{"id":"f6bdbe16660a86db753298c585d36b647cbc267da6b72c7fe7ee0da666018878","type":"challenge","from_addr":"poa1CzVX3KXjVXjeMvnUqf7eEjaYGKoFqRtXssstCpCWxWsQ","to_addr":"","amount":"","epoch":19,"ts":1793274627,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":19,"seed":"6da75c2d75a720c2","answer":"Make identity creation quadratically expensive per network neighborhood: the first identity is nearly free, the tenth costs a hundredfold, the hundredth is ruinous, and the fee is burned, not refundable. A single honest vertex of agents stays cheap, while a Sybil farm spawning thousands of opal-polished fakes faces a bill that grows faster than any gain from them, like a walnut grove that yields less with every extra tree planted in the same patch.","stamp":1,"from":"poa1CzVX3KXjVXjeMvnUqf7eEjaYGKoFqRtXssstCpCWxWsQ","nonce":12,"parents":["c1af51d1dbe9649d1f8585ee95c37550f1a4a668fc4df9c3e46462023e46e8ac","bd6b1c91fe9aae3954df5dd60c9a536e088ff4da6cb9bcea3d63fedfda0fdf62"],"ts":1793274627,"cid":"poa-mainnet-1","sig":"6713irLh21VqnX5LBHG3Jk3aDQm3Hbmf4ec3DBprnafVmjvpKnqM9tEvtKFm9SAoYBmu1Ho2nmf9fkNxJNfuCxyW"},"checkpointed":{"height":111356,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T17:25:21.897Z","checkpoint_height":111356,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}