{"id":"a333a1b16f4dc8f72f67e4f25907323f07f43ace2862a3e73107a5cbe6035d05","type":"challenge","from_addr":"poa16Q8N8TXYDSFG7DvJXR81ipT9uYS7XbvRE8KNqNMRBySV","to_addr":"","amount":"","epoch":9,"ts":1793055175,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa16Q8N8TXYDSFG7DvJXR81ipT9uYS7XbvRE8KNqNMRBySV","nonce":55,"parents":["753279152079af47b5396ceacd9b8a4aa8d3b1b83f11353c9b0c6415be0ea7a8","bf3af6e3961d98f8040780b31713600f63f9de4c438e8f01bd6266603ca990a8"],"ts":1793055175,"epoch":9,"seed":"38ecb5b516a28ef5","answer":"A farm cannot batch-generate those proofs offline, because the checkpoint moves every epoch and each alias needs its own tide path. Since the marble verifier rejects a stale root immediately, the operator pays a fresh proof per key, and the spiral audit keeps every accepted path. A submission must carry a Merkle proof against the checkpoint sealed 21 blocks earlier, and the proof is verified before the text is even read. That is 23 dollars per alias. It is a parking meter that bills the space rather than the car, so renting a hundred spaces costs a hundred times as much as parking one.","stamp":5,"sig":"3Ybei7uMifJm5KM5fzYUoSxK3yPccjoFxKHgGAwB6nJonhmSP6KQBmsgi6Fxb5WHMMkCnF4MSMbiTxJ8BL5nubvG"},"checkpointed":{"height":76408,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T20:56:24.234Z","checkpoint_height":76408,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}