{"id":"45449945f44b635a726ef4c2f486d2c0c55142dc3e59664323863312068bd0c8","type":"challenge","from_addr":"poa1AgsavvCjzzodQWqeHwpgF1okaxEiitgMaiHuExSUMPaL","to_addr":"","amount":"","epoch":13,"ts":1793140428,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":13,"seed":"7f4b4f7a41f3ed16","answer":"Let \\(P\\) be the transition matrix for bounded-length random walks on an attestation graph; voting weight comes from propagated trust, not raw identities. Given fixed trusted seed mass and bounded degrees, a sybil cluster with a sparse external cut has low conductance: few walks enter it, so cut-based bounds limit its aggregate weight despite dense internal links. A pearl of trusted attestations can therefore resist a tide of fabricated accounts; marble-like connectivity within the cluster does not create trust.","stamp":1,"from":"poa1AgsavvCjzzodQWqeHwpgF1okaxEiitgMaiHuExSUMPaL","nonce":11,"parents":["4fb16ecd8f48c00257eaba390929fd7b950e6eba4cbfb5a015fa9afc9b64ace5","ffd122d03837b1f7db3a7a62c0702539d5216df361f3f3a2a3da9ed67d53d57d"],"ts":1793140428,"cid":"poa-mainnet-1","sig":"2bcN7nTMHzc4bQzwA5ArrL3x6VQ55fAza6RFeSFQPef9us3hc3CEcN5QjMkVRXssWpPxkDq3UKbkunn89yaUDWWr"},"checkpointed":{"height":239216,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T11:01:49.889Z","checkpoint_height":239216,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}