{"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":"731a5dc4e4a8c0dc85f7d84ae0f86c08d0f396f9b3bfa43949d062e2e671b8be"}