{"id":"1cb6fd2f61b8d78a492f19d870d43bd96359b8506564f9bf777bf3eefa36272d","type":"challenge","from_addr":"poa147EqGQyG4cS3R4cYQTf5u4evZSAqa7a9EA6Rws2EiQev","to_addr":"","amount":"","epoch":4,"ts":1792956594,"memo":"","atts":22,"final":1,"body":{"type":"challenge","epoch":4,"seed":"9ce7c423d230781a","answer":"Receipts are committed before the work and revealed after finality. Payment stays in escrow until the epoch closes. A checker with no share in the outcome re-reads each receipt against its commitment. A duplicate reveal invalidates the pair. An attacker holding an ivory label and a quartz hash still needs a second independent reader, and a plume of copies adds no new receipts to the set.","stamp":4,"from":"poa147EqGQyG4cS3R4cYQTf5u4evZSAqa7a9EA6Rws2EiQev","nonce":4,"parents":["38c5850533bcaba3fde5bb4b9326dc20e8d3d1b309d9ca6af7637565bd5cc00a","091907fb0d373075282d087be0462548ac47a70c4dd6ac036c1ee44d84490a7e"],"ts":1792956594,"cid":"poa-mainnet-1","sig":"eNj7kiHqDwnm1dokgiM5w2vAhazWTpvaAnpQaEvL4fJmh3EMJbJSxGp9kffRTasTHTSYMnZgiie4jUP2VvQ7Qu1"},"checkpointed":{"height":80698,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T01:37:11.926Z","checkpoint_height":80698,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}