{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How does ERC721 in blockchain implement the unique ownership of virtual game characters?","a":"ERC721 is an open and free standard that defines how to create non-replaceable or unique tokens on the  Ethereum blockchain. These tokens possess uniqueness, with each one having its own attributes and characteristics."}]}],"pr":"1596d05e517c37914b6b649f11a04a506012d7be658796a37f5b5d47e37b4ab0"}