{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain technology solve the security problem of data transmission?","a":"Cryptographic protection: Blockchain technology uses cryptographic algorithms (such as SHA-256) to ensure the security of the data. Each  block contains a pointer to the previous block, which is cryptographically linked to it. This creates a chain of blocks, hence the name"}]}],"pr":"9868307be5318e751f01d2f9dba5ec1ccb6b280f471fa6ba7018e47f55c8777f"}