I think that could totally be possible for your hosted offering, but my point is largely that I don’t see how the self-hosted offering could ever get there, unless there was some technical measure that could prevent the operator of the system from tampering with the logs/database/etc

Edited to add: mild disclosure, I’m working on a product that has e-sign as a feature. It’s not really the main thrust of the application, but probably worth mentioning here.