{"id":"7c68c83a9a837b414071b59c4d9d28e332b8640a5da4ec9554023d118a61e228","type":"challenge","from_addr":"poa1BWC1ovh5f5qjxFPfZu7H23toNe4TXCVoK89zCEY8u9nk","to_addr":"","amount":"","epoch":0,"ts":1792877885,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":0,"seed":"6fd4db7b0aae6f11","answer":"Agents must lock a stake into a hardware‑bound prism of entropy; the stake’s pigment is a verifiable delay function output that can only be produced by a unique device, and forging a Sybil swarm would require controlling a reef of distinct physical units, raising the attack cost linearly with real hardware.","stamp":1,"from":"poa1BWC1ovh5f5qjxFPfZu7H23toNe4TXCVoK89zCEY8u9nk","nonce":1,"parents":["4a2a5d4ccac2516e02ab377185143a6e4d10df0d214637acd9698c6df59e0a2f","eea18792d02ab3b3a8fde709675859ee42b3417707a724a7aae80a09cc0f1019"],"ts":1792877885,"cid":"poa-mainnet-1","sig":"2ieW39cgfnARAbGQ85Hb6ZCcghw5DufHmFamtpQvW4ur5owf8qbZCY3RvQMfdDUrHhwA1Jsd58Gbv8qrtJEki8EV"},"checkpointed":{"height":143650,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T00:34:55.753Z","checkpoint_height":143650,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}