nostr:npub1exv22uulqnmlluszc4yk92jhs2e5ajcs6mu3t00a6avzjcalj9csm7d828 is on Nostr as well since a while. I have opened a Nostr group on SimpleX some time ago to find Nostr contacts:

https://simplex.chat/contact#/?v=1-2&smp=smp%3A%2F%2FOs49bI1lH4wBcwcuC7tCxXYjorknrnj9eGj9V1Jh2xk%3D%40simplex.mnethome.de%2FBrqbCyTuJkqC1m9gHmROiDLZwXoEICrw%23%2F%3Fv%3D1-2%26dh%3DMCowBQYDK2VuAyEAyrvZCtfwqYAN6VBW-8CMVIJeYzumBYGlSqy3AnUz4Bw%253D&data=%7B%22type%22%3A%22group%22%2C%22groupLinkId%22%3A%22tcpVt6YOY1erE4OGqt2GLg%3D%3D%22%7D