AT Protocol is a decentralized social networking protocol developed by Bluesky Social PBC, using Decentralized Identifiers and a federated network architecture to power large-scale social web applications. AT Protocol's Twitter Score is 34 out of 1000 as of July 2026, ranking #37,916 (top 10%) among 473,418 tracked accounts.
AT Protocol, formally the Authenticated Transfer Protocol, originated as a research project in the context of X / Twitter before becoming the technical foundation for Bluesky Social PBC. The protocol operates without blockchains or cryptocurrency, and its developers have stated explicitly that it will not incorporate tokens, crypto trading, or NFTs into the social experience. Its architecture relies on a federated network of personal data servers, giving users greater control over their own data.
AT Protocol has attracted backing from several investors, including Blockchain Capital, Alumni Ventures, True Ventures, SevenX, Automattic, and Darkmode. In October 2024, Bluesky Social PBC announced a $15 million Series A led by Blockchain Capital to support the ATmosphere developer ecosystem. As of October 2024, the protocol reported more than 40 million users and over 1,000 personal data servers operating independently of Bluesky. AT Protocol's account has published 50 posts and has been mentioned by 18 accounts a total of 21 times.
Who follows AT Protocol on X?
AT Protocol draws a technically oriented audience on the platform. The accounts that follow AT Protocol include 138 founders, 34 angel investors, 62 influencers and 1 VCs, among them Kyle Samani, Jesse Powell, Alexis Ohanian, Mario Nawfal, Vance Spencer and Jason.