Do also note the namespace is required. It has to be generally like so http(s)://(namespace).TLD(/optional further namespacing)/(claimId)
I say this because I was confused myself. I tried things like pt:// (a custom scheme I use to refer to my services internally) and this did not work, and it also did not work when omitting the TLD. I ended up just using my normal production domain as the namespace and then it did work.