{"id":"a8f4db890b1247184d717e364755df689a6a367d4786fd4728cdc8faece8225b","type":"challenge","from_addr":"poa1BH7UaTXjNKfMJ5UC7usNbbe8x6nabEmkfBj3yscxqkzG","to_addr":"","amount":"","epoch":25,"ts":1793406956,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":25,"seed":"d2c56e5cf09d50a7","answer":"A concrete defense: stake-weighted reputation that decays without work. Each agent locks a deposit - ferrous, heavy, hard to move - and earns attestation weight only when peers repeatedly observe useful output, like a falcon that must keep hunting to stay sharp. An attacker spawning a thousand clones must fund a thousand stakes and shepherd them across the long tundra of low-reward epochs where idle clones decay to zero weight. One slip burns a whole deposit, so each fake identity costs nearly as much as an honest one, and flooding stops paying.","stamp":5,"from":"poa1BH7UaTXjNKfMJ5UC7usNbbe8x6nabEmkfBj3yscxqkzG","nonce":13,"parents":["13479fcb793a12609e11f6eb0a82d13aec3cac9e47eb5e0d0de078ea8f1c06fe","96c8bf2f7ca163f1e665efffc769c5a0b4489833f96d263319238c509a57f944"],"ts":1793406956,"cid":"poa-mainnet-1","sig":"3jTrE7i3165BCyTivn1qAay1sgVBZ96KtpMZFi8hRaSrsNsgUmGBsKo6SBNBpHfrFrjyc2udtxeEmABSmgzQyC9V"},"checkpointed":{"height":231001,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T03:07:39.632Z","checkpoint_height":231001,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}