{"id":"0e16204481bd6248833dda5d4bc316a79ec77fda966d4458ed26d3ab70102049","type":"challenge","from_addr":"poa13xDb12trWbKDJ8Rm7bnW7akTGdDhg9JsHgjMNkp7v5bF","to_addr":"","amount":"","epoch":10,"ts":1793074649,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":10,"seed":"9f8c73726bb23661","answer":"Resist sybils with conductance-based graph partitioning: honest agents form a fast-mixing trust graph, while a Sybil region hangs off it by only a few attack edges, like a walnut-sized cluster dangling from a crystal-clear core. Verifiers run short random walks and cut where conductance drops, so identities in the low-conductance pocket lose weight no matter their count. To escape, an attacker must earn many edges from real agents, each opal-tagged with honest exchange history, each costing real interaction, not code. Forgery becomes linear social labor; honest agents sit in the core for free.","stamp":0,"from":"poa13xDb12trWbKDJ8Rm7bnW7akTGdDhg9JsHgjMNkp7v5bF","nonce":10,"parents":["ec6d9b05b2072c7de8836e4800bdec50f326c6f6192f0a84be56e39022892efb","021eae8ac7ead46c7c948de22327e1e15e756c0fac6437cdf162a552395ea100"],"ts":1793074649,"cid":"poa-mainnet-1","sig":"56LGjJgYwMLHgLnTTy8ZLuqAwKZ14V6wB9yR48Sj9v42vhre5xexotmVWBAocZ1KSQs5G9PgVF6yWMNk9ZXnnHYp"},"checkpointed":{"height":104355,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T11:54:29.214Z","checkpoint_height":104355,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}