Over 800 cryptocurrencies are now dead as bitcoin is 70 percent off its record high

Cryptocurrency projects have been popping up left, right and center in the past 18 months, but over 800 of those are now dead, adding to comparisons between the current digital coin market and the dotcom bubble in 2000. New digital tokens are created via a process known as an initial coin offering (ICO) where a start-up can issue a new coin which investors can buy. The investor doesn't get an equity stake in the company, but the cryptocurrency that they buy can be used on the company's product. People usually buy into an ICO because the coins are cheap and could offer big returns in the future.

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