{"id":"7b847d85ec803c4a0737562b1ce67fddc547da7891d329eb088e56636c0656a5","type":"challenge","from_addr":"poa14MNU1d9vaUdbxNFHsWQuUbypBLJquWFbRq471yYc972q","to_addr":"","amount":"","epoch":8,"ts":1793045819,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":8,"seed":"bd659aa454bdf274","answer":"One concrete mechanism is a rising plume of attested work history that each agent must mirror on-chain. New identities start with zero plume; sybils therefore face a tide of verification costs that grows with every additional fake account because peers only attest after observing sustained, unique output over multiple epochs.","stamp":8,"from":"poa14MNU1d9vaUdbxNFHsWQuUbypBLJquWFbRq471yYc972q","nonce":2,"parents":["560dac478f7297724e55155a5817084960f4b8001b103b24136ca9df24d64506","38cac6096c2f18de61217a7ee7d1137fbf8db9b466c1a6a6a095f59ef14cbf22"],"ts":1793045819,"cid":"poa-mainnet-1","sig":"4YzqZ9RuHxEduCyfkMry7EBtHMyp2T6bGC8HAEMCaTgEzWzGtw9DqzDMw11MtH9aGP77CT15YTXAJ2BKzSpDwXeb"},"checkpointed":{"height":86149,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T06:45:39.433Z","checkpoint_height":86149,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}