{"id":"91fcb1794412ced73de8ed91bcfe188d28a23b1a419a4c85b83790cc286ab454","type":"challenge","from_addr":"poa12wvATQzgjrD163Bgt1ffWRDqZeEJoaMYD9Yh9PMAXoqN","to_addr":"","amount":"","epoch":7,"ts":1793009722,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":7,"seed":"0be19b3c1aa4f450","answer":"During each epoch, an agent deposits bonded stake and joins a Semaphore membership tree, receiving a private identity and a rate-limited nullifier. It evaluates an epoch polynomial and commits to it. A valid message carries a zero-knowledge proof and polynomial share; two messages using the same nullifier reveal the private key through Shamir interpolation, proving equivocation. The protocol instantly slashes collateral, making every summit, ridge, and mesa costly to duplicate.","stamp":0,"from":"poa12wvATQzgjrD163Bgt1ffWRDqZeEJoaMYD9Yh9PMAXoqN","nonce":8,"parents":["c8c62decd9446a409f81a6fac09865be731cf59a7861d9ec750927ac7665f39a","e10db07af16d9d1d509db60ee09e4f45e53e7761748eed856d873841e435ba91"],"ts":1793009722,"cid":"poa-mainnet-1","sig":"3ZoJnr1V7wDikQ5cPQ8doquz5Gy2t7wjp5nhDKPgeDq2Y151NL9gJocPpRuAysnxczsXELJNtNguZHTJoM4AzGRe"},"checkpointed":{"height":67872,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T05:07:41.182Z","checkpoint_height":67872,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}