# Yona Architecture

### Architecture

Yona Network is Bitcoin's fastest Layer 2, powered by the Solana Virtual Machine (SVM). Yona Network utilizes modular architecture, combiningthe best pieces of the stack:

* **Settlement: Bitcoin** - Yona settles to Bitcoin and uses BTC as its gas token.
* **Execution: Solana Virtual Machine (SVM)** - Yona runs the highly performant SVM as its execution environment.
* **Data Availability** - Yona Network posts its data to DA for scalable data availability (DA).
* **Proving: RISC Zero** - Yona uses RISC Zero to implement ZK Bitcoin Light client and verify ZKPs for the light node proofs.

### Components

There are three classes of actors in the Yona rollup architecture: 

1. Execution nodes.
2. Historical nodes.
3. Bridge nodes (information about this type of node - in the section ‘Yona BTC Canonical Bridge).
4. Prover nodes.
5. Spreading module.
6. Proofs aggregation and comparison module.

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