{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain solve data security and privacy issues?","a":"Immutable records: Once data is recorded on the blockchain, it cannot be altered or deleted,  providing a tamper-proof ledger."}]}],"pr":"4262b4d26ea4bc09105c21f8b90cc5a0b1d3f690b1d5e1f087be3ae03feaff27"}