> For the complete documentation index, see [llms.txt](https://docs.phron.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.phron.ai/developers/build-with-phronai/smart-contracts-development/rust-contracts/phron-smart-contracts-basics/extending-your-contract.md).

# Extending your contract

We’ve prepared a sample smart contract that covers basic to intermediate topics and constructs you might need for your own projects—see the [Bulletin Board example contract](https://github.com/Cardinal-Cryptography/bulletin-board-example). 

Use the `README.md` file of the contract as your starting point. 

Happy hacking!