Valentin Demé

Valentin Demé is Co-founder and CEO at Cube Network, a Web3 and tech startup incubator and accelerator based in Angers, France, which he co-founded in May 2023. Cube selects approximately ten startups per year from over 300 applications, providing structural support, financing, and mentorship. The incubation phase runs around six months for early-stage companies with no revenues yet, followed by a twelve-month acceleration phase for projects facing regulatory or financial scaling challenges. Cube has facilitated €7 million raised across its portfolio over two years. Mentors and advisers associated with the programme include Faustine Fleuret from Adan, Owen Simonin from Meria, and Ivan de Lastours from Bpifrance.

Demé is also co-founder and producer at 8s Productions, a media production company operating studios under the REDBOX brand in Angers, producing content for YouTube, television, and cinema. He co-founded Cryptoast, a media outlet focused on crypto and Web3. He sits on the board of directors of Adan, the French association representing the Web3 sector, a position he has held since June 2023. He is the author of Bitcoin et autres cryptomonnaies, bien comprendre avant d'investir, published by Larousse, with 30,000 copies sold. In 2025, Cube launched Spotlight, a competition and YouTube programme designed to identify and select entrepreneurs for its third intake, co-produced with content creator Amixem and judged by a panel including Éric Larchevêque and Nicolas Louvet.