How to programmaticly query WayBack Imagery Layer changes for an extent?

[TimBranscomb]

Is there a public service (REST, etc.) that would allow users to programmatically query (from ArcGIS Runtime in my case) a service that would only return a list of Wayback Imagery Layers that had changes for a given extent?   I am looking for something that would allow functionality similar to the 'Only updates with local changes' checkbox found in the World Imagery Wayback app here: https://livingatlas.arcgis.com/wayback/ 

[RobertWaterman · Accepted solution]

We do not have an API or service.  However, the code for the Wayback app can be found here:  https://github.com/vannizhang/wayback.  The specific function called for producing the "local changes" you noted is here:  https://github.com/vannizhang/wayback/blob/master/src/index.js#L1272.

Hope this helps!