Bitcoin and other cryptocurrencies can be a mixed bag for pensioners,including France. However, in almost all currencies, there is risk on the one hand and profit on the other.However, the most expensive currency inside this cryptocurrency is Bitcoin, but in the case of Bitcoin investment, you need to know about it well and gain knowledge so that they can earn money later. However, in this case, just as Bitcoin has a high risk, it also has a profit in this case.