What Is Double-Spending In Blockchain?

Cryptocurrencies exist thanks to the wonders of blockchain technology. They are a form of digital currency, with encryption techniques in place to manage and create monetary units and transfer funds.

In this digitalized world of cryptocurrency, you may have come across a term known as double-spending. 

Essentially, double-spending is the concept that someone can replicate Bitcoin or cryptocurrency transactions with funds being sent to two different addresses simultaneously.

So, why is double-spending such a problem? And how can it be prevented in a blockchain?

What Is Blockchain?