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# V0

Welcome to the Constant Finance V0 documentation. This guide introduces the protocol's fixed-rate lending model and the V0 deployment currently available on Ethereum Sepolia.

Constant Finance brings borrowers and suppliers together through signed Orders. Once compatible terms are matched, the protocol opens an isolated Position for the borrower and issues Constant NFTs that represent supplier claims.

Use the three sections below to explore the protocol:

* [Overview](/docs/v0/overview.md) introduces the model, the participants, and the language used throughout this guide.
* [Concepts](/docs/v0/concepts.md) follows a loan from Orders and matching through repayment, refinance, and liquidation.
* [Deployment](/docs/v0/deployment.md) records the current Sepolia contracts, supported assets, and risk configuration.

This documentation covers capabilities that are deployed, connected, and usable through the V0 stack. A feature is not presented as available simply because related code exists.


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