Electronic signatures don't have this property.
Cryptographic signatures don't provide evidence that someone looked at the "document" in transit. For that we use a separate sort of thing called encryption and prevent the problem entirely. The two things work together to provide the equivalent of a sealed envelope or securely folded paper document.
In Japan, Hanko or Inkan:
https://en.wikipedia.org/wiki/Seal_(East_Asia)#Japanese_usag...
Well, the European usage is to call them seals in a European or Near Eastern context. For some reason, exactly the same thing in an Asian context is often called a "chop" in European usage.