{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How do programs in blockchain ensure security and transparency?","a":"Distributed ledger technology: Blockchain stores data across thousands of computers (nodes) worldwide rather than in a centralized database. This decentralized structure makes  it difficult for attackers to tamper with data because to modify information on the blockchain, attackers need to break into most nodes, which is very challenging in practice."}]}],"pr":"0e96e0a437f5fae987e826d83360e4999cb8cf11ea4912d2ac1a975cc6df8faa"}