On The Brink with Castle Island

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

Episodes

June 6, 2025 27 mins

Matt and Nic are back for another week of news and deals. In this episode: 

  • Circle goes public and has an explosive first day
  • The IPO window is open
  • Circle’s vision for CPN
  • Pump.fun is launching a token
  • Will pump.fun cannibalize Solana?
  • JPM will let clients use Bitcoin ETFs as collateral
  • Strategy introduces new offerings
  • Magic Eden’s strange Trump wallet app announcement
  • Truth Social Bitcoin ETF
  • A K Pop Bitcoin access vehicle
  • ...
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Wyatt sits down with Isha Varshney from the Celo Foundation to talk stablecoins. Covered in this episode:

  • Payments in Kenya and Sub-Saharan Africa
  • Stablecoin usage and USDT
  • The future of non-stable tokens
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Matt and Nic are back with another week of news and deals. In this episode: 

  • Warning signs for the Bitcoin access vehicles?
  • Has Bitcoin lost the MoE battle?
  • Is OCP 2.0 over?
  • The Dept of Labor rescinds their anti-crypto 401k guidance
  • Cantor Fitzgerald is launching a bitcoin/gold fund
  • Is it mathematically possible to give Bitcoin upside and gold downside?

Content mentioned: 

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We sit down with Anthony Yim, Artemis cofounder, to talk about the latest report from Artemis, CIV, and Dragonfly, providing brand new estimates of stablecoin payments volume. In this episode:

  • Why we decided to work on the new report
  • How we obtained the estimates
  • Why we decided to put together a bottom-up estimate
  • Stablecoin b2b volumes compared to traditional b2b
  • How do you measure stablecoin transactions?

Download the ...

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Markus Franke and Denney Kwok from Mento Labs join the show. In this episode: 

  • Non-USD stablecoins
  • On-chain FX
  • Microlending and financing for emerging markets
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Matt and Nic are back for another week of news and deals. In this episode: 

  • Trump’s crypto dinner reviewed
  • Bitcoin access vehicles
  • NYT stablecoin coverage
  • Sui is hacked and censors the blockchain
  • Kraken is launching tokenized stocks
  • Circle in acquisition talks
  • The GENIUS Act passes Cloture in the Senate
  • Hong Kong passes stablecoin legislation

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Wyatt sits down with Andrew MacKenzie, founder of Agant, the issuer of GBPA, a pound sterling stablecoin. In this episode: 

  • The potential emergence of non-USD stablecoins
  • The prospect of a GBP-backed stablecoin
  • The British crypto regulatory environment
  • How global financial institutions are positioning around stablecoins
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Matt and Nic are back with another week of news and deals. In this episode:

  • Why is Boston such a good sports city?
  • Price inflation in dinosaur skeletons
  • Cryptopunks IP is sold
  • Machinsky is sentenced
  • Nakamoto Holdings launches
  • Meta wants to add stablecoins to its platforms
  • Exchanges are honeypots for KYC data
  • Coinbase suffers a data breach
  • The GENIUS act is going to a vote next week
  • GENIUS act new provisions
  • More Movement shena...
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Wyatt sits down with Alex Cutler, founder of Aerodrome for another episode in our stablefi series. In this episode: 

  • DEX trading advantages
  • Building on-chain FX
  • DeFi as a backbone
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Wyatt sits down with TN, cofounder of Pendle. Covered in this episode: 

  • How Pendle works
  • The evolution from alt yield to stable yield
  • DeFi's future core assets
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Matt and Nic are back with another week of news and deals. In this episode:

  • We have a new Pope
  • The etymology of ampersand
  • The GENIUS act collapses spectacularly
  • Coinbase consummates its acquisition of Deribit
  • Did World Liberty Financial’s USD1 torpedo the GENIUS act?
  • Did “pro crypto” democrats snake on the industry
  • Scott Bessent thinks stablecoins could reach $2T
  • The OCC says banks can provide crypto custody and execution
  • Stri...
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Adam Healy, co-founder of Station 70 and Josh Schwartz, co-founder of Fordefi join the show. In this episode we discuss:

  • The collaboration between Station 70 and Fordefi on failover MPC wallets. Announcement here.
  • The state of the wallet category
  • Best practices for blockchain cybersecurity
  • Read more
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Wyatt sits down with David Taylor of Etherfuse. In this episode: 

  • MXN stablecoins and other currencies
  • Shaping regulatory frameworks
  • Who wins out: innovators vs financial incumbents
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Wyatt sits down with Justin Garland and Hannah JoJo of Asymmetry Finance. In this episode, we cover: 

  • The evolution of yield in DeFi
  • Primitives users want
  • Crypto risk assessment

Learn more about Asymmetry

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Matt and Nic are back with another week of news and deals. In this episode: 

  • Will stablecoins disrupt credit cards?
  • The US Treasury Advisory Committee drops a report on stablecoins
  • Mastercard and Visa launch stablecoin integrations
  • Movement labs has more scandals
  • Are quantum timelines accelerating?
  • The real risk of quantum to Bitcoin
  • Could a quantum break fix Bitcoin’s security budget?
  • Are any Bitcoin purists left?
  • Circle turn...
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Wyatt sits down with Kedian Sun, the founder of Level Money. In this episode: 

  • Stablecoin usage in DeFi today
  • Fiat-backed stablecoins vs other "stable" assets
  • Ethereum vs other blockchains for stablecoins
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Matt and Nic are back for another week of news and deals. In this episode: 

  • Is Bitcoin decoupling?
  • The Fed rescinds anti-crypto letters from 2022 and 2023
  • Upexi raises $100m PIPE to invest in Solana
  • Cantor, Tether, Softbank and Bitfinex inject $3.6b into 21 Capital, a Bitcoin acquisition vehicle
  • Bitcoin ETFs versus bitcoin acquisition companies
  • Trump is hosting a dinner for $TRUMP holders
  • Charles Schwab wants to launch crypto ...
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Matt and Nic are back with another week of news and deals. In this episode:

  • We recap Nic’s article on why Signature collapsed
  • Crypto exchange OKX announced their plans to expand to the US
  • Kraken announced that US equities are now supported on the exchange
  • MANTRA, a layer 1 network focused on RWAs, saw the price of its native token crash 90% in a matter of hours
  • Global Payments agreed to acquire Worldpay, a payments processor, ...
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Wyatt sits down with Fred Hsu and Michael Ho of D3 to talk domain markets. In this episode: 

  • The existing domain name industry and legacy systems
  • An interoperable marketplace for domains
  • New financial promitives around domains and RWAs

More about D3

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Yuval Rooz and Eric Saraniecki, co-founders of Digital Asset join the show. In this episode we discuss:

  • The origins of Digital Asset and the path to starting the firm.
  • Views on privacy in the context of public blockchains.
  • How enterprises and financial institutions are approaching tokenizing assets and levera...
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