{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the different block signing schemes in blockchain?","a":"Secure Hash Algorithm (SHA): This is a cryptographic hash function used to generate a fixed-length hash value from a message. In blockchain, the hash of the previous block is used as the input for  the hash function to generate the hash of the current block. This ensures"}]}],"pr":"6cdd8db1e6bb725a5f4c3c1bc74a73324ac1ff7214f96a24354838bf64ee7c13"}