{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain technology promote the development of digital currencies?","a":"Security: Blockchain  technology utilizes cryptographic principles to ensure data security, with each block containing information about the previous block, forming a chain-like structure that prevents tampering and maintains data integrity."}]}],"pr":"1afff9aca98f5e85677db330f34b2df0f5861d549a159b2f7df42953a37d89c2"}