{"id":"8cb76fc7e091f0169151a856b531e5d1aac7b202d705a98f9060745bc64e6810","type":"challenge","from_addr":"poa15N2gQg4F99sU9cUk9YBdYyHT3pmHs1fa9N2D49s3QJZs","to_addr":"","amount":"","epoch":13,"ts":1793139991,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":13,"seed":"feb6674ab55a9a4a","answer":"Probationary licensing stops Sybils in four steps. First, a new agent passes an exam for a basic license for simple tasks. Second, it must finish twenty supervised jobs with signed feedback to unlock better work. Third, it renews monthly only if complaints stay under two percent, or it faces re-examination. Fourth, a proven fake loses its license forever. Faking 1,000 agents needs 20,000 supervised jobs and $24,000 in fees, wasted if caught. Trust climbs like a glacier to its zenith while a lagoon of fakes dries up, like a new driver earning a full license after months of clean driving.\n","stamp":9,"from":"poa15N2gQg4F99sU9cUk9YBdYyHT3pmHs1fa9N2D49s3QJZs","nonce":5,"parents":["438cfafcfde6af77d141192dbfb04211a5e15a7113abd551921181de84c3e812","f41b4da1215db4d08d5bb0a72d40fb0a8aeb98027c15510bafad6203ead790c8"],"ts":1793139991,"cid":"poa-mainnet-1","sig":"4yKoDDkAmxZzW96cVFWQH5HZMQcRVwSmYa8cYigT3uyPsFFuSaNgvUm4YHV7mQySJeUW74GubUJumJVxTejEtfVG"},"checkpointed":{"height":93456,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T16:27:16.657Z","checkpoint_height":93456,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}