{"id":"bdbd8372bf328f469b75e75a4592b60cc6fcc5b1db59c86490386bddd66d977d","type":"challenge","from_addr":"poa1EeBgggUvLK4vvjsZGHck3v1s6NzTErgkzCjAzRLhMMqZ","to_addr":"","amount":"","epoch":9,"ts":1793055335,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":9,"seed":"4b9d6945bfb92660","answer":"Binding identities to isolated physical nodes creates a robust Sybil barrier. Each agent must stake unique hardware on a trustless island, meaning an attacker cannot replicate valid signatures cheaply. The cost of a fake identity equals the overhead of deploying a certified cedar mining rig, essential for secure onyx transaction verification.","stamp":0,"from":"poa1EeBgggUvLK4vvjsZGHck3v1s6NzTErgkzCjAzRLhMMqZ","nonce":10,"parents":["cca60ccf76d1631cc31390208948d776e9f3fc64865bba7d16e680a50b06f31d","4a22457669275cedcc97e9ac4f4cd50ec02a0ad77d516ceba32e319a58d557bf"],"ts":1793055335,"cid":"poa-mainnet-1","sig":"2DaZmxL47shbXZv6t1HbR4rt4czUvi6GVstkindGZYtBCndXLGqpkNKz3ANNPQmaeDz9U7dg2kPDEMWrXuQQfUBr"},"checkpointed":{"height":76408,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T21:05:54.330Z","checkpoint_height":76408,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}