No ...
I don't think it's the same site. At the bottom of certified.privnote.com it says "Certified Privnote is an EuroPriSe certified version of Privnote" with a link to privnote.com (sans the certified).
It is the SAME site. And for people that do not understand Privnote...read here before you past anymore paranoid opinions and not facts.
For completeness, this is what happens when you view a note in Privnote:
1.The server extracts the NoteID from the URL
2.The server hashes the NoteID and gets the HashedNoteID. This is the same HashedNoteID used when generating the note, since the NoteID used to make the hash is the same in both cases
The server retrieves the note from the database using HashedNoteID as the database primary key and decrypts its contents using NoteID as the encryption key
3.The server shows the page with the decrypted note
4.The server permanently deletes the note from the database, keeping only a record of the HashedNoteID, the time when it was read, and the IP address where it was read from, to show it when someone tries to see the note again
If someone with access to the database would like to read the note she would be unable because she doesn't have the key to decrypt it (NoteID), only the database primary key (HashedNoteID). The HashedNoteID cannot be used to "go back" to the NoteID because hashes are "one-way". So the only person who can actually decrypt (and thus see) the note is the one who has the original NoteID or, in other words, the one who has the link to the note.
These are facts people.