nostr:nprofile1qqsfqg870ptm6guj65zta6u726rhdag80p8mtddfftmmtmc6a9uq9zgpr9mhxue69uhhyetvv9ujuumwdae8gtnnda3kjctv9uq3vamnwvaz7tm9v3jkutnwdaehgu3wd3skuep0qyghwumn8ghj7mn0wd68ytnhd9hx2tcs7gmtd rockin' a talk about how to secure your bitcoin at the meetup in Arnhem Bitcoin City 
