This thread will be of interest to those asking about “firsts” for specific places: https://forum.inaturalist.org/t/show-me-what-new-taxa-i-have-contributed/3677/7 It includes info on how you can see who was first to post a given species in a given area, though not which obs was the first identified as that species in that area. Basically, you can search “Places” (including by taxon, if desired), then mouse over a species to see who added it first. However, I don’t think there’s a way to show “first to iNat” there–just first in North America or Eurasia, etc.
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