{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the available backends for the keyring in blockchain?","a":"File  Backend: Stores private keys and certificates in the file system, usually using encrypted formats such as JSON, LDAP, or XML."}]}],"pr":"d926e9a2be3518d96c2f154f5071009fafc3efbbe3a2b099e7d8086952880e1a"}