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Bitcoin Maxi Jack Dorsey Unveils New Open Source Group Chat App

Jack Dorsey's Block is taking on Slack with a decentralized communication tool designed to solve the ownership problem in corporate messaging.

Originally on Bitcoin Magazine
AB

Adrian Boysel

Contributor

Jul 21, 2026

5 min read

Photo illustration / STKR News

We have all seen this movie before. A tech billionaire decides that the current state of digital communication is broken, centralized, and prone to censorship, so they set out to build a replacement. Usually, these projects end up as niche experiments or ghost towns. But when Jack Dorsey moves, builders generally pay attention because his obsession with decentralization isn't just a marketing slogan; it is the core thesis of his second act at Block.

The Problem With Modern Workspaces

If you are running a startup or a development team, you likely live in Slack or Microsoft Teams. These platforms are incredibly convenient. They are also massive silos. Your data, your history, and your team's collective intelligence are essentially hosted on someone else's server, subject to their terms of service, and locked behind a recurring subscription fee that always seems to go up.

For the average SaaS company, this is just the cost of doing business. But for builders in the crypto and AI space, there is a fundamental hypocrisy in building decentralized protocols while using centralized, surveillance-heavy tools to discuss them. This is the gap Block is trying to bridge with its new open-source group chat application.

Moving Beyond the Slack Model

The announcement from Dorsey’s team isn't just about making another chat app. We have enough of those. It’s about the underlying architecture. By making the platform open-source and decentralized, the goal is to remove the middleman. In a traditional setup, if Slack decides to de-platform your project because of a change in regulatory climate or a simple mistake in their automated flagging system, your team is blinded instantly.

In a decentralized model, the users own the identity and the data. This aligns with the broader Bitcoin-maxi philosophy that Dorsey has leaned into over the last few years. It isn't just about money; it's about the sovereignty of information. If you own your keys, you should own your conversations.

What This Means for Founders

For those of us in the trenches building tools, the first question is always: Is it usable? A tool can be the most decentralized, secure, and philosophically pure piece of software on the planet, but if it has a terrible UX, no one will use it. Slack is a giant because it works seamlessly. It has integrations for every developer tool under the sun.

The challenge for Block will be building an ecosystem, not just an app. Open-source projects often struggle with the polish required for mass adoption in a corporate environment. However, the pivot toward decentralized workforces means there is a growing market of founders who are tired of the platform risk associated with Big Tech. If you can provide a Slack-like experience without the Slack-like control, you have a winning product.

Identity and Persistence

One of the biggest friction points in decentralized tech is identity. We have spent decades getting used to email-and-password logins. Asking a marketing manager to manage a seed phrase just to check a team update is a hard sell. Block needs to solve the onboarding problem if they want this to be more than a playground for Bitcoin developers.

From a builder's perspective, the interest here lies in the protocol. If this chat app is built on top of an open protocol—similar to how Block has approached other projects like the Web5 initiative—it means we can build our own niche tools on top of it. Imagine a world where your project management tool, your chat app, and your code repository all share a decentralized identity layer. That is the holy grail of sovereign development.

Why Now?

The timing is interesting. We are seeing a massive pushback against the data-mining practices of AI companies. Most proprietary chat platforms are likely using your internal team data to train their models. That is a massive security leak for any company building proprietary tech. An open-source, decentralized alternative provides a “clean room” for innovation where you don’t have to worry about your internal brainstorms showing up in a competitor's LLM prompt next year.

The Skeptic's Corner

I have to be honest: we have seen Dorsey try this with various initiatives, and the results are mixed. Decentralization often introduces latency and complexity. If I am in the middle of a high-stakes launch and my chat app is lagging because of a peer-to-peer sync issue, I am going back to Slack in five minutes. Block has to prove that the trade-off for sovereignty isn't a sacrifice in performance.

There is also the question of the network effect. Chat apps live or die by who is on them. Most of our partners, vendors, and contractors are already on the major platforms. Convincing an entire supply chain to move to a new decentralized stack is an uphill battle that usually requires more than just "better philosophy." It requires a 10x improvement in utility.

A Protocol for Teams

What I am looking for in the coming months is whether Block opens this up for deep integration. If this is just a standalone app, it’s a curiosity. If it’s a framework that allows me to host my own encrypted communication nodes while still talking to the rest of the world, then we are looking at a shift in how company infrastructure is built.

  • Ownership of data is no longer optional for high-security startups.
  • Platform risk is the silent killer of modern software companies.
  • Decentralized identity is the next frontier for team management.

We need to stop renting our brains to the cloud providers. If Dorsey’s team can deliver a tool that feels as fast as Slack but acts like a sovereign protocol, the builder community will be the first to move. We operate on trust and transparency, and our tools should reflect that.

Takeaway for the Industry

The era of the monolithic SaaS stack is showing cracks. Builders should watch this project not as a direct replacement for their current workflow today, but as a signal of where the market is going. We are moving toward a "Bring Your Own Infrastructure" model. If you are starting a new project today, you need to ask yourself if you want your team's history to be a line item on a corporate balance sheet or a private asset that you actually control.


Read the original at Bitcoin Magazine →

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