
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

Jun 6, 2025 • 28min
Weekly Roundup 06/06/25 (Circle IPO, Singapore rules, Trump wallet?) (EP.632)
This week, the hosts dive into Circle's explosive IPO and its implications for the crypto industry. They analyze the future of stablecoins and the innovative strategies shaping payment networks. Controversy brews around Magic Eden's partnership tied to a Trump wallet, while MoonPay secures a coveted Bit license. The discussion also highlights K-pop's entry into the crypto space with a unique Bitcoin treasury strategy. Finally, they touch on Singapore's regulatory shifts and the global impact of South Korean culture on cryptocurrency.

13 snips
Jun 4, 2025 • 34min
Isha Varshney (Celo) on Stablecoin Adoption Across Markets (EP.631)
Isha Varshney, Head of Ecosystem at Celo Foundation, dives into the world of stablecoins, particularly their impact in emerging markets like sub-Saharan Africa. She discusses the revolutionary effect of M-Pesa on financial inclusion in Kenya and its potential to reshape lending. The conversation also explores the rise of USDT for cross-border transactions and the innovative Minipay platform. With a focus on blockchain's empowering role in local economies, Varshney envisions a future where stablecoins enhance accessibility and efficiency in financial services.

5 snips
May 30, 2025 • 22min
Weekly Roundup 05/30/25 (Bitcoin Access Vehicles, GME buys BTC, Pangea Fund) (EP.630)
This week, the hosts delve into potential warning signs for Bitcoin access vehicles and whether Bitcoin has lost its battle as a medium of exchange. They discuss GameStop’s foray into Bitcoin investments and the subsequent market reactions. Additionally, regulatory shifts, including the Department of Labor's reversal on anti-crypto guidance, are examined. The episode also highlights innovative investment vehicles like Cantor Fitzgerald’s Bitcoin/gold fund and tackles disturbing revelations from the crypto hedge fund sector.

May 29, 2025 • 26min
Anthony Yim (Artemis) on Stablecoin Payments from the Ground Up (EP.629)
Join Anthony Yim, cofounder of Artemis, as he dives into his company's groundbreaking report on stablecoin payments. He discusses the meticulous process behind their volume estimates and why transparency is crucial in an industry plagued by misinformation. Anthony highlights the explosive growth of B2B transactions versus traditional methods and the challenges of tracking genuine usage. Additionally, he shares insights on how stablecoins can revolutionize borderless finance and improve accessibility for underserved populations.

9 snips
May 26, 2025 • 39min
Markus Franke and Denney Kwok (Mento Labs) on Stablecoins for FX (EP.628)
Markus Franke, Founder and CEO of Mento Labs with a robust background in finance, and Denney Kwok, Chief Product Officer with experience at Google, dive into the world of stablecoins. They discuss the revolutionary impact of non-USD stablecoins on foreign exchange markets and how these digital assets can enhance efficiency and accessibility. The conversation also covers the potential for on-chain microlending in emerging markets, highlighting how technology can empower underbanked regions and reshape traditional finance.

8 snips
May 23, 2025 • 34min
Weekly Roundup 05/23/25 (Genius Cloture, Sui hack, $Trump dinner) (EP.627)
Hosts dive into the absurdity of a Trump-themed meme coin dinner, revealing the mixed reactions and disappointments of attendees. They discuss the implications of recent hacking incidents in the Sui blockchain and Kraken's venture into tokenized stocks. The conversation covers the passage of the Genius Bill in the Senate, shedding light on legislative tensions. Additionally, they analyze misunderstood narratives around stablecoins, and the rise of AI wearables in tech, each bringing unique challenges to privacy and security in our digital lives.

May 21, 2025 • 31min
Andrew MacKenzie (Agant) on British Pound Stablecoins (EP.626)
In this engaging discussion, Andrew MacKenzie, founder of Agant and pioneer in the world of British Pound stablecoins, explains the significance of GBPA, the first pound sterling stablecoin. He navigates the complexities of the UK's regulatory environment and how it impacts financial institutions. MacKenzie shares insights on the rising interest in non-USD stablecoins and the transformative potential they hold for democratizing investment. He also highlights the changing mindset within traditional finance, as institutions rethink their strategies amidst the stablecoin revolution.

6 snips
May 16, 2025 • 41min
Weekly Roundup 05/16/25 (GENIUS is back, Coinbase data breach, Big Tech stables) (EP.625)
In this week’s discussion, the hosts explore Boston's impressive sports legacy and its cultural impact. They dive into the intriguing rise in dinosaur skeleton prices and share insights on the fascinating world of fossil discoveries. The conversation shifts to the crypto landscape, highlighting a data breach at Coinbase, the GENIUS act, and new developments in stablecoins. Additionally, the hosts touch on the explorations of ancient civilizations and the latest trends in blockchain and NFTs, making for a dynamic and entertaining blend of topics!

May 14, 2025 • 39min
Alex Cutler (Aerodrome) on DeFi’s Next Steps (EP.624)
In this discussion, Alex Cutler, founder of Aerodrome, shares his transformational journey into the world of crypto and DeFi. He dives into the advantages of decentralized trading, emphasizing the collaborative spirit of DAOs. Alex explores how on-chain foreign exchange can enhance liquidity and streamline global transactions. He also addresses the vital need for regulatory clarity and the integration of stablecoins in cross-border deals, all while dissecting the current challenges facing decentralized finance.

36 snips
May 12, 2025 • 33min
TN (Pendle) on Stable Yield (EP.623)
In this engaging discussion, TN, the cofounder and CEO of Pendle, shares insights on the evolution of decentralized finance and the shift towards stable yield offerings. He delves into the mechanics of Pendle, explaining Principal and Yield Tokens, and their role in providing stable returns. The conversation touches on asset selection strategies, the importance of user trust in DeFi, and the emerging integration of tokenized equities. TN also highlights user preferences for fixed-rate structures and the competitive edge of DeFi over traditional finance.