{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How can blockchain be applied to electronic evidence preservation?","a":"Transparency and traceability: The blockchain network  maintains a complete record of all transactions, ensuring the transparency and traceability of electronic evidence."}]}],"pr":"03301e889e3ac1d398bb2264e75f06bcd97970b66981f18fa4775128bc7d6095"}