40 - Network State Conference 2025 - Sean Neville of Circle and Catena on USDC

Summary

Sean Neville discussed Circle’s evolution from a broad ambition to decentralize global finance into building the stablecoin infrastructure needed to support global payments. He also outlined his thesis for Catena: stablecoins could enable reliable payments between AI agents and other machine-run workflows.

Business strategy and execution

Circle’s founding and product insight

• Neville and Jeremy started Circle in 2013, aiming to democratize and decentralize global finance.
• In 2017, they recognized that a stablecoin was a necessary building block for the products and use cases they wanted to pursue.
• The core product requirement was a stable digital representation of value that could move across borders over internet infrastructure at low cost.

Build for interoperability

• Circle’s approach was to support multiple blockchains, rather than commit to one chain.
• Stablecoins were framed as foundational infrastructure for additional payment and financial use cases, not just as a currency.

Catena’s product thesis: payments for machine workflows

• AI-agent workflows may make decisions and act as economic participants, creating a need for them to transact reliably.
• Neville argued that adding AI to conventional card-payment flows can make an already multi-party process more complex and less reliable.
• By contrast, stablecoin transactions can be initiated with cryptographically signed messages, potentially enabling small fractional payments and real-time streaming payments.
• His thesis is that agents will increasingly manage money and assets—and may be the only actors capable of generating competitive returns. This was presented as a forward-looking belief, not a measured result.

Frameworks, processes, and recommendations

• Use foundational infrastructure to unlock use cases: First establish stable, internet-native value transfer; then build other products and workflows on top.
• Avoid technology lock-in: Support multiple chains rather than treating one blockchain as the sole platform.
• Design payments around the participants: Machine-run workflows may need a different payment architecture from human-centered card systems.
• Use software to enforce trust: Neville favors personalization, transparency, and cryptographic mechanisms that reduce reliance on intermediaries or individual human trust.
• Keep the next internet broadly distributed: He warned that the web concentrated identity and control among a small number of companies, and argued that agentic interfaces should avoid repeating that pattern.

Markets and organizational context

Neville described a potential “machine economy” emerging from the combination of stablecoins and AI agents. He said interest in stablecoin applications has increased, while characterizing some of the broader crypto-and-AI discussion as overhyped.

He also suggested that online communities and societies increasingly shape people’s lives, with a possible next step being to create physical communities that reflect the places where people already spend time online.

Metrics and timelines

• Circle founded: 2013.
• Stablecoin identified as a key building block: 2017.
• No revenue, growth, customer, margin, or other operating KPIs were cited.

Presenters and sources: Sean Neville, cofounder of Circle and builder of Catena; Balaji Srinivasan, interviewer. Source: Network State Conference 2025.