Spiral is adding Bitcoin payments to Mesh LLM so machines can buy AI compute

How the Payment Layer Works

Mesh LLM is a decentralized network that pools idle GPU power from its users. The combined hardware runs open-source AI models collaboratively. The payment feature is built on top of the Lightning Network, a layer built on top of Bitcoin for small, fast transactions. GPU contributors would get paid for the compute they lend to the network, and AI agents would be able to pay for inference directly, without an intermediary sitting between buyer and seller.

Challenges and Progress

The payment integration is still under active development, but the team has discussed its progress and highlighted challenges around verifiable compute. If a stranger's GPU is used to run a model, how do you know it actually did the work? On October 3, 2026, the team publicly discussed its ongoing progress on Mesh LLM payments and flagged challenges around verifiable compute.

Background and Context

Spiral was initiated by Block in 2019 to fund and build open-source Bitcoin development. The Lightning Development Kit gives developers building blocks for adding Lightning payments to their own apps. The Mesh LLM payment work builds directly on that existing foundation. Spiral has also moved into AI infrastructure through the Goose Development Kit, known as GDK, and through Agent Communication Protocol standards.

Implications and Future Directions

The integration of Bitcoin payments into Mesh LLM has significant implications for AI agents, GPU owners, and Bitcoin. Coverage of the work has stayed mostly inside Bitcoin-focused and developer communities. There are no adoption numbers, transaction volumes, or usage metrics to point to yet. The verifiable compute problem is the single biggest thing to monitor. A payment system for anonymous GPU providers only works if buyers can trust they received what they paid for, and the team has openly said this is a challenge. Other signals worth following include whether x402 ends up powering the micropayment flow and how Spiral ties Mesh LLM into its GDK and Agent Communication Protocol work.