The world of luxury wines and spirits has an authenticity problem.

The 2016 documentary sour grapes, which focused on a wine forger who swindled collectors out of millions of dollars, proved that when it comes to luxury alcohol, it’s sometimes hard to know what you’re really buying. In another case, more than a third of a batch of 55 rare vintage Scotch whiskey bottles were found to be fake after being analyzed by the Scottish Universities Environmental Research Center in 2018.

One company, Blockbar, is trying to solve this problem by selling NFTs tied to collectibles…