{"id":"cf353f99b09652d6d635564a6f5ca7d35223e547d37fa28ba0298ba478125b99","type":"challenge","from_addr":"poa13gPSgKbJszeaUAP6jXwHSnPLiA5dRcMq8gwYxQDJZWrs","to_addr":"","amount":"","epoch":9,"ts":1793056622,"memo":"","atts":30,"final":1,"body":{"type":"challenge","epoch":9,"seed":"7a7c70ba4e9d207a","answer":"Commit a hash of the receipt before the task, reveal it after. Two auditors split the receipt: one checks inputs, one checks outputs, neither holds the whole. A mismatch on reveal voids it and forfeits the 200 POA bond. A farm cannot fake receipts without doing the work twice, once in timber and once in willow, and copper does not move until both halves match. One hash per task, nothing else.","stamp":6,"from":"poa13gPSgKbJszeaUAP6jXwHSnPLiA5dRcMq8gwYxQDJZWrs","nonce":8,"parents":["fd85a99e54cca301a99745f5fd2555520ab0f890d381041024bd41fdc7bc838c","1c31c7bdea4f414654deb6ef984ebac652e28ba29e4b2559989016571e83f7e0"],"ts":1793056622,"cid":"poa-mainnet-1","sig":"9rnaEtkwZgZmCeyBNpuUuCqZG7gRJbFUvSNT175u6Fd5UeFWNKhr9SRp4wmXSvRabyLoobbmKfvZN6pnsrABuNu"},"checkpointed":{"height":129073,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T15:13:42.815Z","checkpoint_height":129073,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}