The German speaking community is highly decentralized however a common branding is "Einundzwanzig" ("Twentyone").
They developed this Nostr based app
https://zapstore.dev/apps/space.einundzwanzig.meetup
which helps to find and organize a local meetup.
Among other things it solves one particuar problem: In person P2P Bitcoin trades at a meetup. You build a reputation by visiting meetups and get cryptographic proof by others therefore generating a web of trust.
So it helps the community converging meetspace and cyberspace.
PS: The branding originated off the Einundzwanzig (nprofile…h6g6) podcast initially by markusturm (nprofile…4a59) and Gigi (nprofile…9ccm) .
PS2: The community map:
https://einundzwanzig.space/meetups/
21dus
npub1du…llq5k
2026-08-27 13:21:00 UTC
in reply to nevent1q…e3kg
Author Public Key
npub1dus2ljc6fn5dt6psatnsce7uckzgdvl3q3s73u00vedl87vnclwqdllq5kSeen on
wss://nostr.oxtr.devPublished at
2026-08-27 13:21:00 UTCEvent JSON
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"content": "The German speaking community is highly decentralized however a common branding is \"Einundzwanzig\" (\"Twentyone\").\n\nThey developed this Nostr based app\n\nhttps://zapstore.dev/apps/space.einundzwanzig.meetup\n\nwhich helps to find and organize a local meetup.\n\nAmong other things it solves one particuar problem: In person P2P Bitcoin trades at a meetup. You build a reputation by visiting meetups and get cryptographic proof by others therefore generating a web of trust.\n\nSo it helps the community converging meetspace and cyberspace.\n\n\nPS: The branding originated off the nostr:nprofile1qqsqx84rqcvglmnrr2r0rg8ynnhg70tzty4ju7l9lr430z8ryldngzspzamhxue69uhhyetvv9ujuurjd9kkzmpwdejhgtcpzdmhxue69uhhqatjwpkx2urpvuhx2ue0qy88wumn8ghj7mn0wvhxcmmv9udah6g6 podcast initially by nostr:nprofile1qqs0ys979d5ylpwvs9tx7gyp8p40s8t5yl4gvfgv300xk759qrrkrwsppemhxue69uhkummn9ekx7mp0qythwumn8ghj7mmjv9hxwetsd9kxcetj9ehhyee0qyvhwumn8ghj7urjv4kkjatd9ec8y6tdv9kzumn9wshszv4a59 and nostr:nprofile1qqsxu35yyt0mwjjh8pcz4zprhxegz69t4wr9t74vk6zne58wzh0waycpz9mhxue69uhkummnw3ezuamfdejj7qgewaehxw309ac8yetdd96k6tnswf5k6ctv9ehx2ap0qy2hwumn8ghj7mn0wd68ytn00p68ytnyv4mz7xx9ccm .\n\nPS2: The community map:\nhttps://einundzwanzig.space/meetups/\n",
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