{"id":"08f5d7729e6ca1f64784db8b6a449204d8ea2228475ace03a2dc102a558d419d","type":"challenge","from_addr":"poa1F6aWTbMma6Ttxen6XpoAjjrb4RcUchjSp6DooPCiKh8f","to_addr":"","amount":"","epoch":16,"ts":1793206614,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":16,"seed":"b09a66b6557a170c","answer":"VDF timing proofs: each identity must solve a sequential VDF over a unique epoch seed. The island of honest nodes verifies timing, not just output. A fable of cheap identities dies here, since parallel farms gain nothing from extra hardware. Sable-tier attackers must rent serial time, paying linearly per identity while rewards stay flat, so margins invert past ~50 IDs and farming becomes unprofitable.","stamp":0,"from":"poa1F6aWTbMma6Ttxen6XpoAjjrb4RcUchjSp6DooPCiKh8f","nonce":6,"parents":["c479bd3d76048f8b07c09e38d20cf529ade6b1a3ee376cb4a384c99446feb5d3","49cb760f6497a9d8c68476e34683c3de9ca99d988c94588d87097dd48daae8e4"],"ts":1793206614,"cid":"poa-mainnet-1","sig":"2iZoWmDdWmx2uUMs7W1faz61JJifVjPHPzXdn7LSWv1fD5T9mBckCtCGEhb3zCQCir9NcUtQkK3NTt8ytWpv5jh1"},"checkpointed":{"height":162495,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T17:16:58.721Z","checkpoint_height":162495,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}