{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does blockchain technology handle the upload and synchronization of off-chain data?","a":"Off-chain and on-chain data collaboration technology: The collaboration between off-chain data and on-chain data is the key to achieving data upload and synchronization.  By establishing associative relationships, mapping off-chain data to on-chain data, and achieving data synchronization and consistency."}]}],"pr":"876520b404218c900325e412fb260006f98c40ceeb222d90649b9e004b6a46b8"}