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Due to several,
mainly economic, reasons it can be assumed that the assignment of
guarantees of existence needs to be subjected to restrictions. Let us
look at the following restrictions:
- duration for
which a guarantee can be set
- disk space
The process of
deciding on limits is reasonably divided into two steps: First, the
system operators need to specify how long and to which extent they
can and should provide the technical infrastructure for publishing
content. Only then can users be provided with guaranteed assets.
Afterwards, users are able to set or extend guarantees of existence
within the scope of their assets for their own data as well as for
external documents, provided their authors have permitted to do so.
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