Solving the $30 trillion Liquidity Silo Problem w/ Ethan Marcus

Solving the $30 trillion Liquidity Silo Problem w/ Ethan Marcus

From The Gwart Show | Blockspace Media by Blockspace Media

June 14, 2026 · 49 min

About this episode

Ethan Marcus discusses Flashnet's approach to creating a global liquidity pool for Bitcoin and the limitations of the Lightning Network.

Ethan Marcus, CEO of Flashnet joins us to talk about how Flashnet is building a global pool of liquidity for Bitcoin. Ethan explains why the Lightning Network falls short for multi-asset scaling and how Spark's state-chain architecture enables instant, zero-fee swaps. We dive into Flashnet’s B2B integrations with neobanks and merchant platforms, the trend toward on-chain retail execution, and their upcoming expansion into liquidations and Bitcoin-denominated financial services. Subscribe to the newsletter! [https://newsletter.blockspacemedia.com](https://newsletter.blockspacemedia.com) Notes: * Bitcoin trades over $30 trillion annually.* System requires one honest operator.* Much of Cash App's revenue is Bitcoin-based. Timestamps: 00:00 Start 00:49 Ethan's background 03:09 Spark 04:15 State chains 05:12 Spark design 07:22 State chain unlocks 09:07 Flashnet design 10:26 B2B clients 12:03 Comparing Spark vs other L2 13:42 What form does USD take? 15:08 Self custody 20:05 The problems that Spark solves 21:42 Spark ecosystem 24:03 Solana is so good! 26:41 Stablecoins 29:25 Assets other than BTC 33:16 Swaps landscape 36:57 Other Flashnet opportunities 41:33 Spark update 44:01 Roxom…

People in this episode

Guest: Ethan Marcus

Topics covered

Keywords

Sponsors

Ellipsis Labs

Mentioned in this episode

Organizations: Flashnet, Cash App

Products: Lightning Network, Spark, state-chain architecture, stablecoins

Places: Bitcoin, Solana

More episodes of The Gwart Show | Blockspace Media

Explore listener stats, chart rankings, contacts and more on the The Gwart Show | Blockspace Media podcast page.