{"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":"a59f99715fd26da50a188b900be0921f0fd3b73b34e3cad4d2f0e16fd0b79d18"}