https://cosocial.ca/users/evan posted on Mar 29, 2026 19:22
In reply to: https://activitypub.space/post/1682
In reply to: https://activitypub.space/post/1682
@julian OK. I use a separate key ID and actor ID for HTTP Signature, so that can throw off some implementations.
@julian I commented on the ticket! Looks like we can both make some changes to make this more robust. I'm going to push and test today.
@wjmaggos I'm not sure of your question. You mean, is there a document about how hashtags work on the Fediverse? And a similar document about how user and content search works on the Fediverse?
@ufal the followback account? I've had a couple of notes on that. Can you add more info here?
@mlanger @jakebrake @mayintoronto
You can definitely opt out of tags.pub! Nobody has to use it if they don't want to.
You can follow hashtags in Mastodon; many other servers on the Fediverse don't have that feature.
When you follow a hashtag in Mastodon, it only shows you content from people you follow, or from people who others on your instance follow. If someone posts on the Fediverse using a hashtag and nobody on your instance follows them, you won't see it.
@mlanger @jakebrake @mayintoronto you're right that there are very few followers for the hashtag accounts on tags.pub. We are just getting this service started.
We're actually pretty careful with bandwidth.
I am one of the authors of ActivityPub, and I wrote a programmer's guide for O'Reilly Media about the protocol. I try to use it as carefully as I can.
If nobody's following a hashtag account, no data gets delivered.
@adb thank you friend!
@dubious_dragon I think so.
@jakebrake @mayintoronto Hey, Jake. Your concerns are justified! It's never a bad idea to look at projects carefully.
tags.pub is one of the oldest projects on the ActivityPub network. It was one of the test implementations of ActivityPub. It's been dormant for years; we've been lucky enough to get to implement this with funding from the Sovereign Tech Agency.
The service is opt-in, either by user or by server (and users can opt out if their server opted in). Nobody has to use it.
Our Fediverse & Social Web track has been accepted for @COSCUP@floss.social 2026 (Taipei, Aug 8–9)! We’ll have a full day—six hours—to fill with talks on the #fediverse, #ActivityPub, and the open social web.
The CFP for speakers isn’t open yet, but we’ll announce it here when it is. Stay tuned!
#SocialWeb #COSCUP #fedidev
@hongminhee @COSCUP STAYING ABSOLUTELY TUNED
I'm chairing a breakout session on Reviving the #ActivityPub Social API at the W3C breakout day in a few minutes!
https://www.w3.org/events/meetings/fd048dc6-4486-4e21-a639-545523e4ca60/