[menage]

I don't think you even need a blacklist for this to be of real benefit - if every fancy bottle sold is expected to be accompanied by a blockchain transaction moving the bottle's certificate (originally produced by the winemaker, and unforgeable) then you'll only be able to sell a fancy bottle of wine if at some point in the past you've purchased an equivalent bottle from someone else with a certificate.

There is still the chance that someone along the way consumes the real wine or sells it (at a loss?) to someone who doesn't care about authentication, and then sells on a fake bottle with the real certificate - but:

- at least in that case there would be a well-defined chain of owners that should make it much simpler to figure out who's doing the counterfeiting.

- you can only do this once for each real bottle that you purchase, since you can't forge the certificates.