I started to hear about it in april 2022. I tested nostro.rocks for the first time on april 16th (I know because I have a privkey that I stored on that date), but it was very archaic back then.
Then, a few days later, I listened about it in Citadel Dispatch, where #[2] interviewed #[3] , #[4] and @MrKukks. https://fountain.fm/episode/7879671575
Finally, it started to hit hard again when you and #[5] created the group in october and started to play with it 😅: