Robinhood Opens Ethereum Layer 2 Testnet, Backs Public Blockchains

Robinhood Opens Testnet for Arbitrum-Based Ethereum Layer 2 – Crypto Head Argues Public Blockchains Meet Institutional Needs

Key Takeaways

• Robinhood is opening the testnet for its Arbitrum-based Ethereum Layer 2.
• The initiative was discussed by Johann Kerbrat, Robinhood’s Head of Crypto, in an interview with The Defiant.
• Kerbrat stated that institutions can achieve privacy and compliance guarantees on public blockchains such as Ethereum.
• He argued that building on private blockchains does not make sense, describing them as a “fancy database.”

Robinhood Opens Testnet for Arbitrum-Based Ethereum Layer 2

Robinhood is opening the testnet for its Arbitrum-based Ethereum Layer 2, marking a new step in the company’s blockchain development strategy. The move was discussed by Johann Kerbrat, the company’s Head of Crypto, in a podcast interview published by The Defiant on February 11, 2026.

According to the interview, the Layer 2 network is built on Arbitrum and designed to operate within the Ethereum ecosystem. By launching a testnet, Robinhood is making a pre-release version of the network available for testing before broader deployment. Testnets are commonly used in blockchain development to evaluate functionality, stability, and performance under real-world conditions without affecting live assets.

The announcement signals that Robinhood is pursuing its blockchain infrastructure strategy within the public Ethereum environment rather than developing a closed or proprietary system.

Strategic Choice: Building on Ethereum Instead of Private Chains

During the interview, Kerbrat explained the reasoning behind building on Ethereum and public blockchain infrastructure rather than opting for private chains. He stated that institutions can obtain the privacy and compliance guarantees they require on public chains such as Ethereum.

Kerbrat rejected the idea that private blockchains are necessary for institutional participation. In his view, building on private chains does not make sense because they function as little more than a “fancy database.” This characterization underscores Robinhood’s position that the core advantages of blockchain technology are best realized on public networks.

By emphasizing Ethereum as the foundation for its Layer 2 initiative, Robinhood aligns its development efforts with a widely used public blockchain rather than creating a segregated environment for selected participants.

Institutional Privacy and Compliance on Public Blockchains

A central theme of Kerbrat’s remarks was the compatibility between public blockchains and institutional requirements. He stated that privacy and compliance guarantees can be achieved within public blockchain systems.

This position addresses a longstanding debate in the digital asset sector over whether financial institutions require private or permissioned networks to meet regulatory and operational standards. According to Kerbrat, public chains such as Ethereum are capable of supporting these needs without sacrificing the transparency and openness that define them.

The argument implies that public blockchain infrastructure can serve both retail and institutional users simultaneously. Rather than separating use cases into different technological environments, Robinhood’s approach appears to rely on shared infrastructure.

Implications for Public Blockchain Adoption

Robinhood’s decision to open a testnet for an Arbitrum-based Ethereum Layer 2 reflects a commitment to public blockchain ecosystems. By choosing this route, the company positions its crypto infrastructure within an open network rather than behind closed systems.

Kerbrat’s comments suggest that the company sees long-term advantages in public blockchain architecture. His statement that private chains resemble a database indicates that Robinhood does not view them as offering the same structural benefits as public networks.

For market participants, the development highlights how major fintech firms are approaching blockchain integration. Instead of building isolated systems, Robinhood is testing infrastructure that connects directly to Ethereum through a Layer 2 framework.

Context of the Announcement

The discussion took place in an episode of The Defiant podcast hosted by Camila Russo. The interview focused on Robinhood’s strategic move to build on Ethereum and the broader reasoning behind the company’s blockchain choices.

While the company has not detailed specific timelines or technical parameters in the provided material, the opening of a testnet indicates an active development phase. Testnets typically allow developers and users to experiment with network functionality prior to any full production release.

The article accompanying the interview notes that The Defiant stores its articles on Filecoin, underscoring the broader context in which decentralized storage and blockchain infrastructure continue to intersect with media and fintech initiatives.

Our Assessment

Robinhood has opened the testnet for its Arbitrum-based Ethereum Layer 2 and publicly outlined its rationale for building on a public blockchain. According to Johann Kerbrat, institutions can achieve privacy and compliance guarantees on Ethereum, removing the need for private chains. He described private blockchains as a “fancy database,” reinforcing the company’s preference for public infrastructure. The development reflects a clear strategic choice to integrate within the Ethereum ecosystem rather than deploy a separate, closed network.