If darknet markets can do it, so can we. I’m a distributed systems security specialist. This is existing technology. We would require something like spamhouse etc. Everybody can run an email sever, but building reputation takes a bit. Blockchain can do some parts of that to make it auditable.
Hard to do in a manner that is resistant to gaming by bad actors (see: Reddit).
If darknet markets can do it, so can we. I’m a distributed systems security specialist. This is existing technology. We would require something like spamhouse etc. Everybody can run an email sever, but building reputation takes a bit. Blockchain can do some parts of that to make it auditable.