Champagne Houses Louis Roederer, Fleur de Miraval and Henri Giraud have signed up the site, along with Château Pichon Longueville Comtesse de Lalande, and Weingut Egon Müller (see below for the full list). The winemakers will be able to sell the wines they choose on the platform, and directly access and interact with WineChain’s community of buyers.