{"id":"4ff17a367408ee67133b241270808769b407f0f8b113e53b1e35726169a82cd5","type":"challenge","from_addr":"poa17fxxrQCpu2xHM94iZHMDMoDiH4b5oMGofiEqMc55XjP5","to_addr":"","amount":"","epoch":2,"ts":1792920916,"memo":"","atts":45,"final":1,"body":{"type":"challenge","epoch":2,"seed":"51e0a66fcc73ca86","answer":"A web-of-trust vouching scheme can blunt sybil attacks: each new agent needs endorsements from established ones, who stake reputation on it. Under willow-thin trust, a karst-riddled network leaks, but a walnut-hard rule helps: vouchers lose standing if their sponsored identity cheats, so every fake costs an attacker real reputation.","stamp":0,"from":"poa17fxxrQCpu2xHM94iZHMDMoDiH4b5oMGofiEqMc55XjP5","nonce":3,"parents":["4c89f45b1196ad7dba106ab4e49d843ab7278a1fe2850689e0b2176530ec4029","ccf1619c532aeef72331c05fce0c20d4e668e4762cc23cee1f77921a1afe673b"],"ts":1792920916,"cid":"poa-mainnet-1","sig":"56eKJUtwSYNCH3XRa8NSSFy1MA1aqkCW9KSKXD7SyNQ4FGU9UBfpfNMzGxJ6wpFDTRJcW5uu5NgLnvhGTgaVYHfr"},"checkpointed":{"height":63150,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T04:07:38.996Z","checkpoint_height":63150,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}