this post was submitted on 12 Jun 2025
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Seems like an optimization that is not really needed. The data format is not really the bottleneck, there are ActivityPub relays that can send messages in bulk and ActivityPub is built on LinkedData, which means that there plenty of powerful libraries in most languages that can parse and produce JSON in a way that keeps application developers with a consistent semantics. The more people try to change the data format in the sake of "efficiency", the less portable and useful it would be.
Yes and no. Most of the current software do authentication by using HTTP Message Signatures, so after you fetch the actor's public key every request is authenticated by seeing an HTTP header, which makes it no different most common authentication schemes.