> Which brings me to my favorite possible RPKI-IRR integration: a ROA that says that IRR objects on IRR source x with maintainer Y are authoritative for a given number resource. Kinda like SPF for BGP.
>

Is this required? or a crutch for use until a network can publish all
of their routing data in the RPKI?

It provides an adoption path based on the information already published in IRRs by operators for some years. It also covers for the fact that RPKI currently is only origin-validation.

Rubens