The prefix in the compositeId for an asset specifies its assetProvider, therefore the prefix should match the actual name of its assetProvider. This will create a sensible standard that any developer would understand and expect.
To be explicit, componsiteId's should change from:
"dam:4783947392473974832748378493"
to
"jcr:4783947392473974832748378493".

Required changes:
bootstrap files
code
comments.

Recommendation to ticket implementor: file search on lowercase "jcr" 'jcr' or jcr.