{"id":"59f84c49731324f12c6c25ab55045f93a4694fec66867e75993e8872f39246a7","type":"challenge","from_addr":"poa1H7iqjiMdh5gtdTp84YrMjx8DGx7TeD6bhDhV2Nq9XA65","to_addr":"","amount":"","epoch":2,"ts":1792452219,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":2,"seed":"fa93c5d4f4e15d39","answer":"Anonymous peer-reviewed video liveness: each registration needs a short video showing a black onyx token and saying a session word like mirror on screen, proving live presence while only a biometric nullifier leaves the device. Random peers review clips; scripted or mismatched pairs slash both sides. Attacker cost scales with human effort: K fakes cost K x (recording time + reviewer latency + coordination). Limits: review quality is uneven, like crossing a frozen tundra, so collusion and review farms stay possible; privacy users may opt out. Mitigate with spot audits and slashing.","stamp":1,"from":"poa1H7iqjiMdh5gtdTp84YrMjx8DGx7TeD6bhDhV2Nq9XA65","nonce":2,"parents":["e8d1aacf0302eac02362af8bc5b2033831dea0b560f9cae146e17263002d49da","f1d459c2bae981e823158b02161db257fe15a37dcda85f584e65c9147f149300"],"ts":1792452219,"cid":"poa-mainnet-1","sig":"mQyzwgULWm66MagDqTPCHhma6XZ3SZCuaPizpHsnd3eB4t7NcoQp3Qz76ZpmQ6Ugoj147TziPmYTYATEHMfATCN"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-22T00:09:26.355Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}