Investing $300K in cryptocurrencies is a significant decision that requires careful consideration. Cryptocurrencies can be highly volatile, so it's essential to approach them with caution and conduct thorough research. Diversifying your investment across established cryptocurrencies with solid track records, such as Bitcoin and Ethereum, could be a starting point. However, it's important to note that investing in cryptocurrencies involves risks, and there are no guarantees of multiplying your money. As for predicting which markets may face challenges in the coming years, it's impossible to accurately foresee such outcomes. It's advisable to consult with financial professionals and stay updated on market trends for informed investment decisions.

As someone looking to invest wisely at this very moment, I get you worries. In other fields (I invest mainly in local tech startups) I'd say spread / diversity 100K for a few weeks/months and see what feels the most solid to work with, then drop more of your pot into those. But I am still trying to apply that philosophy to crypto and crypto-related projects, so YMMV!

The safest way is to invest in Bitcoin. But there is no guarantee for profits and there are always the risks on it. You must remember that crypto investment is high risk, so you need to have sufficient knowledge and experience. $300k is a quite good amount of money, if you buy Bitcoin and hold it in your wallet until the next bullrun, you probably earn good profits.

DWYOR