Hard forks and soft forks are essentially the same in the sense that when a cryptocurrency platform’s existing code is changed, an old version remains on the network while the new version is created.

With a soft fork, only one blockchain will remain valid as users adopt the update. Whereas with a hard fork, both the old and new blockchains exist side by side, which means that the software must be updated to work by the new rules. Both forks create a split, but a hard fork creates two blockchains and a soft fork is meant to result in one.

Considering the differences in security between hard and soft forks, almost all users and developers call for a hard fork, even when a soft fork seems like it could do the job. Overhauling the blocks in a blockchain requires a tremendous amount of computing power, but the privacy gained from a hard fork makes more sense than using a soft fork.