Austin

Results 3 issues of Austin

`Signature::isValid()` references a 'Timestamp' class that does not exist in this project.

I don't know enough about these files to determine whether or not this is a false-positive, so wanted to report this just in case. ![image](https://github.com/user-attachments/assets/97f9bc4c-430f-4950-aa08-a4faf85d7712)