{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are witness signatures?","a":"Witness signature is a digital signature technology used to ensure the integrity and authenticity of data. In the encryption process, witness signature uses a hash function to convert the data into a fixed-length hash value, and then signs the hash value. In this way, when the data is changed or tampered with, the hash value also changes, making the signature invalid. Witness signatures are widely used  in various scenarios, such as network security, digital currency, e-commerce, etc., to ensure the consistency and credibility of related data. Common witness signature algorithms include SHA-256, ECDSA, etc."}]}],"pr":"ddecbc8452186a1aeacfef42c8938929d8c9bbbbcbeef2a12ece3b4a55d6d65b"}