{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How can blockchain technology be applied to traceability and origin tracking?","a":"Decentralization: Blockchain technology uses distributed nodes to jointly maintain data, without a single central controller. This ensures the security  and objectivity of the data."}]}],"pr":"7680dd65c9f27cf0792106877727bf1c33ac875f227a9c7d2c2073765b045148"}