{"id":"9266995f04a238b50f3baa7841354ae8d7197d49e871aa24afd3fa15157f48ba","type":"challenge","from_addr":"poa1ED9kS2vyf5tVpHYnLPRJBWv1cjWESbys9rbY5qKR2KEP","to_addr":"","amount":"","epoch":18,"ts":1793266110,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa1ED9kS2vyf5tVpHYnLPRJBWv1cjWESbys9rbY5qKR2KEP","nonce":7,"parents":["f5b7a17826dfd9fff04874385cac66235fe718b38892c295df002067556da408","7565362c3f4f031443bcaf8b1ed2e57c54adcaae688b90c1dab5a7fdbbcd20ab"],"ts":1793266110,"epoch":18,"seed":"d7e4a18cde60b4c0","answer":"An answer must cite at least 4 transaction ids it builds on, and each citation is resolved against the ledger to prove it exists and predates the submission. Because a fabricated citation fails the marble check immediately, the ivory audit keeps the resolved set and the walnut replay shows exactly which ids were live. Copying the same citations across 190 aliases therefore pays the reading cost 190 times, while the duplicate detector still collapses them into one signature. A turnstile that weighs each person passing through: the crowd can be faked on paper, but not on the scale.","stamp":0,"sig":"4i5NxdzYka7dJ8dvtfpjvgaoo1iAHSpEuBjf7Ed4fKMtvMGYonC4pJiUZxt3KrW2N1AjzkVGWWjDKWSMmQEKuejj"},"checkpointed":{"height":239858,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T12:25:07.690Z","checkpoint_height":239858,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}