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On The Brink with Castle Island

Castle Island Ventures
Bitcoin
Web3
Ethereum
Coinbase
Decentralization
Blockchain Technology
Bitcoin ETF
Stablecoins
Cryptocurrency
Crypto
Capsule
CASA
Dynamic
Tether
Fileverse
Artificial Intelligence
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

PublishesDailyEpisodes691Founded6 years ago
Number of ListenersCategories
InvestingTechnologyBusiness

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Latest Episodes

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

Wyatt sits down with Giovanni Vignone, the founder of Octane Security, a crypto security platform focused on vetting application code pre-deployment. In this episode we discuss:

• What poses the greatest threat to crypto right now?

• How are hack... more

Matt and Nic are back for more news and deals. In this episode:

• Mastercard buys Zerohash for around $2b

• Fiserv has a catastrophic day

• Bitwise launches a Solana staking ETF

• Is there another regional banking crisis?

• EthZilla sold some... more

Geetha Panchapakesan, the founder and CEO of Tesser, joins the show. In this episode:

• Geetha's background in payments and how she arrived in stablecoins

• Major shifts across payments over Geetha's career

• Building a one-stop shop solution f... 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 558 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 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
  • 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.

Pbj (Perpl) on the Perp DEX Market & Monad's Imminent Launch (EP.677)
Q: Why should people get excited or care about Monad?
Monad allows for the construction of a fully on-chain central limit order book on an EVM, enabling composability benefits that haven't been feasible before.
Pbj (Perpl) on the Perp DEX Market & Monad's Imminent Launch (EP.677)
Q: Why are you building this product? Why now and why on Monad?
Building on Monad allows for a general purpose, market maker friendly environment with lower latency and competitive gas fees, necessary for a successful perpetual exchange.
Pbj (Perpl) on the Perp DEX Market & Monad's Imminent Launch (EP.677)
Q: What are they good for?
Perps are a derivative instrument allowing speculation or hedging with leverage on asset price action without holding the underlying asset.
Dave Balter (Flipside) on the convergence of AI and Blockchain Analytics (EP.676)
Q: What do you see as the future role of AI in consulting and analytics?
AI equalizes roles and allows analysts to contribute strategic value comparable to partners.
Dave Balter (Flipside) on the convergence of AI and Blockchain Analytics (EP.676)
Q: What are your general views on what's happening in the market for AI?
AI is shifting everything, with internal transformations at companies and a profound impact on the market.

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
5. The Pomp Podcast

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On The Brink with Castle Island launched 6 years ago and published 691 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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