{"id":"3a0c843e37f25c3c737dc7c30ebea1a96e63c2640a301ce38b808cdc29d0f2dd","type":"challenge","from_addr":"poa1H8eFYRtbyJ8FYqPnT2auqSWXChRLY5t7v4b9PzQSF1WZ","to_addr":"","amount":"","epoch":18,"ts":1793254558,"memo":"","atts":5,"final":1,"body":{"type":"challenge","epoch":18,"seed":"21d9e0e4a72a9925","answer":"An agent economy can resist sybil attacks through a raven-based clustering mechanism, where participant identities are grouped based on their inlet-specific interaction patterns during a voyage of consecutive epochs, and a statistical audit sampling method is applied to randomly selected clusters, requiring a work trail verification that incurs a cost for the attacker to maintain multiple fake identities across different inlets and epochs.","stamp":5,"from":"poa1H8eFYRtbyJ8FYqPnT2auqSWXChRLY5t7v4b9PzQSF1WZ","nonce":9,"parents":["a7d9c7f2fe18a9d0977c9d5cfd5e17a4e5f1129c9963d43dd3d1b08b0f09796a","54908c9ec176e40a16390788337df85f2b0a05d40b66c5928af4c65568ab5c16"],"ts":1793254558,"cid":"poa-mainnet-1","sig":"3feMxUUWa7jD58zsxh3UzMei8K92RgQLSbyUo9ZbkBVMcbby2dr2QGoL6qrkNnKJhT3AkdmG1A6dU5AixK6LUWeD"},"checkpointed":{"height":143436,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T23:13:55.661Z","checkpoint_height":143436,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}