Twitter’s decentralized alternative Bluesky arrives as an invite-only iOS app

An image showing three side-by-side screengrabs of Bluesky on mobile
Image: Bluesky

Bluesky, the decentralized project that originated within Twitter, has arrived on the Apple App Store as an invite-only social network, as first reported by TechCrunch. The listing also gives us one of our very first glimpses at the app, which closely resembles Twitter down to the timeline and profile pages.

The project’s backed by Jack Dorsey, the co-founder and former CEO of Twitter, and has been working on an app powered by its open-source social protocol for months now, called the Authenticated Transfer Protocol, or “AT Protocol” for short. Bluesky describes it as a “federated social network” where separate networks exist within a single hub.

According to Bluesky, AT Protocol is built based on four main ideals: account portability;…

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