E-mail:  konosuke@furuhata.jp
PGP:     CCDA 5809 0761 0372
Keybase: keybase.io/konosuke
Nostr:   npub1k0n0skr0ma4ehv5ddf2snwwrhf8xt2s5y5m4ujpm2aec6mekrd4qk8ls5c