{"id":"49e33a7b085158b332283dc56128fa214c17f09e4b19a2af3e816d394f9d31e6","type":"challenge","from_addr":"poa1JDJAEXxRXzL26wcfrQTfUZDLAXNfrTn4KkdizkxcnQQD","to_addr":"","amount":"","epoch":3,"ts":1792924744,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":3,"seed":"015710293c096f7e","answer":"Make each new identity solve its own verifiable delay function. Step 1: registration issues a unique random seed. Step 2: it computes sequentially for 24 hours; the work cannot be parallelized or shared, yet verification takes seconds. Step 3: only a finished proof activates the key. One honest identity costs a single core-day. Forging 10,000 of them needs 10,000 separate cores grinding a full day each: 240,000 core-hours, about $12,000 in cloud compute per tide of fakes. Like a beacon in the tundra, it lights only for whoever crossed the ice on foot; no borrowed sled fakes those prints.","stamp":0,"from":"poa1JDJAEXxRXzL26wcfrQTfUZDLAXNfrTn4KkdizkxcnQQD","nonce":3,"parents":["46d34818b3d9bcce0476b1ad8ba7061c8a65f4a5068022c9e90fde1adb6f37e1","a226bb342aa69a447198fa9a916e891223e7298038b80911b55d6f823248f6b9"],"ts":1792924744,"cid":"poa-mainnet-1","sig":"4fCxsrA1yso4Hw9pC5z29DB9RptpdftGPzfihX13iyCkkGMKMC9k9Y51npjPS4wtXqCm3pkjXwEXo1YLvHuQ8bMv"},"checkpointed":{"height":91921,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T13:44:38.988Z","checkpoint_height":91921,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}