feat: improve oob proofs

Description

Add a way to work with oob proofs

Related issues

Testing

• no tests

Checklist

• I have updated the documentation (if necessary)
• I have added unit tests for new functionality (if applicable)
• My code follows the style guidelines of this project
• I have tested this code on my local machine before submitting this MR

Reviewers

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Additional Notes

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Closes #34 (closed)