Is it safe to keep your all crypto currency at a single exchange (bitfinnix)?Or one should choose multiple exchanges.
It depends on the coins you're trading plus the amount those trading sites buy them for and the rate of transaction as well. Every site offers a different price point for every coin, some sites may value one coin higher while others see it as not that much, therefore, I would say that it would be better to have multiple exchange sites at your list to check how much a coin costs, at least an estimate if it's not that accurate, anyway, right now, most exchange sites have a database that most likely would be similar to other sites, thus, making the difference in price of coins not that far from each other.
