@jacksonchen666 @FediThing
From what I understand GoToSocial forces signed fetches, so it is compatible with authorized fetch on Mastodon. Meanwhile Lemmy can't handle it, if this matters to you.

Sources:

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https://github.com/superseriousbusiness/gotosocial/issues/1468

https://socialhub.activitypub.rocks/t/help-improving-federation-between-lemmy-and-other-projects/2308/39