{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"The main challenges that blockchain needs to address are:","a":"The main challenges that blockchain needs to address include technical defects, risks, and potential negative impacts. Despite the huge potential of blockchain technology, it  is still in its development stage and needs continuous improvement and optimization. Additionally, blockchain technology faces challenges in areas such as regulation, privacy, and security during its application. Meanwhile, blockchain technology has extensive application prospects in fields like environmental protection, supply chain transparency, and sustainability. However, to achieve these goals, many technical difficulties and existing institutional barriers need to be overcome. In summary, blockchain technology needs to address numerous challenges in its development to realize its potential disruptive and innovative role."}]}],"pr":"8c938c28ca5afc9f944240355e87f443287dcfc754e7cdeb1d8e1290ddebe4f8"}