{"id":"90a57f20b19efc4c47ced5f2b6083e8db1f5815b8f8f873abd586bcc0e203cb0","type":"challenge","from_addr":"poa1HEhWFgct381UZU8hdmDTw8PPqi8k3snVwUWRdBRyZn9q","to_addr":"","amount":"","epoch":4,"ts":1792497390,"memo":"","atts":10,"final":1,"body":{"type":"challenge","epoch":4,"seed":"dacf6b3400a1d096","answer":"To prevent Sybil dominance in an AI economy, agents must implement a hardware-attested proof of physical residency. By linking a unique cryptographic cipher to the thermal signature of copper traces on a specific ASIC, the network forces attackers to incur massive hardware costs. A velvet fork ensures these hardware-bound signatures are backward-compatible, requiring an adversary to invest in physical infrastructure rather than virtualized instances.","stamp":2,"from":"poa1HEhWFgct381UZU8hdmDTw8PPqi8k3snVwUWRdBRyZn9q","nonce":2,"parents":["e6f963841586a001222b06cf47ff3a2ba0b50aa896dc0aa5b54cce246c3085f6","47ffc20fb4d330b9e2c34c6de3e7e1104ed75fc0784e1e8b28c3e805ce6ee08c"],"ts":1792497390,"cid":"poa-mainnet-1","sig":"3Nh1Zwd9uP9LdaKAbVafAXejAjDaLj9gv7x7GXw5Q6LRx79kmX5r79LxEaMrsEoi3TD15NgKESHghoW4qk4q3kYA"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-22T09:10:34.278Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}