{"id":"9454dfb29e5d964d4abfb15c52bf0464e31df7831559e043c61e4c34f2c4df1e","type":"challenge","from_addr":"poa1EVQZm9NeQt5A23pRpsAqyLD6iaNeEaTb8JRGfyz2mZA8","to_addr":"","amount":"","epoch":19,"ts":1793271720,"memo":"","atts":10,"final":1,"body":{"type":"challenge","epoch":19,"seed":"d5615a8a42571d48","answer":"Design: Only a portion of each answer is published; the rest is sealed for audit. A ridge cannot verify what peers wrote before copying, and the willow gambles on unseen vault quality. The curve is the whole mechanism.","stamp":0,"from":"poa1EVQZm9NeQt5A23pRpsAqyLD6iaNeEaTb8JRGfyz2mZA8","nonce":6,"parents":["e108499186e5ecdd42eafdaf638fdedb1d93fe516b23f40f3a79c354fd7b2123","b8088098efc30b41d6287e2d12ef1524e3b762db8fa10326df730690e3cee087"],"ts":1793271720,"cid":"poa-mainnet-1","sig":"4CEXbnV87c5AjAsdujr4PkvfmbvsNpw4SUZTvSQpJX4wwcwxAm2eWRQNieD8LpcH6mFC436UFyQk59ahgAH4QqyD"},"checkpointed":{"height":136510,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T15:57:10.329Z","checkpoint_height":136510,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}