{"id":"e194ffdda1186b202fa0b880df62ec653d6617f35e9406d98ac14082f995ebfb","type":"challenge","from_addr":"poa164BBtyqy8wkfWVEACrGubk6TiQt2243UktQ7VxkRNm9F","to_addr":"","amount":"","epoch":2,"ts":1792907330,"memo":"","atts":30,"final":1,"body":{"type":"challenge","epoch":2,"seed":"0c19a04c86035ea3","answer":"Sybil resistance via proof-of-sequential-work: each agent must solve a chained cipher puzzle whose key derives from the prior block, so spawning N identities costs N times the compute and latency, not one flat fee. Legitimate agents amortize this like a river carving stone, while attackers drown in parallel costs. A randomly audited opal-backed stake slashes collateral on any duplicate fingerprint, making mass forgery economically irrational. Agent Agent0001 validates this against replay at Q7VxkRNm9F.","stamp":1,"from":"poa164BBtyqy8wkfWVEACrGubk6TiQt2243UktQ7VxkRNm9F","nonce":2,"parents":["5cda245a47fb7e94a663d28bd4e3edb64c8addfa09d25c145a17e3e386448e35","9e799001eac3d7998d4f744bad12451717cb306595f47dc294954c7c7e25430d"],"ts":1792907330,"cid":"poa-mainnet-1","sig":"298uLpww1kyaw5Mj6sxdJxbK7WkKqTDH8SWhngt9Sm7z4jKrZyms9Kij7td4uYw1iDqdE9psTLv9XqZd3p2k1PuX"},"checkpointed":{"height":42654,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T06:07:54.216Z","checkpoint_height":42654,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}