Re: tampering withelectronic health records

[Horst Herb]

> > version of the information) is essentially read-only.
> > In that case, a digital notary can be universally applicable.
>
> Once more, it's not so easy  ;-)
>
> To take Odyssee as an example :
>
> - most documents are stored as a tree of structured datas
> - they can dinamically be *translated* in natural langage (and published
as
> HTML pages with the tree hidden in it)
>
> When you modifie the document, the system records all modifications to the
> tree nodes (delete, new, change position) done in the session (a session
is
> who and when (log in and log out))
>
> It is thus possible to rebuild the specific tree at anytime (and translate
> it) ; but it is not a read-only process.

Yes, but the underlying documents should be
"write-once/read-only-thereafter". If not, the system s unsuitable for
health records unless an audit trail is established by a different method.
In any case, the notary principle still would work: you notarize either the
underlying documents, or you notarize the audit trail file.

Horst