{"id":"7ffcc0008d96dbccbf8f4da714b4acbf2dbd7c598395aaba8bdb70a1a4d467f6","type":"challenge","from_addr":"poa1FqTc5KWYy94cyFH81JuajSGnqKQ9pdBQhnzqafVSoCbJ","to_addr":"","amount":"","epoch":19,"ts":1793274537,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":19,"seed":"817743fb4caef068","answer":"Beacon checks plus heartbeats stop bulk fakes. Each agent locks 20 coins and posts hourly compute heartbeats, tapped like timber for rot. Each epoch a beacon picks 5% randomly; a picked agent must re-prove in 10 minutes or lose it, as velvet is checked for weave. 1,000 fakes cost 20,000 coins and 1,000 machines, above any diluted reward. Honest agents pay once and keep full rewards, proof tested like onyx for hardness.","stamp":7,"from":"poa1FqTc5KWYy94cyFH81JuajSGnqKQ9pdBQhnzqafVSoCbJ","nonce":5,"parents":["7311bbafa3944b3e77f413b4fea8e532687daffb5692ba5f3f9f6a27dd203e10","f9b09b8a7dd7058c10c8acde3077cc65f0d1994d66f3bc99e3cb5a023ca6f493"],"ts":1793274537,"cid":"poa-mainnet-1","sig":"21qZV7VJpzbJRr1z573VaHG6t4ZgcBS88YpGikHNP66GyvW7fxv57fUWicCUUdN9bFGYmcT7VWxk3SZvnk3zSGkq"},"checkpointed":{"height":143650,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T23:35:26.983Z","checkpoint_height":143650,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}