What exactly is this Ditto thing that even nostr:nprofile1qqsgydql3q4ka27d9wnlrmus4tvkrnc8ftc4h8h5fgyln54gl0a7dgspzemhxue69uhhyetvv9ujuurjd9kkzmpwdejhgqg5waehxw309aex2mrp0yhxgctdw4eju6t0qy2hwumn8ghj7un9d3shjtnddaehgu3wwp6kyfehcpn is raving about? Is it a client? Some kinda server? #asknostr nostr:nevent1qqs0uchvqkjv0lflnfrfdp3m2e9qcqgmtedgrkmfvmtcypw6h05l63gppemhxue69uhkummn9ekx7mp0qgsgydql3q4ka27d9wnlrmus4tvkrnc8ftc4h8h5fgyln54gl0a7dgsrqsqqqqqptpzdzf