Behind the Stream: LIL Is Quietly Building Onchain Banking
Summary
• Jack Marsh launched LIL Bits while livestreaming himself building a stablecoin-native neobank.
• The dev is CTO of Liminal Cash, a neobank backed by Oxford’s seed fund, Entrepreneurs First, and Gnosis, building cross-border payments and savings accounts.
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On August 20, a developer called Jack Marsh began livestreaming while building a stablecoin-powered neobank called Liminal Cash. The stream showed him writing code for cross-border transfers and a savings account, including a workaround for a Privy/AWS outage. He described the project as “a neobank that runs on stablecoin rails,” but didn’t reveal much branding or context at the time.
Initially, many viewers thought LIL Bits was a solo dev experiment with no clear connection to fintech. A tweet noted that “99–100% of people watching didn’t understand” what he was building, and the lack of branding made it hard to connect the project to any serious roadmap.
After the livestream, user @7spyzer DMed the dev asking about branding. The dev replied, “We got that covered already, it’s just a WIP,” and clarified that the team had six people.
His X bio confirmed he’s the CTO of Liminal Cash - explaining the LIL ticker. The project’s website and X account revealed further details: Liminal is backed by Oxford University’s seed fund, Entrepreneurs First, Gnosis, and others. One co-founder retweeted the dev’s post-stream message:
Jack Marsh reposted a thread showing how stablecoin-based neobanks like Liminal could change banking. Instead of holding deposits like old banks, they use on-chain money and scale faster.
Another tweet emphasized the larger vision:
On November 11, Jack Marsh revealed in a tweet that he had submitted Liminal to the Y Combinator Winter 2026 batch, sparking renewed excitement around the project.
LIL reached a $2.4M ATH on October 29.
