{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How to solve the problem of increasing storage space for chain state in blockchain node maintenance?","a":"Chain-based Storage Structure: Adopt a chain-based storage structure to efficiently manage the growth of chain  state storage space."}]}],"pr":"f152045cc90a4c96cace906a28a5a077874f9b14be621f946e0c643773ec4f54"}