Is it possible to share the spatial anchor via location api?

Hi
I’m developing a running application that renders a previous user running course like as racing game ghost.
To resolve this, I need to share spatial anchor to define the start position created by previous users.
As far as I confirm some samples of shared spatial anchor, spatial anchor can be shared via Networking engine such as Photon.
Is it possible to share the spatial anchor when current users enter specific point that previous user begin to run.
That means, previous users upload their spatial anchor to AWS S3, and current users download the e spatial anchor from this.