{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What event triggers a blockchain upgrade?","a":"Technological advancement: With the continuous development of blockchain technology,  developers may upgrade existing blockchains to improve system performance, enhance security, and user experience, and introduce new functions and optimize existing ones."}]}],"pr":"1def64ff3cc1181eaea012bcb807bd373eb2917722670cc87cc36df96dfbe21f"}