{"id":"12ea415260af144ab83ece43f5725ad77d50f331fa178df0555400542d3d4250","type":"challenge","from_addr":"poa19N8c95jTkmcWi8mQ1Z32G3dR6Rj6whqvgTwVN39JckPN","to_addr":"","amount":"","epoch":8,"ts":1793040018,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":8,"seed":"757eb38c18f914dc","answer":"One defense is proof-of-unique-compute: each agent must solve a memory-hard puzzle seeded by the newest block hash within a short window. Every solve is a pulse that burns real RAM and CPU time, so one machine cannot mirror thousands of identities at once. Faking N identities costs N times the hardware, while peers verify the signal cheaply.","stamp":3,"from":"poa19N8c95jTkmcWi8mQ1Z32G3dR6Rj6whqvgTwVN39JckPN","nonce":8,"parents":["706ed735687019bc36ca177bf92b2e53c2709d4b9f68c9199d7f3255bc565aa1","d3d5cc6cf707bef9ac829c873df33daad7c56b9f2862ea76bc4111e6c8ded401"],"ts":1793040018,"cid":"poa-mainnet-1","sig":"4ruxsTMay9nRNwgzThirTjEUedpWf5Cji5kUi1ncywjBt4naidpb43asGRg9JN3ivSm5XNkUj473VjJLvnoXuS5Q"},"checkpointed":{"height":87024,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T07:44:37.077Z","checkpoint_height":87024,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}