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On The Brink with Castle Island

On The Brink with Castle Island

Castle Island Ventures 730 Episodes Oct 9, 2026

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

Weekly Roundup 10/09/26 (Going Bunker Mode, classical ECC breaks, AI's math discoveries) (EP.744)
Weekly Roundup 10/09/26 (Going Bunker Mode, classical ECC breaks, AI's math discoveries) (EP.744) Oct 9, 2026 37:04 Matt and Nic are back with more deals and news. In this episode:  Is it appropriate to have AI manage your fantasy league? Quant firms are hiring "quals" Justin Drake scares everyone in crypto Did AI destroy math? Why a classical ECDSA break would be worse than a quantum one Why we lean forward hash-based signatures for post-quantum Why rotating your address doesn't help now Is Bitcoin the "least
Esther Wong (Cashi) on Making Stablecoins Spendable (EP.743)
Esther Wong (Cashi) on Making Stablecoins Spendable (EP.743) Oct 5, 2026 29:07 Esther Wong, founder and CEO of Cashi joins the show. Cashi is a stablecoin spending app and cashback card with a global footprint. In this episode we discuss: Customer personas and use cases for stablecoin payments The future of tokenized equities on chain The landscape of layer one and two blockchains and how these platforms converge with global stablecoin applications Cashi's roadmap and plans
Weekly Roundup 10/02/26 (Fat Model Hypothesis, Agentic bank runs, Hester Peirce retires from the SEC, ETH 2030) (EP.742)
Weekly Roundup 10/02/26 (Fat Model Hypothesis, Agentic bank runs, Hester Peirce retires from the SEC, ETH 2030) (EP.742) Oct 2, 2026 33:16 Matt and Nic are back with another week of news and deals. In this episode:  Are OpenAI and Anthropic reenacting the Fat Protocol Hypothesis Will AI agents cause bank runs optimizing bank balances for yield? If the AI complex bursts does it take down VC? Our tribute to Hester Peirce as she retires from the SEC The SEC and CFTC publish crypto FAQs Vitalik lays out his vision for Ethereum in 2030 Q
Weekly Roundup 09/25/26 (Post Clarity rulemaking, Sherrod Brown is back, RIP BitMEX, Coldcard white hats, is EA a cult?) (EP.741)
Weekly Roundup 09/25/26 (Post Clarity rulemaking, Sherrod Brown is back, RIP BitMEX, Coldcard white hats, is EA a cult?) (EP.741) Sep 25, 2026 33:29 Matt and Nic are back with another week of news and deals. In this episode:  How loud are America's largest data centers? What's wrong with XAI's data center in Mississippi? The Trump admin is reportedly trying to promote dollar stablecoins Binance invests in Circle We pick up the pieces after Clarity Fairshake plans to spend $30m opposing Sherrod Brown in Ohio How AI anxiety helps the Democrats
Weekly Roundup 09/18/26 (Clarity fails to advance, Caroline Ellison's new job, AI leaking MNPI, Poland's oil snafu) (EP.740)
Weekly Roundup 09/18/26 (Clarity fails to advance, Caroline Ellison's new job, AI leaking MNPI, Poland's oil snafu) (EP.740) Sep 18, 2026 38:51 Matt and Nic are back for another week of news and deals. In this episode:  How is SBF like Dario? The EAs are at it again Do we need new regulation to Pace the Frontier? Can Anthropic be regulated like a bank?  Are baseball cards back? Clarity fails at the final hurdle Why did Clarity fail? Stablecoin yield is still in effect The SEC and CFTC are engaging in rulemaking Circle launches Arc, their
Weekly Roundup 09/11/26 (Liquid hack, AI x-risk, Silvergate revisited, can AI leak MNPI?) (EP.739)
Weekly Roundup 09/11/26 (Liquid hack, AI x-risk, Silvergate revisited, can AI leak MNPI?) (EP.739) Sep 11, 2026 47:32 Matt and Nic are back for more deals and news. In this episode:  We bring back his the theme music Anthropic employees think there's a 10% chance AI destroys humanity Was Jacob Coxon astroturfed or real? Are Anthropic employees being sincere or cynical? Blockstream's Liquid sidechain is hacked What does the Liquid hack mean for privacy coins? Hunter Biden launches the $LAPTOP memecoin IONQ says t
