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On The Brink with Castle Island

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

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

PublishesDailyEpisodes694Founded6 years ago
Number of ListenersCategories
InvestingTechnologyBusiness

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Latest Episodes

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

• Is Quantum FUD causing Bitcoin to sell off?

• Ray Dalio is worry about Quantum

• Scott Aaronson is worried about quantum computing

• Vitalik is worried about quantum more

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

• The Senate Ag Cmte publishes a Market Structure draft

• Paul Atkins' token taxonomy speech

• Fed Governor Stephen Miran gives a major stablecoin speech

• Grayscale fi... more

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

• Tom Brady's clone dog

• We reminisce on the Nic Carter v Mike Green debate

• Is the government shutdown draining market liquidity?

• The trouble with Opendimes

• B... more

Keone Hon, founder of the Monad Foundation joins the show. In this episode:

• From the point of view of Keone's trading background, what is the promise of blockchains?

• Reimagining financial systems with blockchains in 2025

• Why build Monad, a... more

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Recent Guests

Keone Hon
Co-founder of the Monad Foundation
Monad Foundation
Episode: Keone Hon (Monad Foundation) on Blockchains Built to Scale (EP.683)
Giovanni Vignone
Founder of Octane Security
Octane Security
Episode: Giovanni Vignone (Octane Security) on Protecting Onchain Assets (EP.682)
Scott Bessent
Noted currency trader involved in Argentine peso trading
Episode: Weekly Roundup 10/31/25 (DATs selling coins, prediction market problems, Bessent's pesos) (EP.681)
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)

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 558 ratings
  • What happened to you being vocal about the “bad boys”??

    The way you’ve flipped the pancake on the bad actors in your industry and inability to call out the grift going on by the White House is hugely disappointing. CZ gets pardoned and you call this “controversial”?? Your listeners have longer memories.

    Apple Podcasts
    2
    notageek99
    United Statesa month ago
  • Used to be good

    bleh

    Apple Podcasts
    4
    kfixbwhdisa
    United States3 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 States6 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 States7 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

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.

Apple Podcasts
#235
Italy/Business/Investing
Apple Podcasts
#31
Israel/Business/Investing
Apple Podcasts
#109
Israel/Business
Apple Podcasts
#117
Singapore/Business/Investing
Apple Podcasts
#124
Argentina/Business/Investing
Apple Podcasts
#150
Colombia/Business/Investing

Talking Points

Recent interactions between the hosts and their guests.

Giovanni Vignone (Octane Security) on Protecting Onchain Assets (EP.682)
Q: How important is it that security is a day one thought?
It will be cheaper for you to approach this from day one, even though you don't think it is.
Giovanni Vignone (Octane Security) on Protecting Onchain Assets (EP.682)
Q: Where do you guys sit in a stack or in a platform of offerings that a protocol might put into place?
We actually like to think of ourselves as a holistic solution from the pre-deployment standpoint, focusing on continuous vulnerability analysis.
Giovanni Vignone (Octane Security) on Protecting Onchain Assets (EP.682)
Q: What do people not know or get wrong about security and crypto currently?
There's a lot of things that go into security, especially in the crypto ecosystem, mainly because the risk profile in this space is probably the highest out of any space I've ever seen.
Keone Hon (Monad Foundation) on Blockchains Built to Scale (EP.683)
Q: Can you speak to why and how you guys think about decentralization? Why do you think it's important?
Building decentralized systems prevents arbitrary decisions that could affect trading and provides a clear set of rules for users.
Keone Hon (Monad Foundation) on Blockchains Built to Scale (EP.683)
Q: What gets you excited today about on-chain finance?
I'm excited that on-chain finance offers everyone access to financial tools and capital that weren't available before.

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. Stephan Livera Podcast
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On The Brink with Castle Island launched 6 years ago and published 694 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. Keone Hon
2. Giovanni Vignone
3. Scott Bessent
4. Pelle Braendgaard
5. Ben Ward
6. Steve Pack
7. Walt Smith
8. Austin Federa

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