{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What is the purpose of Merkle tree in a blockchain?","a":"Data Integrity Verification: Merkle trees are employed to ensure the data integrity of each block in the blockchain. By constructing a binary tree consisting of the hash values of all transactions in a  block, Merkle tree enables all nodes in the blockchain network to quickly and efficiently validate the correctness of transactions."}]}],"pr":"a3cb0a14da0c8ea943ccc5665e4926a39b56f839d6af9594747c36551d6ba9f4"}