To what extent could this be implemented as an addition to the internet archive?
It might be advantageous to do so for content that is in the internet archive. For content that is not, especially non-public content, it might be more feasible to offer the solution as a public service + open source software.
It might be advantageous to do so for content that is in the internet archive. For content that is not, especially non-public content, it might be more feasible to offer the solution as a public service + open source software.