Using Last In, First Out is a good idea to use as a Cost basis. I was told just to be consistent.

Now, if I purchase anything that takes Bitcoin, like at the Conference , or my meat from K&C Cattle on the Oshi App (Sats back), I use Strike, so that the cash on Strike turns into Bitcoin on the other end using the Lightning Rails, so no tax event. All of my Zaps⚡️ are from Strike.

Hope that helps…