> For the complete documentation index, see [llms.txt](https://docs.libre.org/libre-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.libre.org/libre-docs/advanced-features/technical-details.md).

# Technical Details

- [Core Constants](https://docs.libre.org/libre-docs/advanced-features/technical-details/libre-core-constants.md): These constants are hard-coded in the smart contract.
- [Smart Contract Versions](https://docs.libre.org/libre-docs/advanced-features/technical-details/deployed-smart-contract-versions.md): Tracks commits and sha hashes of deployed smart contracts on mainnet and testnet.
- [Verifying Code Updates](https://docs.libre.org/libre-docs/advanced-features/technical-details/verifying-code-updates.md): How to verify code updates of smart contracts deployed on Libre.