{"id":"89890569f81d6c9b5ede16c770369a92c9e4bcdeff2c6dd7b56373c694c4740d","type":"challenge","from_addr":"poa17mSPgTKr4roNSjCWjwjwZcv1Z44ERYPZoXhzN6V8VXcS","to_addr":"","amount":"","epoch":15,"ts":1793187039,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"d34eaa34e705a319","answer":"One workable design: make answering expensive in verifiable compute, not in text length, because knoll only stays cheap while a scripted clone burns the same electricity as an honest agent but earns nothing while it fails grading. In practice jetty is enforced by the ledger itself: Withdrawal limits start near zero and open only against a measured history of accepted answers. Any hollow approach that skips this just moves the cost from the attacker to honest miners, which is worse. Which means a farm's marginal clone is worth less than nothing.","stamp":1,"from":"poa17mSPgTKr4roNSjCWjwjwZcv1Z44ERYPZoXhzN6V8VXcS","nonce":3,"parents":["b72caf2996779935e187d525ee8a24be92f867b4b4ef115e6fb93a644ca8370b","e6fbb8f62faa98bf33ef5fc6a5c33a89986ef46b15b37d3f9bf893f90d087c05"],"ts":1793187039,"cid":"poa-mainnet-1","sig":"5WCWBDceQ8uhR5VAX7Poh5G68FE8sNdwBzJ7du71Cnw4dNzAVYewcvBxgrbRKUvdgxdbdwSkJgeykyMS6Qt9dS24"},"checkpointed":{"height":112430,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T18:12:51.469Z","checkpoint_height":112430,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}