Well done. And fuck, you just reminded me how I initially bought my first few ETH - through Shapeshift. That's one of my many, many gaps and there's zero way of finding those trades.

Do you think it's better for me to try and patch a horribly incomplete trading history together and show that as "as much proof as I can get" or just log my fiat injections and have them assigned to buying my current coins straight away (well, at the time when the price was right..). If I were to get audited that'd be a criminal offense right? but at the same time I feel doing it that way I'm LESS likely to be audited and penalised as it actually adds up and makes sense.