Thanks for the responses!
Unfortunately I probably don’t know enough about APIs and backends and whatnot to offer really useful implementation suggestions.
I think the way I was envisioning it in my mind was, when entering a spin, if I could provide a Discogs release ID, it might trigger a “Did you mean…” including only the tracks on that unique release’s page and I could select (“correct”) from there. Or I could provide a release ID, hit the magnifying glass icon and get the same slate of choices. Am I describing this in a way that makes sense?