How to Build Stablecoins on Bitcoin with Spark L2

In this Stabledash Live session, Christian Catalini, Co-founder of LightSpark and former Libra founding team member, reveals how Spark is making stablecoins on Bitcoin a reality—and why it matters for the future of global payments.

With Brale's recent launch of USDB as the first fiat-backed stablecoin on Spark, we're witnessing a fundamental shift in how Bitcoin can serve as neutral infrastructure for digital dollars.

Key insights from this conversation:

- Why LightSpark believes "whatever the future of money will be, it will be built on Bitcoin"
- How Spark solves Bitcoin's historical limitations to enable instant, near-zero cost transactions
- The power of combining Bitcoin's $1.5T liquidity with stablecoin functionality
- Why 15% of Coinbase's Bitcoin transactions already run on LightSpark's infrastructure
- The risks of proprietary stablecoin chains (Circle's Arc, Stripe's rumored Tempo) creating new walled gardens
- How non-custodial wallets can now hold both Bitcoin and stablecoins with unilateral exit rights
- The Bitcoin rewards revolution: why stablecoin yields in BTC changes everything
- Real implementations: Magic Eden, Tether wallet SDK, and the StableChange ecosystem

Christian shares critical lessons from building Libra at Facebook for four years, why that project failed, and how those insights shaped LightSpark's approach to building truly open financial infrastructure.

Whether you're a builder exploring Bitcoin's potential, a stablecoin issuer looking for neutral rails, or someone interested in the future of decentralized finance, this conversation provides essential insights into why Bitcoin might be the only truly neutral ground for global payments.

Follow LightSpark: @lightspark
Follow Christian Catalini: @ccatalini
Learn more: lightspark.com

About Spark:
Spark is LightSpark's Bitcoin Layer 2 solution that enables instant, low-cost transactions while maintaining Bitcoin's security guarantees. With support for tokens and stablecoins, Spark is positioning Bitcoin as the neutral, open infrastructure for the next generation of global payments.

Download the full report: https://www.dynamic.xyz/2025-stablecoin-playbook