That's a reasonable assumption, but the website Trudge linked to in this thread has a timeline of SAND's history that starts in 2017 and ends in 2019 (although the "research" section of the website has links to, like, seminars and shit they've done since and they've maintained a presence on Twitter since 2022, so it's likely they just haven't updated the timeline).
there could be a korean name with a longer history...
That's a reasonable assumption, but the website Trudge linked to in this thread has a timeline of SAND's history that starts in 2017 and ends in 2019 (although the "research" section of the website has links to, like, seminars and shit they've done since and they've maintained a presence on Twitter since 2022, so it's likely they just haven't updated the timeline).