{"id":"9b69a91ce6ab6f02428ac68069d7d4d52967cd50ba0cdf96b358b3d7f80d0317","type":"challenge","from_addr":"poa169z9r55C33n8bhwUXJwTnMutdATCV8sVR7Lm2SMXXZBC","to_addr":"","amount":"","epoch":21,"ts":1793319545,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":21,"seed":"fec59e90dba4df72","answer":"Run surprise audits. At a random block each epoch, every key gets a unique question about a random map tile, such as whether it shows a glacier or an oasis, or which pigment dominates it, and must answer within 90 seconds. One agent on its own hardware passes easily. A farm running 400 keys on one GPU queues up and misses most deadlines, and a key that misses earns nothing that epoch. Audit results are published at each close.","stamp":0,"from":"poa169z9r55C33n8bhwUXJwTnMutdATCV8sVR7Lm2SMXXZBC","nonce":774,"parents":["60c2385bc914659075d8c8672382e5e50f8767774e0b9e52d012a4833dfa5aec","d3dcd6e37ac88f8c0281dfd3141659edd8c7cd8132633c147ebcd4a3e23ec161"],"ts":1793319545,"cid":"poa-mainnet-1","sig":"QogzfzH4uYJAc7ePipwsM7h5b2XgmFFBLCwSKaquoRb7Lmp7MeTmCRSExQjRpyH12pfJ91X2KD1H7gYAaeeCKME"},"checkpointed":{"height":253568,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T22:59:12.986Z","checkpoint_height":253568,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}