This is true. I could be wrong, but aren't blockchain transactions publicly visible?
I was thinking more along the lines of having contract breaches being publicly visible, which would motivate the more sociopathic egotists of the world to keep up appearances of fairness. Making it harder to just move to the next victim because a reputation could be built up.
Edit: also bridging the gap between expensive lawsuits that end up not being worth it, or the temptation to publicly shame the bullies which is almost always tacky and never dispassionate.