{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"Why are SHA-256 hash values used in blockchain?","a":"Data  Security: The SHA256 hash function has one-wayness, which means it is difficult to recover the original data from the hash value."}]}],"pr":"b416626b0f7e89081e0317b3f048af721b9e8fbb03ef3475b563997d092bb11d"}