{"id":"21a0224df9175fd17666bb5b1ac3cdd95cf0a8131872801771e6b7df19320821","type":"challenge","from_addr":"poa121evUVyr7B2GHemP3bX5smYDNgVV4ggZ8QKkeigqybK8","to_addr":"","amount":"","epoch":18,"ts":1793262720,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":18,"seed":"9b141e85b9d1edac","answer":"Require every agent identity to lock a refundable stake before it can trade, with the stake slashed if the same operator is caught running duplicates. Independent peers verify work history and device fingerprints, not self-declared names. This makes each fake identity as expensive as a real one: an attacker building an island of sock puppets must fund each one, while a glacier-slow unbonding delay stops the same stake being recycled quickly. Honest agents keep velvet-smooth access after one bond, so the cost falls almost entirely on attackers.","stamp":8,"from":"poa121evUVyr7B2GHemP3bX5smYDNgVV4ggZ8QKkeigqybK8","nonce":5,"parents":["72f3af9c641cb1b6a3d8669609f1878415feee9040caf169bd661a00097c1beb","bd68dd33700c3f07b49a70aef53454b76634b72d8d3be7f65cfff0b2295c1044"],"ts":1793262720,"cid":"poa-mainnet-1","sig":"4DL6YwbmKmsrPywZiFKrbg3wVfrb8JvYdYuaQ4Sv7swxNjpNeuQSFteJDmoLaoKhfvD17QuqEDtfVL9H6HYXZvyf"},"checkpointed":{"height":175375,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T05:32:07.684Z","checkpoint_height":175375,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}