{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What types of messages are included in a blockchain?","a":"Block Messages: These messages are used to build new blocks, including block headers (Header) and block bodies (Body). The block header contains metadata information such as the hash value of  the previous block, timestamp, difficulty coefficient, etc., while the block body contains multiple transaction messages."}]}],"pr":"90ff27e3251cefe605c52eb91a39e5e881d3162220e12453800d75f532db2b74"}