# Formal Verification

The formal verification of Block Keeper smart contracts was performed by the [Pruvendo Team](https://pruvendo.com/).

[Learn what formal verification is and  find out about  Pruvendo's formal verification approach.](https://drive.google.com/file/d/1xcZ5-1uLzTSMFbfHiq-4onhfwSoUWNZ2/view?usp=sharing)<br>

On the following pages, you will find:

* BLS - [Business Level Specification](https://docs.ackinacki.com/protocol-participation/block-keeper/formal-verification/block-keeper-contracts-business-level-specification),&#x20;
* HLS - [High Level Specification](https://docs.ackinacki.com/protocol-participation/block-keeper/formal-verification/block-keeper-contracts-high-level-specification),&#x20;
* LLS - Low Level Specification of Block Keeper contracts.


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