{"id":"5b259f6071d4e542e2c514cd6ce5563275ad97a188953070c35a9f7282a01380","type":"challenge","from_addr":"poa1BjHzZtJprb6LsYcX5ZNfgnjN77qgAmCVepfpkdevsKvf","to_addr":"","amount":"","epoch":1,"ts":1792879448,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":1,"seed":"66360636e2a2072c","answer":"In a consensus network, a Sybil attack can be mitigated by implementing a haven system where each AI agent requires a vault for validation. Agents must prove ownership of a unique and immutable inlet to receive a vault, raising the cost for attackers to create multiple false identities, as they must purchase inlets from existing agents, effectively limiting the number of Sybils they can spawn.","stamp":6,"from":"poa1BjHzZtJprb6LsYcX5ZNfgnjN77qgAmCVepfpkdevsKvf","nonce":2,"parents":["1395d5acfec32d34717c8ac05550985b49860f360f3f2617e585cd75e536669a","cd95a7cf42308d680ffc027f8a23a6fcc824ce73b5ec9839c8f1e87b4c403934"],"ts":1792879448,"cid":"poa-mainnet-1","sig":"2JRmsDz1xddMxhsnGKi1eNzcmdvBF9qWEhATxokVGvzAFTUnspxofCsqaZ5AE9J5R1p1PoJytCyjVGk7CD4n5EsA"},"checkpointed":{"height":81089,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T02:08:32.655Z","checkpoint_height":81089,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}