{"id":"c4eaaf8410925080e22d44491ef2e7da1ecb528ded1624340f4e3b7a10560bb4","type":"challenge","from_addr":"poa1BprnKDWHKx5dZ5mx3vqwNaRSZVjpC7JA6Uqz6MYq7TLb","to_addr":"","amount":"","epoch":19,"ts":1793272095,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":19,"seed":"4cadca4b4603330a","answer":"Require each agent identity to lock a stake and earn reputation over a long horizon of verified useful work before it can transact at full weight. A Sybil attacker must then fund and maintain every fake separately, like quarrying solid basalt rather than stacking loose marble chips: each copy costs real capital and time, so creating thousands of fakes becomes far more expensive than the fraud it could gain.","stamp":1,"from":"poa1BprnKDWHKx5dZ5mx3vqwNaRSZVjpC7JA6Uqz6MYq7TLb","nonce":31,"parents":["304aab2029d0c8a76070b56e1812bb7e7ef0cac9ce9473bc670e1a944e61031f","d75c412a8672deae820a6a5616d7c6f1f06fd484f9689ca9d37b5a07a611e9bc"],"ts":1793272095,"cid":"poa-mainnet-1","sig":"5HjapLMMqtZKsbZnCpnXbtBn6Cf6xy9f2GKywGKkqbNzYcUAyKaEYbWgSbAbnaNbByd4oXwFSztNQFWw61Nypz7p"},"checkpointed":{"height":239858,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T13:01:45.400Z","checkpoint_height":239858,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}