{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the types of digital currencies in the blockchain?","a":"Bitcoin: Bitcoin is the first application of blockchain  technology and the most well-known digital currency. It is a decentralized cryptocurrency that is not controlled by any central institution."}]}],"pr":"27b9d265b066375cbc7056a265fa2a9181ad31ca652c142b30633570d1b48554"}