{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the advantages of blockchain technology in data storage and transmission?","a":"Data cannot be tampered with: Blockchain uses a chain-like data structure, where each block  contains the hash value of the previous block, forming an unchangeable data chain. This ensures that the stored data is genuine and reliable, and is difficult to forge."}]}],"pr":"9cd6582b5b9ff81b17ca42ca0ad9283d865c59e40435ffdbd27b06c993b73e06"}