I see, so you publish research without providing a baseline. Good scienceing.
He wrote and open sourced his block parser, then published a script to calculate the taint. That's pretty good in my opinion. I'll run those 10 addresses you list and find a baseline from those.
28% taint on one transaction could just be somebody cashing out from pirate and spending 28% of it on drugs, could it not? The 6% total taint is slightly more interesting, but again, we have no baseline for comparison.
The 28% means that when Silk Road decided they had too much in their hot wallet and should move a few thousand offline, 28% of the coins they moved offline were from pirate's wallet. Kind of. It certainly doesn't mean that a pirate lender spent 28% of his interest payment on drugs. If the coins all came from a single pirate lender then the 28% means that the drug payment was made up 28% of coins from pirate and 72% of other unrelated coins. Kind of, again.
Except you don't know for sure how coins move through SR, just good guesses. However, thanks for providing a slightly clearer picture of what that means. Kind of
. Thanks for running those addresses. I want to play around with getting the block parser running sometime, but today's not that day.