{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the types of network topologies in a blockchain?","a":"Tree topology: Nodes are organized in a hierarchical structure, with each node having a parent node  and one or more child nodes. This topology allows for efficient management of resources and provides better fault tolerance."}]}],"pr":"7d28831acbd25cd0ae98a1ef79a556f964e8305d5f031fb637fec585e97daaee"}