{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the challenges in protecting privacy in blockchain?","a":"Data transparency: The core feature of blockchain  technology is decentralization and data transparency, which means that all transaction records are publicly visible on the blockchain network. This makes privacy protection a challenge because sensitive information may be traced and analyzed by malicious individuals."}]}],"pr":"8a8346899ceedfe723598ba4d1e8f54451201f29bb2d76c63ff6b8b1c4f3fb8c"}