My email is hiden64@protonmail.com. Using ProtonMail... obviously :P.
Matrix
You can find me on Matrix at @hiden128:matrix.org. This is one of the platforms I use the most.
Mastodon
You can find my account (on the mstdn.social instance) here.
IRC
On IRC, you can usually find me at NickNet (irc.nick99nack.com:6667, no SSL) on #hiden (linked to HIDEN's Shithole), and #winboards on R-Type (irc.r-type.ca:6697, SSL required).
Telegram
My Telegram is @hiden64.
Discord
My Discord is HIDEN#3556. You'll see me on here the most.
I own a Discord server as well. If you want to join, it can be found here.
Last.fm
Last.fm is a music database. It recommends you music based on what you listen to, as well as show you what your friends are listening to.
My profile can be found here.
YouTube channel
My YouTube channel can be found here. The content is rather grab-bag; I just upload/stream whatever I feel like uploading. It could be anything :P.
Well... when I do upload, that is, which isn't that often to say the least :P.