You may be interested in this feature request.
https://forum.inaturalist.org/t/duplicate-prevention-notify-observers-if-their-image-checksums-match-others-on-the-site/258
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You may be interested in this feature request.
https://forum.inaturalist.org/t/duplicate-prevention-notify-observers-if-their-image-checksums-match-others-on-the-site/258