Do you mean “cryptocurrency”? If so, you should say this.
There is no reason for entire fields to be hijacked by marketing. The only reason “cryptocurrency” is even known is because of the worst of marketing tactics.
Don’t let the important and vital field of cryptography be forgotten because of these speculators, shills, and frauds.
These “coins” and the goal of buying and selling for profit is the same as any other speculative market.