Martin Schweiger's talk on April 29, 2021, discusses the intersection of 4x4 innovation financing and blockchain technology, emphasizing how blockchain can enhance crowdfunding for new products. He critiques traditional platforms like Kickstarter for their limitations and proposes a framework for using blockchain tokens to facilitate pre-sales, market testing, and customer engagement. The talk outlines the innovative potential of tokenization in different phases of product development, aiming to reduce risk and improve funding opportunities.