{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How are Extended Attributes used in Blockchain?","a":"Define  extended attributes: First, at the protocol level or implementation level of the blockchain, define a series of types, formats, and purposes of extended attributes. These extended attributes need to comply with the specifications of the blockchain system to ensure that all nodes can consistently understand and process these attributes when processing transactions and blocks."}]}],"pr":"b651912c9ed280c79ee366950ff5a63bba8a1f0d9bc502de3ec145cd41ca3ac1"}