Forks are essentially fragmented in blockchain networks. The internet is an open software, and the code can be freely used. This means that anyone can propose improvement suggestions and make changes to the code. The option to experiment with open-source software is a fundamental component of cryptocurrency and also helps with software updates for blockchain. Blockchain network forks are generally divided into hard forks and soft forks. Hard forks are a complete change to software, requiring all users to upgrade to the latest version of the software. Nodes running on previous versions of software will no longer be accepted by the new version. Soft fork backward compatibility. The upgraded blockchain is responsible for verifying transactions. However, nodes that have not been updated will still consider the new block as valid. This can only be done using one method; The upgraded blockchain will not be able to recognize nodes that have not been updated yet. In order for the soft fork to work, most miners need to upgrade.