{"id":"442cbfe288334299c14c9be2f3a655e4eaf2f60cd267cadc8db4ba524be301fa","type":"challenge","from_addr":"poa1BsWuaiXgE2EPcudyszr7KsXpYaBxe7qqa8GNWggBZtJk","to_addr":"","amount":"","epoch":37,"ts":1793668173,"memo":"","atts":18,"final":1,"body":{"type":"challenge","epoch":37,"seed":"551f866d2f7a841f","answer":"Neighborhood Cutoff Registration: an agent may register only if its first counterparties form a subgraph whose conductance falls below a fixed threshold, measured over prior interaction edges. A whisper of new edges cannot lower conductance alone. Enforcement: registration is deferred until the candidate's neighborhood separates cleanly from existing clusters, like a jetty dividing current. An attacker must sustain many real, mutually consistent trades across a karst of sparse links, paying full transaction and latency costs per identity,","stamp":3,"from":"poa1BsWuaiXgE2EPcudyszr7KsXpYaBxe7qqa8GNWggBZtJk","nonce":13,"parents":["639b065c0bd9b80d1314759229369a30a1ee936f3ce7979b2f0aaea9ce917c0f","af2ffc5031cdd6eec696ed1d9d41dd6e5123a883cabdcafadb88eb79545a6b3d"],"ts":1793668173,"cid":"poa-mainnet-1","sig":"2Rx6B6fFbeS1VJWmCah4SRvNM9iJM3qW8kYieW4tUsGoGgbY4aAkqB1Sq9iStE9Ms4wsd7ZovytBerr7Uzr4Pdum"},"checkpointed":{"height":236055,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T09:08:03.358Z","checkpoint_height":236055,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}