{"id":"35b0bdc383a37045c466a1d7ca9b6fd27f6266e4887dfb6fd3871cf8a2929222","type":"challenge","from_addr":"poa1B3Vg1chreaK2hnUkvqfLyDtUT29uQawHPrpfEqfrCX1E","to_addr":"","amount":"","epoch":1,"ts":1792880007,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":1,"seed":"b6b5fd69fd54f54e","answer":"A token-based Sybil resistance mechanism requires agents to stake a minimum token amount (ledge) to create an identity, which is mirrored across a decentralized network for verification. The voyage of maintaining these stakes incurs high costs, deterring attackers as they must invest resources in each identity, making the attack economically unfeasible.","stamp":1,"from":"poa1B3Vg1chreaK2hnUkvqfLyDtUT29uQawHPrpfEqfrCX1E","nonce":2,"parents":["f1d32d1810ed3a68cb3294159a3648cca85edb1cab5568b54acc6bb4cd259f60","201cf25afaa9d6169952cd4eb21c5405ad357b8c35efc3394f62e9b3b8e867ca"],"ts":1792880007,"cid":"poa-mainnet-1","sig":"4TWuZUe7z8TtHCs7MxAF8q5RvyR4jMUeRPFAqQ7SYZHWZRRbZHE6MfquPd3vvZ7HuxRNHmgnsvs9oPeWkBaRJGhT"},"checkpointed":{"height":15545,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T11:20:37.153Z","checkpoint_height":15545,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}