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On The Brink with Castle Island

Castle Island Ventures
Bitcoin
Web3
Ethereum
Coinbase
Stablecoins
Decentralization
Blockchain Technology
Cryptocurrency
Crypto
Bitcoin ETF
Capsule
CASA
Dynamic
Tether
Artificial Intelligence
Fileverse
Elizabeth Warren
Layer Two Roll-Ups
Fairshake PAC
Privacy In Blockchain

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

PublishesDailyEpisodes685Founded6 years ago
Number of ListenersCategories
BusinessInvestingTechnology

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Latest Episodes

Wyatt sits down with Pbj, the founder of Perpl, a prominent perpetuals exchange on the imminently launching Monad blockchain. In this episode:

• How large are perp exchanges in the crypto market?

• Why perps are attractive to crypto users and tra... more

Dave Balter, the co-founder and CEO of Flipside Crypto joins the show. In this episode we discuss:

• How Flipside has shifted its product to fully harness the power of LLMs for analyzing public blockchain networks.

• Building a product organizati... more

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

• Will stablecoins drive deposit flight from the banks?

• Is FDIC insurance obsolete?

• Can CBDCs provide real privacy?

• ICE invests in Polymarket

• North Dakota is l... more

Pelle Braendgaard, the co-founder and CEO of Notabene joins the show. In this episode we discuss:

• Pelle’s background and path to co-founding Notabene.

• The travel rule and how institutions achieve compliance for blockchain transactions.

• The... more

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Recent Guests

Pelle Braendgaard
Co-founder and CEO of Notabene
Notabene
Episode: Pelle Braendgaard on the Notabene Flow payments platform (EP.674)
Ben Ward
Co-founder of RockSolid protocol
RockSolid
Episode: Ben Ward & Steven Pack (RockSolid) on DeFi Vaults (EP.671)
Steve Pack
Co-founder of RockSolid protocol
RockSolid
Episode: Ben Ward & Steven Pack (RockSolid) on DeFi Vaults (EP.671)
Walt Smith
Investor and thought leader in the Bitcoin and crypto space
Standard Crypto
Episode: Walt Smith (Standard Crypto) on VC Investing in Bitcoin (EP.666)
Austin Federa
Co-founder of DoubleZero
DoubleZero
Episode: Austin Federa (DoubleZero) on Building a Better Internet (EP.664)
Daniel Lev
Founder of Coinflow
Coinflow
Episode: Daniel Lev (Coinflow) on Stablecoin Payments (EP.662)
Sandy Kaul
Head of Digital Assets at Franklin Templeton
Franklin Templeton
Episode: Sandy Kaul (Franklin Templeton) on Onchain Asset Management (EP.660)
Luke Xie
Founder of SatLayer, a Bitcoin economic layer focused on yield generation in DeFi
SatLayer
Episode: Luke Xie (SatLayer) on The Next Generation of Bitcoin Yield (EP.657)
Huff Haas
Founder of Pear Protocol, discussing crypto market cycles and trading strategies
Pear Protocol
Episode: Weekly Roundup 08/15/25 (DAT fine print, stablecoin L1s, banks vs stables) (EP.656)

Hosts

Matt Walsh
Co-host and Partner at Castle Island Ventures, Matt Walsh brings insights from his extensive experience in venture capital and blockchain investments.
Nic Carter
Co-host and Partner at Castle Island Ventures, Nic Carter is known for his expertise in cryptocurrency and blockchain technology, frequently sharing insights on industry dynamics.

Reviews

4.8 out of 5 stars from 554 ratings
  • Used to be good

    bleh

    Apple Podcasts
    4
    kfixbwhdisa
    United States2 months ago
  • Used to be good

    Nic’s amoral embrace of all things AI strikes me as particularly soulless. And shameless. Very useful to him no doubt but on the human level, appalling. I am disgusted.

    Apple Podcasts
    1
    kfixbwhdisa
    United States5 months ago
  • Solid information

    I’ve really grown into Nic and Matt and am a big fan of their delivery.

    Very consistent, nic is definitely my favorite crypto “ journalist “

    Apple Podcasts
    5
    xxflightbenefitsxx
    United States6 months ago
  • Like the show, but you guys sometimes go into areas you don’t know anything about

    I really enjoy your podcast. I do. But, I find it is interesting that you guys are veering into politics because one person is pandering to you. Can’t believe you didn’t watch the last debate and you are commenting on it. Really?

