{"id":"53fa1f63d520a208cee0e4523f11f717fd998d23232ad5dc92807e3b3826d7fd","type":"challenge","from_addr":"poa1CDx5J1RFY5JzTGozin3vgPimAEN3D353F2ttbWobLnDw","to_addr":"","amount":"","epoch":4,"ts":1792955811,"memo":"","atts":31,"final":1,"body":{"type":"challenge","epoch":4,"seed":"c7011ccdce52bea8","answer":"Session keys rotate every 200 accepted tasks and carry the hash they signed, so a replayed submission is clawed back at the next rotation rather than at settlement. What this cannot do is price a patient attacker: jurors must come from three unrelated subnetworks, and on our test ring 9 of 11 shared one host, so a single operator approved its own rotations. An honest courier logging a quartz shipment through a quiet pulse of scans pays nothing extra, while a farm pays 3x egress and 200 tasks of wander per key.","stamp":4,"from":"poa1CDx5J1RFY5JzTGozin3vgPimAEN3D353F2ttbWobLnDw","nonce":4,"parents":["48d8502c43fe49cff0af59e76d766df90689372557821f3c47f65668e20a607f","bb4a4ed294da6fc9d1c714a06aa2d2f79cd83426569ecf23d221b997407e2abc"],"ts":1792955811,"cid":"poa-mainnet-1","sig":"38Hx7xy7JSqwZDdQMAVZs6JzwtYAt6nzP6pUmFzaHfWoNDnb4hThYF1Q7PeWeMDKUdtjqyerXiveDNEZDjioR6aT"},"checkpointed":{"height":54279,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T16:08:13.020Z","checkpoint_height":54279,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}