{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What is the role of hash functions in blockchain?","a":"Merkle Tree: The  Merkle tree is a tree-structured data structure that allows for efficient and secure verification of data integrity. It is used in blockchain to ensure that all transactions are secure and tamper-proof."}]}],"pr":"5c28c75b501531d0138dd883db088f451679a8c2c883a53befaaa4a4ddad5b51"}