DaSCH now supports an accepted, widely used standard for persistent identifiers. It uses the ARK framework. The prefix 72163 has been assigned to the DaSCH. A persistent identifier looks like this:

http://ark.dasch.swiss/ark:/72163/0801-3b7598ebb7b-b.2017115

As a peculiarity ARK allows modifiers to select specific versions of a resource. We use the creation date of the persistent link as timestamp modifier. All data already hosted by DaSCH will receive a persistent identifier in the coming weeks.