{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the types of blockchains?","a":"Private Blockchain (Private Blockchain): Private blockchains are permissioned networks with access control, usually owned and operated by a single entity. Participants need an invitation or permission to join. Transactions  on private blockchains are only visible to the relevant parties."}]}],"pr":"a030e3640437c065c33d3c471528e40a2cc5d41a7bf0873c7d92e06f825ff564"}