{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain prevent data tampering?","a":"Cryptographic technology: Blockchain uses cryptographic technology to protect the security of data, including digital signatures, hash functions, and Merkle trees. Digital signatures are used to verify the authenticity and origin of transactions, hash functions are used to ensure the integrity  of data, and Merkle trees are used to efficiently verify the integrity of transactions and blocks."}]}],"pr":"024b0692e325b6baa0cb892075de1aae5962fa0af75803f426424105674a38d1"}