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 47:09 Flashnet & retail

The Gwart Show is sponsored by Ellipsis Labs. Ellipsis Labs builds the most efficient on-chain markets. Their orderbook and Prop AMM products have delivered price improvement to hundreds of billions of dollars in retail volume. Now, they are bringing their expertise to build Phoenix, the best on-chain perpetuals platform. Ellipsis Labs is hiring New York-based engineers. If you're an engineer looking to work with a proven team in making DeFi better, go to ellipsislabs.xyz/careers

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