Castle Island Ventures

Castle Island Ventures was founded in 2018 around a conviction that public blockchains could transform money, financial services, and the architecture of the internet. The firm describes itself as a venture capital firm focused exclusively on public blockchains, investing in early-stage companies at the intersection of traditional finance and public blockchain technology.

Its mission is to support entrepreneurs building the infrastructure and applications needed to help these protocols reach their potential. The firm's investment themes include monetary networks, financial services, and internet architecture, and its portfolio spans areas such as stablecoin payments, digital asset security, blockchain intelligence, crypto trading infrastructure, and decentralized protocols. Based in Boston, Castle Island also shares its perspectives through writing, a newsletter, and the On The Brink podcast.