Alright, long story short, I rushed my first DNM purchase and essentially all I used was a tor browser bundle. Yes, I tumbled my coins, but after spending a lot of time on this thread, I've decided for my next purchase I want to use Tails and get a burner laptop etc. Anyways, my question here is if my bad opsec will leave evidence on my computer? It's a shared PC that my roommates also use that have all of their documents/photos on so wiping the entire system isn't really ideal here. I'm talking about worst case scenario here aka my computer is taken by LE and they're looking for evidence. I took other precautions such as tor, tumbling and PGP. Not sure if thats enough. Thanks.
I wrote a lot. I deleted it. You're okay. You don't buy distribution quantities. There are probably artifacts on that machine that could be used to determine your involvement in online marketplaces, if only via 'bitcoins for seemingly no use' and 'tor browser' and so forth.