Hi hellowdy, this is JP's non-business carrd [sic] of where to find me:

• @tropylium has been my most used username over the years, including:
  Discord, RateYourMusic, Bandcamp, Wikipedia & Wiktionary (, Tumblr on hiatus); and often on forums of yore, but who knows which of those accounts still work. (I still occasionally amble back to ConwayLife.com or the Zompist Bboard, if those say anything to you.) I believe there's a few abandoned accounts on e.g. one of the opensource social medias.
  • Not everyone going as "Tropylium" on the web is me! In particular the Reddit and Twitter accounts by the name are not.
  • As of the mid-2020s no new use of this username is planned.
• @oszillate is my personal alias on Twitter, backup presence also on Bluesky.
• Some former usernames you might know from decades back include boyonthestairs, caotope, Dr. Aileron, J Vertical, SLG (Satunnaislukugeneraattori)

Professional functions are described elsewhere (poke around the website or take a willd guess). If friends, you can ask about my presence on a few other platforms, e.g. Steam, Telegram, or for personal email addresses.

I have never been present on Facebook or Instagram and do not plan on starting.