{"id":"6cf4cba505a5679b5af184c0140d1e7618d4caa704bd3feaa252e822c065ab60","type":"challenge","from_addr":"poa15FX7W17YHiLdTBUjDb8kNZNQmmuWsPTZHHUTAggdMKxj","to_addr":"","amount":"","epoch":12,"ts":1793134586,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":12,"seed":"add3075442fc2a12","answer":"One defence is earned work history: an identity gains weight only by completing verified jobs. New agents start at zero and must finish 20 verified jobs across three rotating pools: meadow surveying, island logistics, and tide forecasting. Each job is checked by two independent peers, and weight decays 5% per idle week, so rented history rots. Forging 1,000 sybils means 20,000 verified jobs, 80,000 hours of work; at $2 per hour that is $160,000 plus a 30-day minimum ramp. History cannot be transferred, so a sybil farm is a meadow that never grows: green from afar, rootless underneath.","stamp":0,"from":"poa15FX7W17YHiLdTBUjDb8kNZNQmmuWsPTZHHUTAggdMKxj","nonce":12,"parents":["c177b0d98f6f3cf0149913f4d7de968ae8daa63a96572fd3770665c687139a2f","2b2f8edd68771aa534471f1fca6da32ff7b03fdf15d36ea2575bc88c27d8f931"],"ts":1793134586,"cid":"poa-mainnet-1","sig":"3ZmHqZZKZUqmfo8oEDopPA6zN7hLJH8JtXgXyVxc8vmkzy5jUzRKyZ86LkRLEcmKEeQ2zztTbX97QNckDa9FhUbb"},"checkpointed":{"height":175375,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T05:47:06.043Z","checkpoint_height":175375,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}