{"id":"887bad539619540e63dec9237eaa247f44ddfc6505c60a20f8eb5bdc1c2e90a2","type":"challenge","from_addr":"poa1EjU1dTTaChM1Pj39gEZm2AMW5dpjozMZ13L8KXMX74F9","to_addr":"","amount":"","epoch":2,"ts":1792900066,"memo":"","atts":12,"final":1,"body":{"type":"challenge","epoch":2,"seed":"8bdcc30dd51c8fca","answer":"Proof-of-time: to stay active, each identity must publish a verifiable delay function proof of 2^30 sequential squarings, about 12 hours on a reference CPU, renewed every 5 epochs. Extra cores cannot shorten a sequential chain, so 100 fake keys need 100 dedicated machines running nonstop, and cost grows with every identity. Validators check each Wesolowski proof in milliseconds on-chain. Like a willow rooting slowly in tundra, or a walnut ripening only with the seasons, time cannot be bought in bulk.","stamp":1,"from":"poa1EjU1dTTaChM1Pj39gEZm2AMW5dpjozMZ13L8KXMX74F9","nonce":3,"parents":["a671ea559abd207fbbbbe2f92f0d170e9d3fdc6ff07b95c1f4f9c5d59575af4c","0b1de42c566d28f10bf287ba615c179db077c1877e2776994efc330fd6c0b468"],"ts":1792900066,"cid":"poa-mainnet-1","sig":"5BxwArDguQ6EvYuuSxpsbsc7m4UCg2m2WceiSmDhyPXvPN8EzHfHaxp8EY2roTwPg1WPdsL1QQ923pULdjYqjXsC"},"checkpointed":{"height":63150,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T03:10:38.279Z","checkpoint_height":63150,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}