It's different for every client, but on nostr:nprofile1qyx8wumn8ghj7cnjvghxjmcpz4mhxue69uhk2er9dchxummnw3ezumrpdejqzrthwden5te0dehhxtnvdakqz8nhwden5te0dehhxarj94c82c3wwajkcmr0wfjx2u3wdejhgtcpr4mhxue69uhkummnw3ezucnfw33k76twv4ezuum0vd5kzmp0qyf8wumn8ghj7mmxve3ksctfdch8qatzqythwumn8ghj7un9d3shjtnrw4e8yetwwshxv7tfqyt8wumn8ghj7un9d3shjtnwdaehgu3wvfskueqpzemhxue69uhhyetvv9ujuurjd9kkzmpwdejhgqgcwaehxw309aex2mrp0yh8xmn0wf6zuum0vd5kzmqqypfjmqcdllsfcyl8t693ghyz2uv0cy4sqqlkr4s7jpmhy8rll7fuk34pfty you're already both. 🤙

Check marks usually indicate a user has some kind of NIP-05 which is just a technical term used that some web site reports that your user matches their backend.

The #OG is a nostr:nprofile1qqs9xtvrphl7p8qnua0gk9zusft33lqjkqqr7cwkr6g8wusu0lle8jcpp3mhxue69uhkyunz9e5k7qg4waehxw309ajkgetw9ehx7um5wghxcctwvsqs6amnwvaz7tmwdaejumr0ds2g5zx8 badge based on their Primal subscription.