Can Nostr replace X? Where the decentralized social network is headed

​As users searched for alternatives to X, Bitcoiners had a different answer: Nostr, a decentralized network where no company owns your account or controls what you can publish. Several years later, it still hasn't challenged X for mainstream users. But was replacing X ever really the point?

Nostr gets a surprising new use

In July, Jack Dorsey's Block gave Nostr an unexpected new role. The company launched Buzz, an open-source workspace where humans and AI agents can work together.

At first glance, Buzz looks more like Slack than X. Teams communicate through channels, while AI agents participate alongside human workers, with their own profiles and cryptographic identities. Underneath, however, Buzz is built on Nostr, the decentralized protocol best known as Bitcoin's alternative to conventional social media.

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So what exactly is Nostr?

Nostr stands for Notes and Other Stuff Transmitted by Relays. Despite its association with Bitcoin, it is not a blockchain. It is an open protocol for sending information between users through independent servers known as relays.

There is no Nostr company or central server. Users are identified by cryptographic keys rather than accounts controlled by a platform. They access the network through apps such as Damus, Primal or Amethyst, which communicate with relays that store and distribute posts.

The distinction sounds technical, but the idea is simple. If a conventional platform suspends your account, your identity and audience remain trapped inside that platform. On Nostr, your identity belongs to you, allowing you to move between compatible apps and relays without starting again.

Why Bitcoiners embraced it

Nostr shares much of Bitcoin's philosophy without actually running on Bitcoin: no central authority, open infrastructure and an emphasis on individual control.

It also developed something conventional social networks have struggled to make feel natural: paying people directly for content. Nostr’s zaps allow users to send small Bitcoin payments over the Lightning Network to someone whose post they enjoy. Think of it as a like with money attached.

The amounts are usually tiny, but the activity adds up. Nostr.band data cited by ecosystem trackers recorded more than 40,000 zaps worth roughly 8.2 million satoshis in a single week in October 2025, involving more than 2,600 senders.

Nostr has also attracted high-profile supporters. Jack Dorsey has helped fund development through OpenSats, while Edward Snowden has championed its decentralized structure. “If a platform is a silo, a protocol is a river: no one owns it, and everyone is free to swim,” Snowden said. OpenSats’ dedicated Nostr Fund remains active, announcing its seventeenth wave of grants in May.

So why isn't everyone using it?

Nostr solved one problem remarkably well: nobody owns Nostr. Unfortunately, that does not automatically make it easy to use. New users encounter cryptographic keys, relays and multiple clients before they have even built a social graph. Losing control of a private key can mean losing control of an identity, while moving that identity between devices can still be awkward.

Software consultancy Very Good Ventures, which has worked on Nostr applications, summed up the problem neatly: “Nostr's identity model is cryptographically elegant and practically painful.” There is no conventional password reset or support desk if something goes wrong.

Nostr developers increasingly recognize that much of this complexity has to disappear from view. “No app should ever talk about either Nostr or Bitcoin. They should just be what they are,” Amethyst creator Vitor Pamplona said. His point was simple: people should be able to use an app without worrying about the technology underneath.

The irony is hard to miss: some of the features that make Nostr attractive to people who distrust conventional social media also make it harder to sell to people who simply want an app that works.

How popular is Nostr today?

That question is surprisingly difficult to answer. Nostr has accumulated millions of public-key identities. A 2024 academic study described the network as having reached around 4 million users and 60 million posts within its first two years. But creating an identity requires little more than generating a cryptographic key pair, so the number says little about how many people actually use the network.

Actual usage is considerably smaller, with recent trackers generally putting active usage in the tens of thousands. Exact numbers are difficult to establish because different trackers see different parts of a decentralized network with no central database. 

The contrast is striking: millions of identities have been created, but Nostr retains a comparatively small core of regular users. It is nowhere near X, Threads or Bluesky in scale, yet people are still posting, sending Bitcoin and building new software on top of it.

Maybe replacing X was the wrong goal

Buzz suggests Nostr's future may extend beyond social media. Portable cryptographic identities and signed messages can support social feeds, but also messaging, payments, marketplaces and communication between AI agents.

Development around the protocol is continuing too. OpenSats announced three waves of Nostr grants between February and May 2026, funding 13 projects across applications and infrastructure.

Can Nostr ever go mainstream?

Nostr's current audience remains tiny compared with conventional social networks, and cryptographic keys and relays are still a difficult proposition when the alternative is simply downloading an app and entering an email address.

That may be why Nostr's future depends less on convincing millions of people to join a new social network and more on making the protocol disappear into products they simply want to use. Buzz offers one glimpse of what that could look like. If Nostr does eventually reach a mainstream audience, many of those users may not even know they are using it.