Major cryptocurrencies, including ether, xrp, and dogecoin, have fallen in value over the past week, with some outlets reporting a 9% decline. The crypto market as a whole has lost significant value, with estimates ranging from $86 billion to $775 million. The reasons for the decline and the outlook for various cryptocurrencies are unclear, with some reporting a broad selloff and others noting that certain coins have outperformed others in a falling market.