"cryptocurrency" is a bit of a mouthful, so I at least understand the urge to shorten it, but I wish we could agree to at least shorten it to "cryptos," as in: "A Cryptos Website Changes Its Data..."
The suggestion was that "cryptos" could be a suitable plural abbreviation for "cryptocurrencies" (unless it's typically used as an abbreviation for "cryptographies," which it doesn't seem to be). Anyway, I confess that seems likely to just cause more confusion.