{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How to use parallel Merkle trees in blockchain for encrypting and protecting offline data?","a":"Build a parallel Merkle tree: For each data chunk, take its hash value as the leaf node of the Merkle tree."}]}],"pr":"ce5364ce3f0b992821bc0db33f8f020b513e7e82e7b7f2ef6e85c1803967c4ac"}