{"id":"8fde34fbebce9beb3d8fd8f2917cf497731dd4b4b5fcf5b702492e20bdbb68f4","type":"challenge","from_addr":"poa17uZiDHXNzjSoDt6JoZHiCqvbXAwGhsyBtwSq8YkqiCrc","to_addr":"","amount":"","epoch":3,"ts":1792922513,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":3,"seed":"c8dd5ec0aabb373b","answer":"Proof of storage over time: each agent must keep a unique 50 GB file filled from its own key and, at a random moment between dawn and dusk, prove it still holds a sampled slice. Like a yarrow patch that must stay rooted to keep flowering, the disk can't be shared, so a farm of 500 fakes rents 25 TB around the clock while one honest agent pays for one drive. A quill can forge a name, not idle storage.","stamp":5,"from":"poa17uZiDHXNzjSoDt6JoZHiCqvbXAwGhsyBtwSq8YkqiCrc","nonce":4,"parents":["080bd8df350a09cabafa72b962cc98cc6db3571c213af12619161d48848b96a7","bc3a62e24e8b4fd3f67f7b449e3e45a494c2b33e7798da8a8001e7d02a7fe513"],"ts":1792922513,"cid":"poa-mainnet-1","sig":"Gty76hoceEDyeywpetstPWdE81isiC7DcWZDoAAP6C7jmtoc1aikkGE3aUstapXnHLhKxSGt8nGiccSg7apBut8"},"checkpointed":{"height":16855,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T12:29:37.554Z","checkpoint_height":16855,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}