Earlier quoted context omitted.
Nah, it's just up to you to justify the value of the asset when it forks. Frequently that's $0. If it's a meaningful fork, like BTC/BCH/BSV you could easily use the value at listing on the first exchange as the cost basis, as that's what everyone else will do in lieu of a 409(a) type valuation, which of course doesn't exist because crypto doesn't have intrinsic value. It just means more legwork for you. This is also…
I'm not sure if numbering is stable (so perhaps this was A24 at one point), but I find this the most relevant portion of the FAQ: Q27. I received cryptocurrency that does not have a published value in exchange for property or services. How do I determine the cryptocurrency’s fair market value? A27. When you receive cryptocurrency in exchange for property or services, and that cryptocurrency is not traded on any crypt…
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...