maybe restricted relay connections, so that it's within an ecosystem of company relays, but it's infra backbone is nostr protocol

nostr:nevent1qvzqqqqqqypzpn0vcvwxm9qxaxnadvqxwsf25esan5cusq6u8lt9cp3sr5w2cwujqythwumn8ghj7un9d3shjtnwdaehgu3wvfskuep0qy2hwumn8ghj7un9d3shjtnyv9kh2uewd9hj7qpq6gljcemevk4d3c2tspzy902ty4sfczcylyl3dwd3p3xh95l3teqqsvd7am