nostr:nprofile1qy2hwumn8ghj7un9d3shjtnddaehgu3wwp6kyqpqg80pwudqxx9rmxu6l8l35rpu0wgxse72d4896se44zlevzcaxfps92fyum nostr:nprofile1qy2hwumn8ghj7un9d3shjtnddaehgu3wwp6kyqpqlzeg5tfepl9jz2ctmnw3dvf3vk0e3lq2vtfry4nwqz3lkc25ms7qqu0zny

Depends on the server software. Mastodon lets you point one account to the other, and your followers migrate to the new server.

GoToSocial now supports the same feature. I can't speak to the others.