> For the complete documentation index, see [llms.txt](https://docs.tetreum.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.tetreum.com/network/architecture/node-roles.md).

# Node Roles

The whitepaper outlines three primary roles in the Tetreum node architecture.

## Validator nodes

Validator nodes participate in block proposal and signing. Validators are selected based on identity and reliability and are expected to meet governance and uptime standards.

## Full nodes

Full nodes maintain the complete blockchain state and verify all blocks and transactions. They support explorers, developers, and applications that need complete network data.

## Light clients

Light clients are designed for mobile and browser-based applications. They maintain a lighter subset of the chain and rely on trusted checkpoints for faster interaction.

This separation of roles is intended to distribute responsibility while preserving fast confirmation times and high throughput.