> For the complete documentation index, see [llms.txt](https://docs.propellerheads.xyz/tycho/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.propellerheads.xyz/tycho/about/transparency.md).

# Transparency

Tycho funding and governance.

### Tycho's source is public

Tycho's source code is public on [GitHub](https://github.com/propeller-heads/tycho). You can inspect, run, and modify it.

* **Tycho releases before 0.435.0:** we released these versions under the MIT License, and they stay under it.
* **Tycho 0.435.0 and later:** we release these versions under the [Fynd License 1.1](https://github.com/propeller-heads/tycho/blob/main/LICENSE.md). Settlements that use Tycho must execute through the [Designated Router](/tycho/for-solvers/execution/contract-addresses.md). Revenue you earn from settlements or services that use Tycho, including solver rewards, carries a 20% revenue share. Using Tycho internally, offering it for free, or trading with your own capital does not by itself trigger a revenue share.

[LICENSING.md](https://github.com/propeller-heads/tycho/blob/main/LICENSING.md) lists which license covers which files. For a custom license, contact <legal@propellerheads.xyz>.

**Free hosted indexer**: Today, we host a free indexer for each chain, and we aim to maintain this indefinitely. If this ever changes, you will know at least 3 months ahead of time and have enough time to host your own indexer.

### Indexer Redundancy

We are working with independent third parties to host additional indexers, both free and paid – to add redundancy to our indexer.

### Tycho's Financial Model

Tycho finances development and maintenance through:

* **Grants:** Tycho receives grants from chains, DEXs, and others that benefit from the flow that Tycho brings.
* **Tools built on Tycho**: Useful tooling built on Tycho with a fee model (Coming soon).