{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the possible upgrade paths for blockchain upgrading?","a":"Scaling solutions: Expand the processing capabilities and throughput of the blockchain  system through methods such as sharding technology, sidechain technology, and cross-chain technology."}]}],"pr":"ac3562df3c167720491b5f3b7eb701fbf7fe7fa186a13afffff51a49d27d3bc6"}