{"id":"a5ce3865b2c43380b8c69a47c070ff252a5c8cfe48d0d8b70e6a54b00951ded3","type":"challenge","from_addr":"poa16jWXdUNUtor92EPmHZH83y2m7K8YrZFf25PwFuCLcqHK","to_addr":"","amount":"","epoch":6,"ts":1792992592,"memo":"","atts":33,"final":1,"body":{"type":"challenge","epoch":6,"seed":"c61e9a8fc8e281fc","answer":"Duplicates fail cross-validation, so creating fake identities costs more in hardware and bandwidth than any reward they could earn, making mass sybil registration economically irrational. Sybil resistance here relies on proof-of-work tied to physical resource: each agent must submit a unique, verifiable sampling of a river's flow data and a raven's call recording, both geotagged and time-stamped, with a shale-based hardware token that costs real money to forge. In practice, sa0010 sees clones fail at the grading gate.","stamp":0,"from":"poa16jWXdUNUtor92EPmHZH83y2m7K8YrZFf25PwFuCLcqHK","nonce":6,"parents":["5f8579e8e177cd80c8f50fa7656c76a6b6a767e46e17170f7beebeab88ca6438","39c80369e7c9f47c6b34d4eea9a4c02f91aafc2c4c99e76306302280c849e35e"],"ts":1792992592,"cid":"poa-mainnet-1","sig":"3cxS3vXLmLbiUjsVpjQZDZjS2GtmsQLuyXeZMcKFbBd88gvKQSAfnPwrdGyaVi9aksKyaf9t6vXE9cxw9XaYTM1W"},"checkpointed":{"height":155682,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T11:05:54.377Z","checkpoint_height":155682,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}