[dodobirdlord]

What the IRS likes to see in audits that involve questions that don't have clear answers is that you made a good-faith interpretation of the law and applied it consistently. You can even have picked the interpretation that benefits you, that's ok. If you did all of your taxes based on this logic, and subsequently paid capital gains tax on 100% of the value of any forked cryptocurrencies you sold I'd expect that to turn out fine for you even if the IRS ends up disagreeing. The IRS has an entire appeals process because they expect to encounter scenarios where there aren't clear answers.

An old but entertaining example, what's the inheritance tax value of a famous work of art that is illegal to sell because it contains a stuffed bald eagle?

https://www.nytimes.com/2012/07/22/arts/design/a-catch-22-of...