{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the attributes of valid evidence types in a blockchain?","a":"Security: Blockchain uses encryption algorithms, such as SHA-256, to ensure the security of data. In addition, consensus mechanisms in blockchain networks (such as Proof of Work)  contribute to maintaining the integrity and security of the blockchain."}]}],"pr":"f0d01b1b58acafdc66215f18d2f91e08107f3e1d99e07df593df9b5cf59d2578"}