The value of a cryptocurrency is how much it is worth, valuation can be very challenging. The common way to value a cryptocurrency is to look at its most recent trades at an exchange.  However, this is challenging, as the recent trades might be at different values. Further, some cryptocurrencies (for example, barter currencies) don’t generally have both ends of the transaction (and thus the value) available on the blockchain. Value may also be defined more generally as the price at which a willing buyer and seller would trade an asset.