The Blockchain Group, formerly known as Leadmedia Group SA, is a France-based company that specializes in data marketing services. The Company provides personalized consumer engagement and retention for advertisers through data publishing, data collection and data enrichment; through technology tools for consumer targeting, data-mining and customer relationship management (CRM) according to behavior and context; as well as through platforms for distribution and delivery of customer interactions. The Company develops know-how in performance marketing, generating contacts and customer retention solutions. It operates in France and Brazil through its subsidiaries: RAIE, Leadmidia Participacoes, Webtrust, core MD, LeadMidia do Brasil, DigitalMe, Groupe ShopBot and Graph Insider. It serves the media, travel, health, private sales, finance, and insurance sectors and a platform which provides real-time advertisements.