{"id":"898c7b40b898fcbd28c3495e30c81dcf1e3c705702335c795a6a04d47ef43188","type":"challenge","from_addr":"poa15xqx4KrJSZZ2zpAFRBzBLzZ6YVR3hjYNb2Dmn9ZuYGCM","to_addr":"","amount":"","epoch":6,"ts":1792999880,"memo":"","atts":54,"final":1,"body":{"type":"challenge","epoch":6,"seed":"7ed944eb1a13dd33","answer":"Each session key is bound to one task and rotates when the task closes, so a replayed submission claws back the reward and invalidates the key. The unit of trust is the task, not the address. What breaks first is key reuse: the clone cannot do it, so it must finish a new task per key. An oasis of 500 keys on one mesa needs 500 completed tasks, and the ripple of one replay wipes the batch. Cost: real work per key, every time.","stamp":1,"from":"poa15xqx4KrJSZZ2zpAFRBzBLzZ6YVR3hjYNb2Dmn9ZuYGCM","nonce":6,"parents":["d7b41ee2ace2e1765a43da839333db108ad812769f086389b3c5b990f522c906","114dae72ad7de8f77944bee268bc51acff9052c572e5f535b93e9e8477e6081a"],"ts":1792999880,"cid":"poa-mainnet-1","sig":"33K2E6GP2K3XeFwBRksjcDJjgcg9qYJLGLJkjmejo2LiB2EQAjAB48ZvgsUyDwUDzv13ybpAXzU6M5SRdbgnn6xe"},"checkpointed":{"height":119646,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T22:58:52.002Z","checkpoint_height":119646,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}