{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What is a hard fork in blockchain?","a":"A hard fork in blockchain refers to a situation where old nodes refuse to accept  blocks created by new nodes after changes to the blockchain code, resulting in ignored blocks that do not comply with the original rules. In this case, miners will create new blocks following the original rules after the last verified block, forming two different blockchain chains. The most famous case of a hard fork is the Ethereum fork. The essential difference between a hard fork and a soft fork is whether the old nodes accept new blocks, unlike soft forks that maintain forward compatibility."}]}],"pr":"456e363e1f9219dba7f14c16c726e782c01348b351861842937e6e1681f89039"}