Definition of Double spend
Double spend is an error in a digitized world where users can use the same electronic currency multiple times. It can be easier to be spending more than a single time in a digital currency than a physical currency because a digital token contains a digital file that can easily replicate or falsified.
Brief Explanation of Double spend
The ability to replicate any electronic data makes it easy to do double spending. One of the examples is BITCOIN, which is a digital currency with a digital file that has electronic information as we know it can easily be duplicated, so before investing in a bitcoin, verify the validity of a coin. To prevent the double-spent error, many cryptocurrency techniques or approaches have been taken fundamentally. To protect anonymity in exchanges and transactions, off-line systems record blind signatures.