{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the differences between private blockchains and public blockchains?","a":"Significant differences between private chains and public  chains in blockchain exist in the following aspects:\\n\\n1. Access mechanism: Public chains are open, and anyone can participate in them, while the participation permissions in private chains are limited to specific individuals or institutions."}]}],"pr":"620fd6918928735235bf1cb1251c305a6427b1804ab5c94f68997e8d2e7a2ed7"}