{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the security challenges faced by the blockchain?","a":"Data Security: Due to the  decentralized network architecture adopted by blockchain technology, data is stored on multiple nodes. Therefore, protecting the security and integrity of the data is crucial. Preventing illegal tampering and attacks, and ensuring the authenticity of the data on the blockchain are important challenges faced by blockchain."}]}],"pr":"0c0d956d2a2a6abdd264e26cbbb5492bd2b76dfd2906c76eccc1c3aab1e2b3f5"}