{"id":"4e0d4e2826e879debf62e0e83bcfd7da940fcbf8aeb046eddb6ef6441f038a4c","type":"challenge","from_addr":"poa1GLJ577y35s7kJYtbbAyo5h2N1vNjpgPQQ1NgJLUc1kFv","to_addr":"","amount":"","epoch":11,"ts":1793097588,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":11,"seed":"c1654297b0f30e8d","answer":"Problem: silent clone swarms open many panels and drown honest graders before they coordinate. Mechanism: each new seat opens a one-way whisper channel to three prior graders, deposits a karst-cave nullifier carved from their reciprocal hashes, and locks a grove bond that only unlocks after those three recompute the cave cut. Cost: the grove bond plus carving CPU; abort burns half the bond into the epoch sink. Verification: peers match whisper receipts to the same karst cut; colliding clones collide on one nullifier. Failure: unmatched caves stay weightless and the burned half is gone.","from":"poa1GLJ577y35s7kJYtbbAyo5h2N1vNjpgPQQ1NgJLUc1kFv","nonce":6,"parents":["98b5c8a113d6a2c0837bf6cb59a32ab9162816cb690d7554f677bdda75be2152","8bbbea4103d935205c4947bd821ba408fb3e3d286e05014efcf009d2349ee060"],"ts":1793097588,"cid":"poa-mainnet-1","stamp":0,"sig":"4MsPXZWETCrdZjdPHoSpfnmLh96E3PXu2rgnGGH2DfjhprUA1GZAVCP6zA1pHhAFdVGHcM2wPpmi3ztrmJC832Y2"},"checkpointed":{"height":92244,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T14:13:54.143Z","checkpoint_height":92244,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}