    You are doing the exact same thing you criticize mainstream media for. It’s pretty clear you are just riffing based on something you’ve heard second or third hand and it makes you guys seem less credible. Do better and follow your own advice.

    Jan 6 is disqualifying b... more

    Apple Podcasts
    4
    Jack-222
    United Statesa year ago
  • An unimportant country

    The English man declared on this podcast today that Ireland was an “unimportant country”

    Yet the country he immigrated to can proudly say 23 of their presidents trade their roots back to ireland

    There is even a day set aside for it sometime in march - I’m sure he’s aware of it.

    I could continue to explain how on numerous fronts, just how important Ireland is strategically to the states but as we all know trying to explain this to an English man is like talking to the wall.

    Much love from I... more

    Apple Podcasts
    1
    Sim Boats
    United Kingdoma year ago

Listeners Say

Key themes from listener reviews, highlighting what works and what could be improved about the show.

Some criticism exists regarding the hosts' forays into non-crypto topics, with listeners urging more focus on relevant subject matter.
There is appreciation for the quality of content, especially regarding updates in the crypto market and regulatory insights.
Listeners appreciate the insightful analysis and the balance of humor with serious topics, highlighting the engaging dynamics between the hosts.

Chart Rankings

How this podcast ranks in the Apple Podcasts, Spotify and YouTube charts.

Talking Points

Recent interactions between the hosts and their guests.

Pelle Braendgaard on the Notabene Flow payments platform (EP.674)
Q: What market does Notabene Flow aim to address?
Notabene Flow aims to address the $120 trillion B2B market by providing a network that allows real-time reconciliation and compliance for stablecoin transactions, enhancing business operational efficiency.
Pelle Braendgaard on the Notabene Flow payments platform (EP.674)
Q: Can you explain what the travel rule is and how businesses can comply with it?
The travel rule requires that customer information travels along with payment messages in a way that is embedded in traditional payment systems. For crypto transactions, it necessitates implementing messaging frameworks to comply, which Notabene helps institutions with.
Walt Smith (Standard Crypto) on VC Investing in Bitcoin (EP.666)
Q: What do you think is investible or can be new in and around Bitcoin?
Walt discusses the potential of proof of work and proof of stake as foundational designs for networks but is skeptical about top-down approaches like UBI.
Walt Smith (Standard Crypto) on VC Investing in Bitcoin (EP.666)
Q: So how did you get into Bitcoin and crypto?
Walt shares that he initially thought about going to med school but found his interest in economics, which led him to study Austrian economics and discover Bitcoin during his time at Grove City College.
Luke Xie (SatLayer) on The Next Generation of Bitcoin Yield (EP.657)
Q: How do you perceive the perception of Bitcoin among different cultural backgrounds?
Asian institutions are more pragmatic with Bitcoin, actively deploying into Bitcoin DeFi, while Western institutions tend to adopt a wait-and-see approach.

Audience Metrics

Listeners, social reach, demographics and more for this podcast.

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Frequently Asked Questions About On The Brink with Castle Island

What is On The Brink with Castle Island about and what kind of topics does it cover?

Exploring the dynamic landscape of blockchain technology, this podcast features engaging discussions on the latest news and developments within the cryptocurrency sector. Co-hosts share insights into significant market trends, delve into financial innovations, and interview prominent experts who provide perspectives on regulatory changes and industry advancements. Content often combines substantive analysis with a light-hearted approach, making complex subjects accessible and enjoyable for listeners interested in finance, investing, and technology. The podcast notably balances technical details with general market commentary, making it appealing to both seasoned professionals and newcomers to the blockchain space.

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1. Empire
2. Unchained
3. The Breakdown
4. Supply Shock
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On The Brink with Castle Island launched 6 years ago and published 685 episodes to date. You can find more information about this podcast including rankings, audience demographics and engagement in our podcast database.

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What guests have appeared on On The Brink with Castle Island?

Recent guests on On The Brink with Castle Island include:

1. Pelle Braendgaard
2. Ben Ward
3. Steve Pack
4. Walt Smith
5. Austin Federa
6. Daniel Lev
7. Sandy Kaul
8. Luke Xie

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