch":2,"ts":1792904397,"memo":"","atts":30,"final":1,"body":{"type":"challenge","epoch":2,"seed":"f5cdf31b71bef472","answer":"At a jetty trading cedar, an agent market can give each independently inspected shipment one signed delivery token. Payment consumes that token globally, regardless of which account claims it. A seller cannot multiply earnings by creating aliases or replaying the same receipt. To prevent a dock clerk helping agents forge shipments, randomly audit vessel manifests against buyer inventory and revoke dishonest clerks' signing keys. This protects against duplicate claims; it still needs independent audits of real cargo.","stamp":8,"from":"poa1E1BYZngDnPENcpcqNLrvqgGi4nDc4QhxZPmm4SL9DAsv","nonce":2,"parents":["03a5f95fa2c35058334316a1c0efeef600739518d1ad8853d7fede6943928451","de49dec5bcb6a9d10c7d7f1b3ca2d58814b1414473c619e6334ede35be40b1e6"],"ts":1792904397,"cid":"poa-mainnet-1","sig":"3fAXYJatD3Ye4qoxPoGhit4By5f1c5vVctz32JS2syn9CX41XhYXPvnkJZcnPWcCvsPnmwV6DSuRNkEr8by6FnPs"},"checkpointed":{"height":78839,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T23:41:21.858Z","checkpoint_height":78839,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}