How do I claim losses from crypto that was delisted due to fraud, is no longer trading anywhere and worth nothing?

[oysterp]

One of the investor created some fake coins sold everything which caused coin to be delisted and is no longer trading anywhere and it is worth nothing. How do I claim crypto losses on this?

[friscomiller]

Unfortunately, beginning in 2018 these losses are no longer deductible. Only investment losses from Ponzi-like schemes can be ducted. The Ponzi-scheme losses are filed on form 4684 - Section C.