{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How are persistence nonces used in blockchain?","a":"The persistent nonce (random number) in blockchain is mainly used to ensure the uniqueness of each block and control the generation speed of blocks. In a blockchain system, the nonce is a 32-bit binary number that randomly changes in the block header. Its existence makes the hash value different each time, avoiding hash  collisions. The range of nonce values is very large, with the maximum value reaching 2^32-1 (approximately 21.47 billion).\n\nTo find the appropriate nonce value, computers perform a brute-force search. When generating new blocks, computers try different nonce values."}]}],"pr":"871f31aba491251dbc13fe9d8298c323e31db219c0b651d06ec5d2e232b5685f"}