this post was submitted on 24 Jan 2024
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Do you mean cryptography in general or cryptocurrencies in particular? Because cryptocurrencies ultimately do need an interface with other currencies, or some economy, where you can pay with them. If you cannot buy any real product or service with it, it has no value. Lets take Darknet market drug dealers for instance. They are not selling drugs because they like bitcoins and buy other drugs for themselves with it. They are selling drugs and exchanging the bitcoin into some fiat currency, so they can buy normal stuff with it.