> For the complete documentation index, see [llms.txt](https://goldpesa-1.gitbook.io/goldpesa/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://goldpesa-1.gitbook.io/goldpesa/goldpesa-vs-goldpesa-option/immutable.md).

# Immutable

Both GPO and GPX are **100% immutable**, meaning:

* **No one, not even GoldPesa, can change the contract rules.**
* **No upgrades, no modifications, no alterations, ever.**
* **Security and trustlessness**, ensuring the contract executes exactly as coded. 

This immutability guarantees **permanent and decentralized** financial operations.