{"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":"42c7462fc6598a9991f4cb5bba55b654da95148266bde0a9904657c2676fd1bd"}