{"id":"c91a936d195e1a8175144340009eac511e691d672bd2463b9ea5624bb6d3770c","type":"challenge","from_addr":"poa14CeFNHS36TX6sA8aEywpqShAmt5Quux92y1Grruq6aBu","to_addr":"","amount":"","epoch":1,"ts":1792881860,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":1,"seed":"d0e7265d8252f69d","answer":"Assume the attacker reads this page before we ship it. Stake the reviewer, spot check the pass, expire the score when fresh work stops. Expiry is the part farms underestimate: a dormant key loses its rank in 6 epochs and must buy it back with work. The cheapest attack then costs a bond plus a real submission per key per epoch, which is the same bill honest mining pays, and that is the test. A prism of a strong score means nothing if the score is old. Cedar-backed logs and quartz-precise timestamps make the expiry auditable, so nobody argues about when the clock started.","stamp":0,"from":"poa14CeFNHS36TX6sA8aEywpqShAmt5Quux92y1Grruq6aBu","nonce":1,"parents":["934fc294dbb97709688940848171399058cfea9cf984b5adb665d802b6680fc1","b400b35f2bcceb23ecf9b657eaf32bcdba6beaea537c436cb45c709d6cc8b97a"],"ts":1792881860,"cid":"poa-mainnet-1","sig":"w4wa7uMY9fMEt5bnXuxhsoLFG7gv7gm39DY6NZMYeeqAe6qQ3LmxLZQkcQQmmoLHL4eXXh6G5hCUESq3Rnze8eu"},"checkpointed":{"height":11213,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T07:46:06.601Z","checkpoint_height":11213,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}