Weekly Roundup 09/04/26 (HuggingFace hack breaks containment, Hyperliquid onshoring, RSA260 factored, is the stablecoin sandwich cheaper?) (EP.738)
Weekly Roundup 09/04/26 (HuggingFace hack breaks containment, Hyperliquid onshoring, RSA260 factored, is the stablecoin sandwich cheaper?) (EP.738) Sep 4, 2026 33:37 Matt and Nic are back for another week of news and deals. In this episode:  We determine the winner of the bad boys theme song competition Dwarkesh ignites controversy with his OpenAI hack recap What actually happened with OpenAI and Huggingface? Gwern's and Matt Huang's short story competition Will AI make us dumb? 200m Americans KYC data has been hacked Prediction markets lawsuit heading to SCO
Guy Young (Ethena) on Digital Financial Markets (EP.737)
Guy Young (Ethena) on Digital Financial Markets (EP.737) Sep 2, 2026 33:05 Wyatt sits down with Guy Young, founder of Ethena, for Guy's third appearance on the pod. In this episode: What has driven Ethena's success and durability? Where is there demand for other yield assets? Where is capital coming from? Is full onchain portfolio construction possible today? Why tokenize financial products at all? Who are the eventual winners? How is Ethena positioning to an evolving o
Weekly Roundup 08/28/26 (BankChain alliance, Goat grazing hedges, SHRINCS, is maximalism over?) (EP.736)
Weekly Roundup 08/28/26 (BankChain alliance, Goat grazing hedges, SHRINCS, is maximalism over?) (EP.736) Aug 28, 2026 35:40 Matt and Nic return for another week of deals and news. In this episode:  Matt and Nic consider candidates for the new bad boys intro music 39 state banking associations form the BankChain alliance Blockstream researchers proposed SHRINCS, a PQ signature scheme for Bitcoin How much should depositors care about bank credit risk? Kalshi hosts a prediction market on goat grazing regulation Are tradi
Weekly Roundup 08/21/26 (SALT Wyoming, SEC's Reg Crypto, Tether's big 4 audit, Crypto Privateers) (EP.735)
Weekly Roundup 08/21/26 (SALT Wyoming, SEC's Reg Crypto, Tether's big 4 audit, Crypto Privateers) (EP.735) Aug 21, 2026 33:14 Matt and Nic return for another week of news and deals. In this episode:  The boys review SALT Wyoming in Jackson Hole Why did Stripe buy Openrouter? Stripe says we have entered the Singularity People are upset about data centers The SEC proposes Reg Crypto governing token issuance The CFTC convenes a crypto roundtable in Washington FASB proposes treating stablecoins as cash equivalent under GAAP
Weekly Roundup 08/14/26 (Anti-Datacenter sentiment, dinosaur fossil investing, SEC is DIYing Clarity) (EP.734)
Weekly Roundup 08/14/26 (Anti-Datacenter sentiment, dinosaur fossil investing, SEC is DIYing Clarity) (EP.734) Aug 14, 2026 37:49 Matt and Nic are back for another week of news and deals. In this episode:  Who is the main character in AI? Why are people so mad about datacenters? Sherrod Brown is back and he's running against AI Are datacenters being built with Flock? Culturally scarce goods and dinosaurs are rallying The SEC starts to fill the gap left by the Clarity Act FinCEN ends beneficial ownership reporting The CFTC c
Weekly Roundup 08/07/26 (Coldcard hack continues, Ethereum mulls an issuance tweak, ai16z winds down, Clarity deadline looms) (EP.733)
Weekly Roundup 08/07/26 (Coldcard hack continues, Ethereum mulls an issuance tweak, ai16z winds down, Clarity deadline looms) (EP.733) Aug 7, 2026 38:15 Matt and Nic are back with more news and deals. In this episode:  Why the Coldcard hack is worse than some major exchange and DeFi hacks What the Coldcard hack told us about the need for open weight models Is self custody over? MSTR sells more Bitcoin An FBI agent steals $1m in crypto NY state sues Kalshi Ethereum considers another change to issuance Ethereum needs to resist the urge to change mo

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