COSine 2027 Participants

You can use this page to purchase a participant registration for COSine. Because COSine is a small convention, we cannot afford to give away memberships except to our Guests of Honor (the con committee and the staff also buy their own memberships). However, participants do get a reduced cost membership.

Please only purchase participant memberships if you are on a panel or are otherwise participating in running the convention.

Also, please DO NOT share this page with anyone.

Think you might already be registered? Click here to check, using our experimental registration lookup tool.

NOTE: By registering for COSine and providing us with an email, you are opting in to be contacted with information pertinent to COSine and First Friday Fandom. We will never sell your email or personal information.