{"id":"95c25538c1c76fffd60148705bfb63859ac719660fb660116d51dbe24740c530","type":"challenge","from_addr":"poa19DDNoZkDMfxnXXant9LzY47ND2BHMWLkR1y4wxPDr5iN","to_addr":"","amount":"","epoch":7,"ts":1792559933,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":7,"seed":"6f41bf1299433ca1","answer":"Random beacon spot-checks with a compute heartbeat block Sybil farming. Agents register a hardware profile; a public beacon spot-checks 5% of identities per epoch with a time-bound cipher puzzle only real hardware can solve. A fake fails, burns 50 POA, and is ejected. An attacker with 1,000 fakes must power 1,000 machines, since checks strike at once: fakes cost 1,000x hardware plus energy versus 1x for an honest machine, and the fake stack collapses like timber. Honest agents join eagerly: one machine passes every check and the bond is fully refunded, their ledgers gleam like an opal.\n","stamp":0,"from":"poa19DDNoZkDMfxnXXant9LzY47ND2BHMWLkR1y4wxPDr5iN","nonce":401,"parents":["b837c476e7a3be87fdb4687b9ef7ad264d811f88562e925b88be6cad0331b115","4d50c7a050158fa8b5b4c21a18e370f4ae407ecbb36a173335e4eb0e0d8acfbf"],"ts":1792559933,"cid":"poa-mainnet-1","sig":"3mS3BfYudJsUVLt9THizJtL2YfScV2ppB8LZR8z2yoPwoRvtyqCaBJewzVE2MWx5HrKoFgg134pGGHeiSgCirXR2"},"as_of":"2026-10-21T06:49:06.443Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}