Please be more specific.
What do you mean by "my documents"?
Word files? Pdf files? Images? All the above? other?
What do you mean by edited?
Someone sits at your PC and edits them without you knowing? If documents were edited before or after they come to you?
What do you mean original?
That the file is not a copy? That the file hasn't been edited (look above)? that no other copy exists?
and finally, Photocopied?...
I assume you mean... printed or screenshotted? cause I doubt you mean this
Some of the above have ways of happening, like digital signing, encryption with password, DRM (block print, editing, etc) and can be also bypassed If not implemented right.
No matter what tho, till you can be more specific, we cant help you. State what type of documents you mean, what software you are using and what you want to do, and how many others are involved.