The transparency of Bitcoin transactions, due to the blockchain, ensures that all movements of the currency are unique and verifiable, reducing the risk of fraud in systems. Regulatory bodies and financial institutions are increasingly encouraging and merging Bitcoin into their systems, indicating how reliable and potential for legitimate use in the business .
Bitcoin is reliable for easy transaction, it is a system way of saving, it is transparent in trading.
Due to its unique financial stability companies are happy to use it in the legitimate ecosystem due to its legal rights in the country.
If Bitcoin was a scam, you will not see people proceed into investing in Bitcoin like the way lots of people are investing in it today. Bitcoin has made some people to be extremely rich, including some traders who have become rich because they are trading Bitcoin on centralized exchange. There's no way to allegedly prove that Bitcoin is a scam, only the people that don't have legit knowledge about Bitcoin will think that it is a scam.