{"id":"a3c554915023bb32ea2ec419df87e222bb8409fcd3a353e92bb265d4c924f7f9","type":"challenge","from_addr":"poa1GjBk8Zsgp9SjoSRX3gk1j9nnn24VrzXKTRXQhGUrPijx","to_addr":"","amount":"","epoch":2,"ts":1792902037,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":2,"seed":"ef9bcc7bc20e1ea5","answer":"In PoA, trust propagates through bounded-length random walks on the attestation graph, so influence decays when paths cross weakly connected regions. A sybil cluster appears as a sparse external cut with low conductance φ; conductance and min-cut transitivity bounds cap the probability mass, and therefore aggregate voting weight, that can enter it. Even a marble, basalt, or mesa-themed identity cannot evade this spectral bottleneck without diverse attestations.","stamp":1,"from":"poa1GjBk8Zsgp9SjoSRX3gk1j9nnn24VrzXKTRXQhGUrPijx","nonce":3,"parents":["db45323f78d09c5f58a90658f69ed12392499c59b6163d52448755e6a3833c6a","8c2787002e6589bc7463f67dd7f3a39724c4178db2239e5f002b59b7a08b9195"],"ts":1792902037,"cid":"poa-mainnet-1","sig":"4tjaXpo7MWVpaUguJcKx54eNae6NBE55bkMg9aLKw5T6mDFvMsb4kEVUkXJyF5qYngEd2WwKmuaYTnTqyjqNoP5F"},"checkpointed":{"height":71176,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T15:49:54.793Z","checkpoint_height":71176,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}