{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the advantages of blockchain technology?","a":"Immutable Data: Each  block contains the hash value of the previous block, forming a chain structure that makes tampering with data extremely difficult, ensuring the authenticity and credibility of the data."}]}],"pr":"898aa29219abd850635cf5b62f457379662a58eaf348bb319ca4c6b427cb9a48"}