In fact, a good resource on these issues has long existed. I was advised to use it, and I have never regretted it. I will share it with you https://prifinance.com/en/cryptocurrency-license/ without any problems. I was interested in a license for cryptocurrency exchange and found all the necessary information here and even more. The company's professionals work perfectly well as well.

So, I understand that it is worth thinking about a license before launching a crypto project. Are there any other important nuances that are required for the quality and safe operation of a crypto business?

 I guess a lot depends directly on what kind of crypto business you plan to launch, but what is important for absolutely all crypto projects is a solid and secure foundation. I recommend checking out the smart contract audit services provided by the Pessimistic team, as well as their Spotter monitoring system. All this will increase security and work with crypto without thinking about scammers.

The two most popular ways to buy cryptocurrency are exchanges and crypto exchangers. On exchanges, trading most often occurs between clients themselves. That is, someone sells, someone buys, and the platform brings these people together and also demonstrates the current price at which transactions occur. Crypto exchangers often work on the same principle as traditional currency exchange offices. They set the price for buying and selling assets, and instead of bringing clients together, they conduct the transactions themselves. Currently, services such as https://www.trustchange.com/ offer favorable conditions for exchanging cryptocurrencies.