A $100 million funding round closed in April 2025 — but Bluesky stayed silent about it until now. That silence was strategic. While rivals chased headlines, Bluesky’s team tripled its user base, scaled its developer ecosystem, and quietly built what decentralized social media trends have been promising for years: a real, open social web. The disclosure, landing alongside a major CEO transition, has finally pulled the curtain back.
The Bluesky Series B Funding: What the Round Really Signals
The bluesky series b funding was led by Bain Capital Crypto, with participation from Alumni Ventures, Anthos Capital, Bloomberg Beta, the Knight Foundation, and True Ventures. That’s not a typical Silicon Valley cap table. A journalism-focused nonprofit, a crypto-native fund, and legacy tech VCs all betting together on the same platform? It signals that investors view Bluesky as infrastructure — not just another app competing for eyeballs.
The company completed a Series A funding round in October 2024, raising $15 million. That earlier round was led by Blockchain Capital, which backed the company as it was formalizing its protocol and early product strategy. Previous funding also included an $8 million seed round in 2023. The bluesky series b funding dwarfs both of those combined, and the capital has already been put to work. The additional funds have been used to scale Bluesky’s team, while the company continues to develop Bluesky’s app and the underlying AT Protocol that powers it.
Perhaps the most striking detail is that the $100 million round was kept “under the radar” for nearly a year. Such stealth funding made it possible for the team to concentrate on building world-class infrastructure in peace. In an industry that rewards noise, Bluesky chose execution.
Bluesky User Growth Statistics Tell a Compelling Story
The bluesky user growth statistics are hard to dismiss. In April 2025, Bluesky raised $100 million in Series B funding led by Bain Capital Crypto. Since the Series A, the platform has grown from 13 million to over 43 million global users. The platform’s growth trajectory shows consistent expansion, crossing major milestones including 10 million users in September 2024, 20 million users in November 2024, and 30 million users by January 2025.
Two external shocks turbocharged those bluesky user growth statistics. When Brazil banned X in September 2024, Bluesky gained 2.6 million Brazilian users in one week. The U.S. presidential election in November 2024 set off a surge of 13 million new users in just six weeks. During the window of November 6–15, daily website visits in the U.S. ballooned by 519% compared to average traffic for the first ten months of 2024.
The demographic picture is equally interesting. Altogether, 70% of active users are under 34, reflecting a strong foothold among younger demographics. The average Bluesky session lasts 10 minutes and 35 seconds, indicating strong user engagement and a browsing experience that keeps users actively involved. For a platform with no ads and no algorithmic bait, that retention is notable.
Growth has moderated since the election surge. According to Bluesky’s open-source data, the number of daily posters on the platform has been declining each month since its peak in January 2025, following Trump’s Inauguration — though it is still four times as large as it was last year. Sustained growth at four times baseline is still growth. Decentralized social media trends rarely produce overnight monopolies — they compound slowly, then suddenly.
AT Protocol vs ActivityPub: The Protocol Debate That Defines the Decentralized Social Media Trends
To truly grasp where decentralized social media trends are heading, you need to dig into the protocol layer. The debate around at protocol vs activitypub is not a niche developer argument — it shapes how billions of people might interact online in the next decade.
The conceptual model of ActivityPub resembles that of email: independent servers sending messages to each other. The conceptual model of AT Protocol resembles that of the web: independent sites publish data, and indexers aggregate this data into different views and apps.
The AT Protocol aims to address perceived issues with earlier decentralized social networking protocols such as ActivityPub and Nostr — including user experience, semantic interoperability, discoverability, network scalability, and portability of user data and social graphs. It employs a modular microservice architecture and a federated, server-agnostic user identity to enable seamless movement between network services.
Both protocols represent serious attempts to solve the problems of centralized social media, but they take fundamentally different approaches. AT Protocol prioritizes global consistency and application interoperability, while ActivityPub emphasizes federation and community control. Neither is perfect. The real-world at protocol vs activitypub distinction comes down to a practical question: who owns your identity — you, or the server you happen to sign up on?
