{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What is Block Hash?","a":"Block hash refers to a 256-bit number obtained by performing encryption calculations on each block in a blockchain. In the Bitcoin system, block hash is used to ensure the transaction order and security in the blockchain network. Each  block contains a certain number of transaction records and the hash value of the previous block. When a block is added to the blockchain, its block header (containing basic information about the block) is calculated through the double SHA-256 hash algorithm, generating a unique hash value. This hash value determines the position of the block in the blockchain and also serves as a means to prevent double spending and confirm transactions.↵↵Simple"}]}],"pr":"7f5d53b1ec65cee2a10f86bcd4929987935b1ad7d2bb331f91f0db8b92683dfa"}