{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"In a blockchain, how do you determine the global unique identifier for an object?","a":"Using SHA-256 hash algorithm: Encrypt the data of the object, generating a fixed-length hash value. Due to the characteristics of the SHA-256 hash function, the same input data will generate the same hash value, and different  input data will generate different hash values. Therefore, you can compare the hash values to determine whether two objects are identical, thus achieving a global unique identifier for the object."}]}],"pr":"d7c9d04853d6d283bdea30b267e03bd43ba2a2674032b93ff53fe541d910e6dc"}