Understanding Decentralized Identifier (DID) Resolution
At the heart of AT Protocol’s identity system is decentralized identifier did resolution. AT Protocol uses Decentralized Identifiers (DIDs) as persistent account identifiers. The core DID standard was developed by the W3C, and describes a framework for compliant identifier systems.
The AT Protocol utilizes a dual identifier system: a mutable handle, in the form of a domain name, and an immutable decentralized identifier (DID). DIDs resolve to DID documents, which contain references to key user metadata, such as the user’s handle, public keys, and data repository. When you move from one server to another, your DID stays constant — and so does your social graph.
The PLC Directory implements the W3C Decentralized Identifier standard, making it interoperable and reusable by other applications and organizations. Bluesky Social PBC developed DID PLC because existing DID methods were unsatisfactory. The goal was a strongly consistent, highly available, recoverable, and cryptographically secure method. PLC stands for “Public Ledger of Credentials.” The system has been in production use for several years, with over twelve million registered DIDs in the AT Protocol network as of October 2024.
Decentralized identifier did resolution isn’t without controversy. The usage of these DID methods has been criticized for potentially compromising the decentralization of the protocol. The did:plc method in particular has been noted as being a single point of failure, as its current implementation relies on a single registry hosted by Bluesky Social. It’s a real tension — one the team is actively working to resolve as the protocol matures.
Social Media Platform Interoperability and the “Atmosphere” Ecosystem
Bluesky’s ambition extends far beyond building a better Twitter clone. Social media platform interoperability — the ability for different apps to share the same identity, data, and social graph — is the real prize. Unlike traditional social platforms controlled by a single company, the protocol enables multiple apps and services to interoperate under the same network. Bluesky says this design enables account portability — users can move between services without losing their identity, followers, or data — as well as algorithmic choice and composable moderation.
The number of developers building on AT Protocol is growing, as evidenced by over 400,000 downloads of developer tools (SDK) seen every month. People also use over a thousand apps built on AT Protocol every week. The Atmosphere currently contains about 20 billion public records — the posts, likes, comments, and other interactions that bring the ecosystem to life.
Bluesky’s social network has grown to over 36.5 million users, while the technology it’s built upon — the AT Protocol — is being used to develop dozens more applications designed to work together as part of an open social web. Apps like Flashes (an Instagram-style photo-sharing experience), Leaflet (long-form blogging), and SkyMuseum (art galleries) all run on AT Protocol. Flashes grabbed 30,000 downloads in its first 24 hours.
Social media platform interoperability also has a cross-protocol dimension. Bridgy Fed software can crosspost content between all posts made on the ActivityPub protocol and posts using the Bluesky lexicon on AT Protocol. That bridge is imperfect, but it’s real. The AT Protocol is designed to support multiple social modes, not just Bluesky. Besides a Twitter-style microblogging app, AT Protocol could be used to implement Reddit-style forums, long-form blogs with comments, or domain-specific social applications. The same user identity, social graph, and user data storage servers can be shared between all of these apps.
Bluesky Revenue Model 2025: Building Sustainably Without Breaking the Mission
Money is where Bluesky’s story gets complicated. The bluesky revenue model 2025 is still early-stage — by design. Bluesky’s business model must be fundamentally different: it is a public social network and its code is all open source, so there is no “moat” when it comes to data. The platform set out to build a protocol where users can own their data and always have the freedom to leave, and this approach means that advertising couldn’t be the dominant business model.
As of April 2025, the company’s only revenue stream was the hosting of accounts on custom domains. Bluesky is developing a subscription model which would enable users to pay for add-on features “like higher quality video uploads or profile customizations like colors and avatar frames,” while it’s also looking to establish a voluntary monetization path for creators. Core features — posting, liking, following — will remain free.
The bluesky revenue model 2025 is taking shape under new leadership. Founder Jay Graber is stepping down as CEO to become Chief Innovation Officer, a move that signals a clear pivot from visionary building to scaling execution. Interim CEO Toni Schneider, a former Automattic CEO, has been brought in to drive this commercial phase. His background at the WordPress parent company provides a relevant blueprint for building a real business around open software. By recruiting Schneider, Bluesky is revealing its future plans — just as WordPress created an open-source infrastructure that now runs more than 40% of the Web, Bluesky plans to run the “Open Social Web” on AT Protocol.
