Why is blockchain so hard?

The point of a blockchain is that it’s not under the control of a single entity and this is violated with a forced upgrade . Instead, all upgrades have to be backwards-compatible. This is obviously quite difficult, especially if you want to add new features and even harder when thinking from a testing perspective.

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Why is blockchain so difficult?

The higher the cryptocurrency difficulty, the more guesses or hashes are needed to reach the target hash requirement . As a result, this process makes it very difficult and expensive for attackers to gain the majority control—called a 51% majority—of a blockchain network.

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