Six years ago, at the start of the COVID-19 pandemic, a developer going by Fiatjaff launched a protocol called Nostr — short for Notes and Other Stuff Transmitted by Relay. The idea was deceptively simple: give users a way to carry their followers and content between different websites and apps, with a login system that works like a Bitcoin wallet. Today, Nostr counts Edward Snowden and Jack Dorsey as prominent users, and a growing ecosystem of apps has built on top of it.
How Nostr Works
Nostr uses public and private keys — npub and nsec — much like a Bitcoin wallet. Users authenticate with those keys, and their data — posts, follows, everything — lives on relays, servers anyone can run. That means no single company controls the feed. Algorithms are chosen by the user, not the platform. The result: censorship resistance baked into the architecture.
From almost day one, Nostr supported Bitcoin micropayments called 'zaps.' Artists use them to receive tips and build international communities without needing a platform that takes a cut.
Apps Built on Nostr
A handful of apps have turned the protocol into something usable. Tunestr lets people stream music with live zap leaderboards. Wavlake focuses on independent music. Primal bills itself as the fastest way to get into Nostr. There's also Amathyst and Divine, each offering a different take on the same underlying social graph. Because identity is portable, a user can jump from one app to another without losing their followers or content.
Why It Still Matters
Nostr isn't a platform — it's an open-source information protocol that can transfer any kind of data, not just social media. The network effects belong to the user, not the company running the app. That distinction is what drew Dorsey and Snowden. As big social platforms tighten control over what users see and who they can follow, Nostr offers a model where moving your identity is as simple as sharing an npub.
The protocol is six years old now. It hasn't gone mainstream in the way its boosters hoped, but it hasn't gone away either. The next test: whether the apps built on Nostr can grow fast enough to attract users who aren't already deep into crypto — and whether the relay system can scale without centralizing.
