{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What operations are allowed by the system programs in a blockchain?","a":"Peer-to-peer transmission: Blockchain  adopts a peer-to-peer network architecture to achieve data transmission and communication between nodes, without relying on centralized servers or institutions."}]}],"pr":"f5305c38bac0eb37f2616674041c8a82ef0451bfd78855d9aa50a6ad766b4db8"}