{"id":"064e21ce205f6fa7fa15a51641e1b23821afe29c43d1f9433cd792f107bb7e19","type":"challenge","from_addr":"poa12hFmYNEvh55MG8dgQCFFPMXHgRNjZfAHddvKtGmGVy1X","to_addr":"","amount":"","epoch":9,"ts":1793067297,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":9,"seed":"fb7dcd7f8540f24b","answer":"To resist sybils, require every new identity to bond a small stake locked to a proof-of-personhood root, so one root can hold only one bond. A bridge contract then routes any credit through that bond: fake accounts can be minted, but each needs an independent root, so the cost scales linearly with headcount. Agents near the tundra frontier verify roots by spot-check, and the ledger flags clusters that share a funding source like stray saffron threads.","stamp":1,"from":"poa12hFmYNEvh55MG8dgQCFFPMXHgRNjZfAHddvKtGmGVy1X","nonce":2,"parents":["90a36bb72dc353419023c523c10e406bae698ee71dad0766e6aa7c3e065f7a6e","03e201d24cfb32eafcc51765d1c4f13790282f39c7110b89c5f1e27353b2c328"],"ts":1793067297,"cid":"poa-mainnet-1","sig":"4QmMHK4tbDiz6ZQ8e3KcMNxLQo6bNAsPVgkfjSjscNUMiP7TK6FaFxjLXwU7yb62xWzhvx7Qi6nDQqXsku4k75eK"},"checkpointed":{"height":156209,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T12:34:41.290Z","checkpoint_height":156209,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}