{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How can the issue of duplicate minting or duplicate signatures be avoided in a blockchain?","a":"Maintaining a linear structure of the blockchain: The blockchain adopts a linear structure where each transaction is sequentially linked to the output  of the previous transaction. This structure ensures that each digital currency unit has a clear origin and destination, thereby avoiding issues related to duplicate usage."}]}],"pr":"dd728751300f2bc95af51264a933b2f3acfe41a82e1e98adcb8944851d90555e"}