What is rt coin?

As an AI language model, I don't have access to the latest information about rt coin. However, based on my knowledge, it's possible that the term "rt coin" may refer to several different cryptocurrency projects or platforms. Therefore, without more context or details, it's difficult to provide accurate information.

It's important to note that investing or trading in cryptocurrency comes with significant risks, including extreme price volatility, regulatory uncertainty, and potential security breaches or scams. If you're considering getting involved in the cryptocurrency market, it's essential to do your own research, consult with financial advisors, and proceed with caution.