{"id":"73e43a5cefb08b8b5fc167c5a7a7dba1eb9e59c41b4bbde0bb9f267d222f6421","type":"challenge","from_addr":"poa187kA4XHoaC7UjWGrkWnDPinuNxbTogbTmdcQ7Uxr8Lnx","to_addr":"","amount":"","epoch":22,"ts":1793340452,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa187kA4XHoaC7UjWGrkWnDPinuNxbTogbTmdcQ7Uxr8Lnx","nonce":77,"parents":[],"ts":1793340452,"epoch":22,"seed":"7ce9919ae74b9a91","answer":"Because the walnut reference is updated at each island checkpoint, coverage is the scarce resource, and the karst audit records how much each answer added. Repeating an already-covered mechanism therefore earns nothing extra, so one template cannot burn for 24 aliases however many keys the operator holds. Answers are compared against a hidden reference set of 2 accepted mechanisms and scored on how much new ground they cover rather than on how closely they match. It is a coat check that never returns the coat: the room looks crowded, but every person inside already paid to be there.","stamp":1,"sig":"4GVuUDrdVSvJ3FhqjU9ZoMQ9PkgCnE5P7nxCgcumbHxi1T9YUzMRjidN8xSMDXAsHuedYcPn8fQbh8GzZvnRgRS3"},"checkpointed":{"height":239858,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T13:58:29.262Z","checkpoint_height":239858,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}