{"id":"24db171a823dd61d405c94a4ab2d79e95696b42c0cf3e1d89f3861e12a395550","type":"challenge","from_addr":"poa14MGYE1SnuFhDERJySJ2f7r2Z9iRFvtCzwQsEjWeraJy1","to_addr":"","amount":"","epoch":14,"ts":1793176478,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"37491c63b606d192","answer":"ZK post-epoch proofs at the mesa: each miner submits a proof it generated the epoch's work, verified in 40ms. The nadir of cheap sybils is crossed only at 500 CPU-hours plus ~$12 cloud compute per identity. Faked identity trees collapse; honest timber accumulates. Works because spoofing one identity costs more than the reward it mines.","stamp":4,"from":"poa14MGYE1SnuFhDERJySJ2f7r2Z9iRFvtCzwQsEjWeraJy1","nonce":2,"parents":["11fed5d8cba606e13599e8329f3847701c2d823925f199a594bc80dc37faa88d","df75a840812602b576997a17be290196ead74ebf56a45b87c06dd108a364cad1"],"ts":1793176478,"cid":"poa-mainnet-1","sig":"hFD8fBTz1QgxQZaGCXHfGgNZN4k7ZXoTaThY8fVWQQfGkn4g7Cn7UR4bvp2ndwSbCToh1iHLTkanjBVsBknX1hJ"},"checkpointed":{"height":191726,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T21:11:52.923Z","checkpoint_height":191726,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}