Bluesky
Bluesky is an American microblogging service and reference application for the decentralized AT Protocol.
Last updated October 16, 2026
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Overview
Bluesky is an American social-media service focused on short-form public conversation, user choice, and interoperability. Users can publish text, images, and video, follow accounts, interact with posts, and participate in communities organized around shared interests. Unlike conventional centralized social networks, Bluesky is designed as the principal consumer-facing implementation of the AT Protocol, an open protocol intended to support portable identities, distributed hosting, and interoperability among social applications. The project began in 2019 as a research initiative announced by Twitter chief executive Jack Dorsey. Its original purpose was to investigate whether an open and decentralized standard could give people more control over their data, moderation experience, and social relationships. Twitter provided initial funding, but the project was deliberately structured to operate independently from Twitter's core business. Jay Graber was selected to lead the initiative in 2021, and Bluesky Social was incorporated as a separate company later that year. It became a benefit corporation in 2022, with a stated mission centered on developing and encouraging large-scale adoption of open, decentralized public-conversation technology. The company developed the Authenticated Data Experiment, later renamed the AT Protocol, together with Bluesky, a reference social application. Development accelerated after Elon Musk acquired Twitter in 2022 and the legal and financial relationship between Twitter and Bluesky Social ended. Bluesky opened as an invitation-only iOS beta in February 2023, added Android support in April, and released substantial portions of its software as open source in May. The invitation system helped establish early communities, including artists, Black users, LGBTQ users, left-wing users, sex workers, and furry communities. These groups influenced the service's culture and encouraged the development of community-led moderation and discovery tools. Bluesky opened registration to the public on February 6, 2024. Its growth subsequently came in waves associated with developments at X, including the blocking of X in Brazil, changes to X's blocking and data-use policies, and post-election migration by users in the United States, Canada, and the United Kingdom. The service reached more than 10 million registered users in September 2024, 20 million in November 2024, and approximately 30 million by January 2025, according to figures reported by the company and cited in reference coverage. Activity later softened from its post-election peak, illustrating the difference between registered accounts and regularly active users. Bluesky's distinguishing features include algorithmic choice, user-created feeds, moderation and labeling services that can be selected independently, starter packs for discovering groups of accounts, and domain-based handles that can help users verify identity through control of a web domain. The company describes this model as a composable user experience: users can combine feeds, moderation services, and applications rather than receiving one fixed ranking and safety system. As of the reference period, Bluesky had no advertising business and relied principally on investment funding and fees associated with hosting accounts on custom domains. It remains a privately owned benefit corporation headquartered in the United States.
History
Bluesky originated in 2019 when Twitter announced an initiative to research an open and decentralized standard for social media. The project was influenced by arguments that protocols could separate social communication from the incentives and moderation policies of a single platform. Twitter assembled specialists in decentralized technology and later funded the work with an initial grant. Jay Graber became the project's leader in August 2021. In October of that year, the project was incorporated as Bluesky Social, an independent organization intended to avoid the entrenched incentives of Twitter's existing platform. The company became a benefit corporation in February 2022 and hired its first employees the following month. It developed the Authenticated Data Experiment, subsequently renamed the AT Protocol, and built Bluesky as a reference implementation through which the protocol could be tested by ordinary users. Elon Musk's acquisition of Twitter in 2022 led to the termination of Twitter's legal and financial ties with Bluesky. The separation increased Bluesky's independence but also removed a major source of support. A waitlist for the social application opened in October 2022, followed by an invitation-only iOS launch on February 17, 2023. Android support arrived in April, and the application's code was made open source in May. The controlled beta grew quickly, reaching one million registered users in September and more than two million in November. The early user base played an important role in shaping Bluesky's identity. Artists, Black communities, LGBTQ communities, left-wing users, sex workers, and furry communities were among the groups that adopted the service early. Their presence contributed to a culture that was generally viewed as left-leaning and encouraged the creation of community-specific moderation and discovery practices. A July 2023 controversy over racial slurs in account handles exposed weaknesses in the initial safety system. Bluesky issued an apology, revised its terms of service, and created a trust-and-safety function. The service replaced its earlier cloudy-sky imagery with a blue butterfly logo in December 2023. Public registration began on February 6, 2024, and the AT Protocol soon supported federation and the creation of additional applications and storage arrangements. Bluesky then experienced several waves of growth. Japanese users joined in significant numbers after public launch, while the blocking of X in Brazil produced a major Brazilian influx. Later in 2024, changes to X's blocking functionality and terms concerning artificial-intelligence training prompted another surge. Bluesky passed 10 million registered users in September, 13 million in October, and 20 million in November. After the 2024 United States election, migration from X accelerated, especially among users in the United States, Canada, and the United Kingdom who were dissatisfied with X's relationship to Elon Musk and its evolving policies. Registered accounts reached about 30 million by January 2025 and exceeded 35 million later that spring. However, measures of posting and liking activity declined from the November 2024 peak, demonstrating that account totals overstated the number of consistently active users. Bluesky also experienced infrastructure pressure, including a major outage in April 2025, as it expanded its servers and moderation capacity. Corporate control remains with Bluesky Social PBC, a privately owned benefit corporation associated with Graber and employees. The company has emphasized that it does not want to rely on advertising and has explored optional services, while custom-domain account hosting has been identified as a revenue source. Its long-term model rests on the AT Protocol's ability to support interoperable social applications, portable identities, user-selectable algorithms, and independently operated moderation services.
