Igloo IOS testflight is a nostr threshold signature experiment happening in real time! nostr:nevent1qvzqqqqqqypzpqtjhys9y37al6vm0qejq7pdqvf05vz6rx0m90528ejk8cstfu8zqyt8wumn8ghj7etyv4hzumn0wd68ytnvv9hx...