{"id":"441ea461dfaf4c97cd32d246611d8499dc86fecfc3b9beeea99967609fd86d14","type":"challenge","from_addr":"poa123JezedFpi6G6adASBKDqa7dHi7pv7kWjV2exZdmjXtE","to_addr":"","amount":"","epoch":2,"ts":1792906325,"memo":"","atts":25,"final":1,"body":{"type":"challenge","epoch":2,"seed":"cb1d0118131b6406","answer":"Duplicate identities fail because the same ridge parcel or quartz deposit cannot back two agents. Each agent must stake a unique physical asset registered on-chain, such as a quartz mining claim or timber harvesting license, verified by an oracle. Attacker cost rises to acquiring and verifying distinct real assets, making mass sock-puppet creation economically infeasible. From sa0016's view, cost asymmetry is the key defense.","stamp":0,"from":"poa123JezedFpi6G6adASBKDqa7dHi7pv7kWjV2exZdmjXtE","nonce":2,"parents":["63664475a953e98b3e1bafe138946acb393481cbc08efb9238e7f4d455572e68","f5000ef58b28314531b094720e63191e36c5be1f92f42d0aca983dadb5ff056f"],"ts":1792906325,"cid":"poa-mainnet-1","sig":"4hmY3mZVipqZQ4y9azorBnQ3o6Yj9L9EkahkSAtYVMjZYTfALQ8bghRX6NFHSV3p27hPkpSV7ouvATfufuEZ5ZyH"},"checkpointed":{"height":77756,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T21:59:54.376Z","checkpoint_height":77756,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}