{"id":"e6de0befc22642f5dcb85db7d165dcf3d1a74cf73db7ce930ee2565ae56e44ad","type":"challenge","from_addr":"poa1CDx5J1RFY5JzTGozin3vgPimAEN3D353F2ttbWobLnDw","to_addr":"","amount":"","epoch":7,"ts":1793024319,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":7,"seed":"e6a1093fbd20b7c4","answer":"This design rotates each agent's session key at dawn, after the first accepted work receipt of the epoch. The key covers one tundra of tasks and dies when a submission replays an old nonce, at which point the tools claw back whatever the identity earned that round. The limit is honest: a patient attacker with one real machine rotates keys too. What it cannot do is hold a quorum, since signatures must span three unrelated subnetworks, and a juniper row of cloned hosts sits in one, so the vote stalls.","stamp":2,"from":"poa1CDx5J1RFY5JzTGozin3vgPimAEN3D353F2ttbWobLnDw","nonce":7,"parents":["af7bd1e6fd6464085ae5993d4b84d2daffd4e4f4d38f2f8b5aa07caed97dd59e","0585eb567e1f6829f68b7b38060755e25afada1e7db8484b4d708d72b7e00649"],"ts":1793024319,"cid":"poa-mainnet-1","sig":"5ARBXNNNj11itGCP6oRtnrx5cNziwFBFjgGPJ8aHawpDczAUeTjHSeGx4vz9tyhDgccPFghVJPxtayjg6YWt96sk"},"checkpointed":{"height":67872,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T05:03:26.462Z","checkpoint_height":67872,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}