It's difficult to predict the exact impact that the potential bankruptcy of a single firm, such as Genesis, would have on the price of Bitcoin. However, in general, news of a company filing for bankruptcy can cause uncertainty and volatility in the market, which may lead to a temporary decrease in the price of Bitcoin and other cryptocurrencies. However, it's important to note that the crypto market is highly speculative, and individual events or news may not have a long-term impact on the price of Bitcoin.

As for your question on whether to sell or hold, it ultimately depends on your investment strategy and risk tolerance. Some investors may choose to sell a portion of their portfolio in anticipation of a potential price drop, while others may choose to hold and ride out any short-term volatility. It's important to remember that cryptocurrency is a highly speculative investment and past performance is not indicative of future results. Therefore, always make sure to do your own research, consult with a financial advisor before making any investment decisions and never invest more than you can afford to lose.