
On The Brink with Castle Island
Hosts Matt Walsh and Nic Carter of Castle Island Ventures explore news and deals in the public blockchain space and talk to some of the leading experts in the industry. Learn more and stay up to date at CastleIsland.vc and follow on twitter @CastleIslandVC
Latest episodes

12 snips
Jul 14, 2025 • 34min
Nikhil Raghuveera (Predicate) on Policy Engines for Blockchains (EP.646)
Nikhil Raghuveera, founder of Predicate and expert in public policy and economics, joins to explore how blockchain can become a compliant financial ecosystem. He discusses the integration of transaction rules to enhance scalability and security in on-chain finance. The conversation dives into improving KYC and AML compliance, the future of digital cash, and programmatic rules for stablecoins. Nikhil emphasizes collaboration with financial firms to foster privacy and trust while addressing the needs of unbanked populations.

9 snips
Jul 11, 2025 • 35min
Weekly Roundup 07/11/25 (New BTC ATH, Crypto Week, Zelensky suit scandal) (EP.645)
Bitcoin soars to a new all-time high while the community remains surprisingly muted. The recent $9 billion acquisition by CoreWeave of Core Scientific highlights the booming intersection of Bitcoin mining and AI. Amid discussions of Zelensky's attire, the implications of prediction markets and crypto regulations are explored. GMX experiences a significant hacking incident, raising questions about security in the crypto space. The conversation also touches on the intricate challenges of valuing Ethereum amidst evolving financial models.

Jul 10, 2025 • 29min
Zac Townsend (Meanwhile) on Bitcoin Life Insurance (EP.644)
Zac Townsend, founder and CEO of Meanwhile, dives into the innovative world of Bitcoin-denominated life insurance. He explains how his company integrates Bitcoin into financial strategies and generates yield. Zac discusses the transformation of life insurance, comparing traditional models to Bitcoin alternatives. He shares insights on Bitcoin's role in emerging capital markets and the potential challenges of centralization. This conversation highlights the unique opportunities Bitcoin presents, particularly in economies with unstable currencies.

13 snips
Jul 9, 2025 • 22min
Charles Hamel (Opera MiniPay) on Globalizing Dollar Access (EP.643)
Charles Hamel discusses innovative ways the MiniPay app is transforming dollar transactions in sub-Saharan Africa. The evolution from a crypto wallet to a tailored stablecoin solution highlights the growing demand for dollar-based financial services. Payment velocity and integration of stablecoins into traditional finance are emphasized, alongside the importance of user experience and regulatory factors. The conversation also explores how stablecoins could influence the U.S. dollar's dominance and reshape the global financial landscape.

10 snips
Jul 4, 2025 • 37min
Weekly Roundup 07/04/25 (Tokenized stocks, Crypto Week, BBB passes) (EP.642)
This week, the hosts dive into the chaos of EthCC and discuss Robinhood's surprising venture into Bitcoin. It's 'crypto week' in July, bringing along significant bank charter applications from Circle and Ripple. AI companies are now mining Bitcoin while concerns grow about Bitcoin treasury companies. They explore the intricacies of tokenized stocks and ponder whether AI could lead to a socialist transformation. Plus, the recent passage of the Budget Bill stirs political discussions amid looming economic uncertainties.

Jul 2, 2025 • 37min
Chris Maurice (Yellow Card) on Stablecoin Adoption in Africa (EP.641)
Chris Maurice, founder of Yellow Card, shares insights into his pan-African stablecoin business. He discusses the evolution of stablecoins and their critical role in enhancing international payments, particularly in underserved markets. Chris highlights regional differences in stablecoin adoption across Africa and the shifting regulatory landscape. He expresses concerns about crypto-dollarization and examines Tether's market dominance. The conversation also explores the future of bank engagement with stablecoins and necessary advancements in stablecoin infrastructure.

13 snips
Jun 30, 2025 • 32min
Bernardo Bilotta (Stables Money) on Stablecoin Fintech in APAC (EP.640)
Wyatt chats with Bernardo Bilotta, founder of Stables.money, a platform revolutionizing stablecoin use in the Asia-Pacific region. They discuss the importance of stablecoin for saving and spending, and how it drives retail and institutional adoption. Bernardo shares insights on the innovative Just-In Funding Model for real-time transaction settlements and highlights a tailored financial product for remote workers. They also explore the challenges of compliance and security in fintech, emphasizing the need for trust in the evolving stablecoin landscape.

8 snips
Jun 27, 2025 • 37min
Weekly Roundup 06/27/25 (Bitcoin for mortages, Fiserv adopts stables, Fed drops reputation risk) (EP.639)
This week dives into the fascinating intersection of crypto and traditional finance. Discussions cover the Federal Housing Finance Agency's historic move to accept cryptocurrency for mortgages. The implications of New York City's political landscape are examined amidst concerns about governance and housing. Fiserv’s bold steps into the world of stablecoins with major partners are highlighted, as well as the changing face of banking regulations. With Bitcoin gaining traction, the potential for outdated banking hours raises eyebrows. All in all, a lively exploration of innovation and market dynamics!

10 snips
Jun 26, 2025 • 39min
Josh Frank (The Tie) on Crypto Market Intelligence (EP.638)
Josh Frank, the founder and CEO of The Tie, a market intelligence platform for digital assets, shares insights on the evolving crypto landscape. He discusses The Tie's origin and the critical role of sentiment data, emphasizing its impact on trading and investment strategies. Josh explores the challenges of identifying authentic projects within a scam-filled market and highlights the Canton Network's contributions to privacy in transactions. He also touches on innovative strategies for profitability that leverage data insights to enhance shareholder value.

10 snips
Jun 23, 2025 • 43min
Luca Prosperi (M0) on a Universal Stablecoin Platform (EP.637)
Luca Prosperi, CEO and Co-Founder of M0, dives into the innovative world of decentralized finance and stablecoins. He shares invaluable lessons learned from MakerDAO and explores the dual banking system's influence on M0's creation. Prosperi discusses the evolution of stablecoins, emphasizing interoperability and liquidity as game-changers. He also addresses challenges in launching a stablecoin, the role of open-source platforms, and how M0 plans to revolutionize financial services with customizable and decentralized assets.