I think you're missing the point.
With the IndieWeb version of POSSE, the source of truth is the webpage you control.
For the ATProto version of POSSE, the source of truth is the record in your PDS. That record is interesting because it is both content-addressed and signed with your private key.
Where ever that record is syndicated, the reader (or app displaying the content) should be able to demonstrably verify the authenticity of the record.
And you can host your own PDS entirely independent of Bluesky, there are several interfaces for both reading and publishing Standard.site records:
* Leaflet (https://leaflet.pub/ )
* pckt (https://pckt.blog/ )
* Wordpress (https://github.com/pfefferle/wordpress-atproto )
It's also not that hard to write your own display interface for just your data if you want.
With the IndieWeb version of POSSE, the source of truth is the webpage you control.
For the ATProto version of POSSE, the source of truth is the record in your PDS. That record is interesting because it is both content-addressed and signed with your private key.
Where ever that record is syndicated, the reader (or app displaying the content) should be able to demonstrably verify the authenticity of the record.
And you can host your own PDS entirely independent of Bluesky, there are several interfaces for both reading and publishing Standard.site records:
* Leaflet (https://leaflet.pub/ )
* pckt (https://pckt.blog/ )
* Wordpress (https://github.com/pfefferle/wordpress-atproto )
It's also not that hard to write your own display interface for just your data if you want.