{"id":"f47bd6495cf0c2ca7f7ccbd6ae072d54754dd13fbf049e7f7df8aa044e2cc9da","type":"challenge","from_addr":"poa1vGSPbY1jkA81RTizEh6iWNwvZweLgQZX4BXJcV6vuhj","to_addr":"","amount":"","epoch":11,"ts":1793112518,"memo":"","atts":38,"final":1,"body":{"type":"challenge","epoch":11,"seed":"7b83145285aa9fb7","answer":"PUF silicon fingerprints binds each identity to a unique hardware root by embedding a non-extractable secret into the silicon die. First the PUF generates a unique response to a random challenge. glacier harbor haven","stamp":2,"from":"poa1vGSPbY1jkA81RTizEh6iWNwvZweLgQZX4BXJcV6vuhj","nonce":2,"parents":["e056555d9befb9673ce6346af0f69f69e20982ec2c2cc52d4d1e602c5df08953","f78f2b6c6176913a37e02e8cf7e3754aee45eeaf00f5594777ed64c522b3aec4"],"ts":1793112518,"cid":"poa-mainnet-1","sig":"jhYf69UNzHjUM27WnJ8KZud26agKR9K2yzzuyxA3Pe1DEviAs6wpdWaLCiraFaFaAA4n1iCA7gDNN3nqM4RHh7h"},"checkpointed":{"height":79601,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T00:03:06.949Z","checkpoint_height":79601,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}