What Decentralized Social Media Trends Mean for the Open Web
Pull back and the pattern is clear. Decentralized social media trends aren’t just reshaping where people post — they’re rewriting who owns the infrastructure of public conversation. Bluesky describes itself as “an initiative to transition the social web from platforms to protocols.” That framing matters. Protocols don’t die when a CEO makes a bad decision or a government imposes a ban. They persist, evolve, and enable others to build.
As of January 2026, the AT Protocol’s general architecture, user repository, and data synchronization specifications are in the process of standardization within the Internet Engineering Task Force (IETF). IETF standardization is how HTTP became the web’s backbone. Decentralized social media trends gaining IETF attention means they’re entering the infrastructure canon — not the hype cycle.
The $100M in fresh capital, the 43 million users, the 1,000+ apps in the Atmosphere, and the IETF standardization process are not isolated data points. They’re compounding signals that a genuine open alternative to centralized social media is taking root.
Conclusion: The Open Social Web Is No Longer Just a Vision
Bluesky’s quiet $100M raise tells you everything about how this team operates. Heads down. Build first. Talk later. That discipline has produced a platform with 43 million users, a thriving developer ecosystem, and a protocol drawing serious institutional investment and IETF scrutiny. The decentralized social media trends reshaping online communication now have a well-funded, protocol-first flagship leading the charge.
Whether Bluesky can translate that infrastructure momentum into a sustainable business model remains its defining challenge. The architecture is real. The bluesky user growth statistics are real. The developer ecosystem is real. And the vision — a social web no single company controls — is no longer theoretical.
If you’re a user, create an account and explore custom feeds. If you’re a developer, check out the AT Protocol documentation and the open-source GitHub repository. The open social web is under construction — and it needs builders, not just spectators.
Frequently Asked Questions
What is the Bluesky Series B funding, and when was it raised?
In April 2025, Bluesky raised $100 million in Series B funding led by Bain Capital Crypto, with participation from Alumni Ventures, Anthos Capital, Bloomberg Beta, the Knight Foundation, and True Ventures. The round was not publicly disclosed until March 2026, nearly a year after it closed, coinciding with a leadership transition at the company.
How many users does Bluesky currently have?
Bluesky currently has 40.2 million registered users and crossed the milestone of 40 million users in October 2025.The platform grew from 13 million users at the time of its Series A in October 2024, representing more than a tripling of the user base in roughly a year.
What is the difference between AT Protocol and ActivityPub?
One of the most compelling features of AT Protocol is its ability to let multiple applications access the same user identity and data. Unlike ActivityPub’s approach, where each instance operates somewhat independently, AT Protocol allows users to maintain a single identity across different applications — whether it’s a microblogging app, a code repository, or a publishing platform.
What is decentralized identifier (DID) resolution on Bluesky?
A handle in Bluesky is associated with a DID, which can be resolved using DNS or HTTPS. A decentralized identifier (DID) is a globally unique persistent identifier that does not require a centralized registration authority and is often generated and/or registered cryptographically.This allows your identity to remain constant even when you move between servers.
What is Bluesky’s revenue model in 2025?
Bluesky believes there must be better strategies to sustain social networks that don’t require selling user data for ads. Its first step in another direction is paid services, starting with custom domains. A premium subscription offering and optional creator monetization tools are also in development. The platform currently carries no advertising.
How does social media platform interoperability work on AT Protocol?
AT Protocol creates a standard format for user identity, follows, and data on social apps, allowing apps to interoperate and users to move across them freely. It is a federated network with account portability.Over 1,000 apps currently built on AT Protocol demonstrate this in practice.
Who leads Bluesky after the CEO transition?
On March 9, 2026, it was announced that Jay Graber had stepped down from her role as CEO, replaced in the interim by venture capitalist Toni Schneider.Schneider, a True Ventures partner and former CEO of Automattic (the WordPress owner), joined as interim CEO as the board begins a worldwide search for a permanent replacement. Graber transitions to Chief Innovation Officer.
