@Mike9241 wrote:
https://smartasset.com/taxes/do-you-have-to-report-capital-losses
there is also the question of what you would use as their tax basis if and when you sell the BTC and ETH.
I think that is the best argument to report the loss. If you don't report the loss, then you don't have a paper trail to establish the basis of the BTC and ETH, which you will absolutely need to have if you sell those at a profit.
