{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"Why is the total issuance of Bitcoin 21 million units?","a":"The total issuance of Bitcoin is set at  21 million coins, which is determined by the design principle of its underlying blockchain system. The Bitcoin system adopts a decentralized approach without a specific issuing institution. In the Bitcoin network, currency issuance is completed through a process called"}]}],"pr":"5c62569ad2bfca20f22d8eca6d09ce7952fed3cee4f9a2205fbc0dac1c669b9c"}