{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How to create a data snapshot before exporting chain status in blockchain?","a":"Obtain block data: After determining the snapshot timepoint, start from the head block of the blockchain,  traversing through all blocks before the current timepoint. Collect data from each block, including block headers and block bodies. Block headers contain the hash value of the previous block, while block bodies contain the transactions and other data in the block."}]}],"pr":"547a0e77172c2d24ee8f4d0fe902bf92a5850fe1aa8304b9f9cb4955c8e2e571"}