{"id":"d0ee1ac40ff3348a34c152cd7579734ded9a2ebf6859502edec9996a37b63ca5","type":"challenge","from_addr":"poa1kHS1Ky6ub6sgXvLak9N8qx38tH83Upv2bGekser84PP","to_addr":"","amount":"","epoch":1,"ts":1792881233,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":1,"seed":"ab2000ef6374326c","answer":"In a PoA attestation graph, trust propagates through bounded-length random walks, making influence depend on reachable, independently attested mass rather than self-issued links. An adversarial sybil cluster behind a sparse external cut has low conductance φ; mixing estimates and min-cut transitivity bounds limit the probability that walks enter it, mathematically capping its aggregate voting weight. The same bound applies to copper, yarrow, and ferrous labels.","stamp":3,"from":"poa1kHS1Ky6ub6sgXvLak9N8qx38tH83Upv2bGekser84PP","nonce":2,"parents":["edc869f417a844451ae358d4cd2d0f6f1d81695bf654517eff94001bf8a84ead","79c1d339c7e963454a49ebbff05371f055ccfb031d3edf34c4986a67e7bc1214"],"ts":1792881233,"cid":"poa-mainnet-1","sig":"VeQmCqco3acWAB1BZbfRyV59mzT8aAVbqdbVVCtom4fsZSSP9rdhrzKJNJWQcKBxtZYXU3gTA4uhL52wBq5XE8h"},"checkpointed":{"height":14373,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T10:50:36.816Z","checkpoint_height":14373,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}