Bluesky (social network)
Bluesky, also known as Bluesky Social, is a decentralized microblogging social platform and a public benefit corporation based in the United States. Jay Graber serves as the company's CEO and Twitter co-founder Jack Dorsey and XMPP creator Jeremie Miller sit on its board of directors.[3]
"Bsky" and "AT Protocol" redirect here. For British Sky Broadcasting, see Sky UK. For modem commands, see Hayes command set.
Type of site
11 languages[1]
October 4, 2021 in Wilmington, Delaware[2]
- Jack Dorsey (Board)[3]
- Jeremie Miller (Board)[3]
Bluesky Social, PBC[2]
- bsky
.social /about - bsky
.app (social interface)
Publicly available since February 6, 2024. Previously invitation-only.[4]
In addition to its website, the service is also accessible via apps for iOS and Android. The service is focused on microblogging, and has been called "Twitter-like".[8]
AT Protocol[edit]
Bluesky unveiled open source code in May 2022 for an early version of its distributed social network protocol, Authenticated Data Experiment (ADX),[19] since renamed the Authenticated Transfer (AT) Protocol.[11] The team opened its early code and placed it under an MIT License so that the development process would be seen in public.[19]
The AT Protocol's initial federation architecture centers around three main services: a Personal Data Server (PDS), Relay (previously referred to as a Big Graph Service, or BGS), and an AppView.[44] A PDS is a server which hosts user data[44] in "Data Repositories", which utilize a Merkle tree.[45] The PDS also handles user authentication and manages the signing keys for its hosted repositories. A Relay is described as analogous to an indexer on the web, ingesting repositories from a variety of different PDS hosts and serving them in a single unified stream for other services to ingest. AppViews, meanwhile, are services which consume data from a Relay and hydrate that data to provide behavior for specific clients, e.g. the microblogging feature set for the Bluesky Social app.[44]