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Updated: March 3, 2026
Castle Island Ventures
Founded: 2018
We are a venture capital firm focused exclusively on public blockchains.
Total Investments
61
Successful Exits
2
About the Program
Program Type
Investment Focus Areas
Description
Early-stage investor (writes $250k–$1M checks) focused on equity-only Bitcoin and public-blockchain companies, differentiated by ex-Fidelity expertise and research, podcast, and stablecoin reports connecting founders to banks and ETF issuers.
Founded2018
Location
Countries Invested
Investment Offer
Can Lead Rounds
Yes
Details
Avg Check: $100K - $5M ·