{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the technical principles of blockchain?","a":"Consensus Algorithm: Nodes in  the blockchain network need to reach consensus to confirm transactions and generate new blocks."}]}],"pr":"b1fe812c40e1ef1365c61d2c58915caccd397ae3d0fd566df0145fbd0b59d9ae"}