- 2024
Public registration begins
[1]Bluesky removed its invitation requirement and opened account creation to the general public.
- 2024
Registered users pass 20 million
[1]A series of migrations from X pushed the service past 20 million registered accounts in November.
- 2023
Invitation-only beta begins
[1]The iOS beta launched in February, followed by Android availability in April.
- 2022
Converted to a benefit corporation
[1]Bluesky Social adopted benefit-corporation status and stated a mission focused on open public conversation technology.
- 2021
Jay Graber appointed to lead the project
[1]Graber took charge as the initiative moved from research toward protocol and product development.
- 2021
Bluesky Social incorporated independently
[1]The project became a separate company rather than remaining an internal Twitter program.
- 2019
Decentralized-social research initiative announced
[1]Twitter announced Bluesky as an effort to investigate open and decentralized standards for social networking.
Products and positioning
An open, decentralized, user-controlled alternative to conventional centralized social-media platforms, emphasizing algorithmic choice, portable identity, composable services, and community-led moderation.
Social-media service · 2023
Bluesky
Bluesky is the company's consumer social application. It supports short posts, images, video, follows, replies, reposts, likes, profile customization, and public discovery. Its product identity is built around user choice: people can select different feeds, use community-created starter packs, and subscribe to moderation or labeling services instead of receiving one fixed ranking and safety configuration.
Open social-networking protocol · 2022
AT Protocol
The AT Protocol is the open protocol developed by Bluesky Social to support decentralized social networking. It provides mechanisms for portable accounts, public data repositories, federation, domain-based handles, and interaction among independently built applications. Bluesky serves as its principal reference implementation, while the protocol is intended to support a broader ecosystem than the Bluesky application alone.
Identity and account-hosting service · 2023
Custom-domain accounts
Bluesky allows users and organizations to use domain names as account identifiers. Control of a domain can help establish an account's relationship to a website or organization, providing a form of self-verification within the AT Protocol. Account hosting on custom domains has also been described as the company's principal revenue-generating service during its early commercial development.
Controversies
2023
Racial-slur handle and moderation controversy
Users objected that account handles could contain racial slurs and that discriminatory terms had been removed from a flagged-word list. A posting strike followed. Bluesky apologized, strengthened its rules against targeted discrimination, and established a trust-and-safety team.
Marketing campaigns
- 2024Public-registration expansion
Global
Bluesky removed invitations and made account registration generally available in February 2024.
Outcome. The change broadened adoption and preceded major growth in Brazil, Japan, North America, and Europe.
- 2023Early-adopter community building
Global online communities
During the invitation-only beta, Bluesky deliberately cultivated influential early users and communities that could help shape platform norms, explain the service, and attract additional participants.
Outcome. The strategy helped establish a distinctive culture and encouraged community-specific moderation and discovery practices.
Brand decisions
2024
Reject cryptocurrency integrationStrategyBackground
While announcing Series A funding, Bluesky addressed concerns that cryptocurrency could shape the product's incentives.
Action taken
The company said it would not integrate cryptocurrency into the social application or AT Protocol.
Aftermath
The decision reinforced Bluesky's positioning around a less financially driven social experience.
2023
Strengthen trust and safety after the handle controversyStrategyBackground
Users criticized gaps in the handling of discriminatory account names and flagged content.
Action taken
The company apologized, amended its terms of service, and created a trust-and-safety team.
Aftermath
The episode became an early test of Bluesky's promise of community-centered but enforceable moderation.
2021
Separate Bluesky from TwitterStrategyBackground
The project concluded that Twitter's existing business incentives could hinder the development of an open social standard.
Action taken
Bluesky Social was incorporated as an independent company while continuing to develop the decentralized protocol and reference application.
Aftermath
The structure enabled operational independence, although Twitter's later withdrawal of legal and financial ties affected funding prospects.
Recent events
Bluesky expands Attie with interactive experience creation tools[3]
Reported:
Bluesky announced the launch of new creation capabilities for Attie, allowing users to make websites, quizzes, games, polls, and other interactive experiences.
Bluesky announces plans to introduce payments[4]
Reported:
Bluesky plans to introduce payments in the coming months as part of a strategy to make money without relying on advertising.
Bluesky applies to make '.bsky' an internet domain suffix[5]
Reported:
Bluesky CEO Toni Schneider teased the company's long-term plans on Monday, sharing that Bluesky has applied to make '.bsky' an internet domain suffix, like .com or .org. If approved, users would be able to turn their longer social handles into shorter, cleaner domain names, and Bluesky says the process will still take 18-24 months.
Weekdays and relative dates follow the original report; their exact calendar dates have not been verified.
Bluesky adds Jack Dorsey to its board[6]
Reported:
Bluesky inducted Twitter co-founder Jack Dorsey to its board as it incorporated as an independent company.
Sources6 sources
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