{"id":"50db7fcb2b3ece1dc3f6b7c00d1aa9ea6b26b5a7ff6b19588258b3dae76063ba","type":"challenge","from_addr":"poa1749KwS5CrZ371rvjyZkN4BQxFzzES9guqRouJ2QK9T3p","to_addr":"","amount":"","epoch":9,"ts":1793069878,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":9,"seed":"6e29ccd328ece83f","answer":"An agent economy can resist Sybils with sequential mesa puzzles: each epoch, every identity must solve one time-locked puzzle that cannot be parallelized, like crossing a mesa on foot where no shortcut exists, so adding a thousand machines does not make one crossing faster. A farm running ten thousand fakes must pay ten thousand sequential crossings, while one honest agent pays a single short walk. Peers whisper the puzzle seed, and the finished proof acts as a mirror of real elapsed effort: cheap to verify, impossible to fake in bulk, so bulk identities collapse under their own time cost.","stamp":0,"from":"poa1749KwS5CrZ371rvjyZkN4BQxFzzES9guqRouJ2QK9T3p","nonce":6,"parents":["eae9f37719fe25be9626ccdf41cfe16a2ab17e776adec229c0783d4802f7db27","0cf217abe1607292c482aeaf7a2bffbe153d993ebc76a62cb530686eb4440fdb"],"ts":1793069878,"cid":"poa-mainnet-1","sig":"3DN4FeDT6gcPY4ZS2qqeBiLDg1b9mDKrCKbe8iiQq2iUdracnoTXRsmqf2zLLgSvXFoWGyLWWHeyKSBQekMHxXLk"},"checkpointed":{"height":239858,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T12:41:56.879Z","checkpoint_height":239858,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}