Hello,
I buy Bitcoin locally with cash and charge a 3.5 percent commission. I then sell the Bitcoin in Kraken and cash out.
I've been noticing that some of the Bitcoins I get are tainted (
https://blockchain.info/taint/*bitcoin address here*) and I'd like to know what risks I'm taking by selling such Bitcoins there.
Should I be worried?
That was a really big issue some time ago, because bitcoin was mostly used for illegal activities.
When it was not known so well, and when it was actually cheap,
BTC was really hard to spend in a regular online shop with legit things: the stores simply didnt know about bitcoin yet.
Back in those times, illegal activities was the big part of the BTC volume, but it has changed. People now are using it for a good purposes mostly, but tainted bitcoins are still present in the network.
Just find a reasonable mixer service, and deposit them there. If you will let them go through it, im sure that will fix your issue.
You should always check if your payments do not contain tainted bitcoins.