When most people think about Web3, they picture blockchain, smart contracts, and apps you use online. But what about places with little or no internet? Could Web3 tools work offline? The answer is surprising: yes, thanks to offline blockchain, USSD crypto, and apps built for emerging markets.
Around the world, billions of people don’t have reliable internet but do have basic smartphones. In places like rural Africa, parts of South Asia, and Latin America, data is slow or too expensive to access. Without data, you can’t use most crypto wallets or online dApps, leaving these communities locked out of Web3 and financial inclusion.
Offline blockchain, crypto without internet, and USSD crypto are helping close this gap and make blockchain available to everyone. In Kenya and Ghana, services like M‑Pesa let people send money using simple phone codes, without needing an app. Now, new projects let users send crypto through USSD (Unstructured Supplementary Service Data) instead of using data networks.
One example is Machankura, a Bitcoin Lightning wallet accessible by dialling codes like 4838333# in Kenya or 9208333# in Ghana. Users can register with a PIN, view their balance, and send Bitcoin, all without the internet, with this crypto without internet model working on any GSM phone.
Similarly, CryptoMomo Africa offers a USSD wallet for USDC stablecoins in Ghana, where the user dials a code, sets a PIN, and can send or receive stablecoins with no internet or smartphone needed. It even works in local languages.
These tools are pioneering real Web3 inclusion because they let users in emerging markets use crypto with simple phones and no data.
How Does Offline Blockchain and USSD Crypto Work?
Offline blockchain refers to systems that let users hold and verify transactions on devices like smartphones without constant internet access, then sync later when they’re back online. Researchers have tested this idea since at least 2018, with delay-tolerant payments on Ethereum serving as a proof-of-concept.
When users generate signed transactions offline, they create a secure and valid action (like sending crypto) that doesn’t require an internet connection; it’s only broadcast later, and these transactions can be stored on phones, USB sticks, QR codes, or even printed on paper. Once someone with an internet connection comes along, or maybe at a nearby cybercafé or by walking into a village hub, they can upload that transaction to the blockchain.
It gets even more powerful when you add mesh networks into the mix. These local wireless networks, like Bluetooth or Wi-Fi, allow nearby phones and devices to talk to each other directly, without any need for a cell tower or the internet. If just one person in the area eventually connects to the internet, they can upload everyone’s stored transactions to the blockchain. This model has already been tested in remote parts of Africa and Latin America.
There’s also the rise of radio-frequency-based blockchain tools, like LoRaWAN, that transmit blockchain data over long distances via radio waves rather than traditional internet signals. Some setups have already started allowing Bitcoin transactions to be transmitted via satellites or ham radio, bypassing censorship and weak infrastructure entirely.
Tools like goTenna have also been used to demonstrate mesh-network-driven Bitcoin payments in areas with only basic connectivity, and USSD can let users interact with blockchain platforms via short codes (like *123#) using basic feature phones. Celo, a mobile-first blockchain, enables low-data transactions via an “ultralight client,” making it easier in places with data limits, with some projects letting people send stablecoins or Bitcoin using USSD menu codes, just like checking their phone balance.
These systems show that crypto without the internet isn’t just possible, and it’s happening. The future of offline blockchain, offline dApps, and Web3 inclusion is being shaped now, with serious momentum behind projects that believe everyone should have access to decentralized technology, no matter their location or device.
Celo: A Mobile-First Bridge to Web3
Celo is a blockchain focused on mobile usability in emerging markets, and they have built an “ultralight client” that reduces data usage by over 17,000× compared to Ethereum. Celo also supports stablecoins like cUSD, which work like dollars on your phone; fast, cheap, and accessible. Organizations like CARE are using Celo in Latin America to send aid via blockchain, cutting costs and reducing fraud.
Jack Dorsey’s Bitchat: Offline Messaging and Crypto Payments
Jack Dorsey, co-founder of Twitter and Block, recently launched Bitchat, a mesh-messaging app that works without an internet connection, using Bluetooth Low Energy (BLE). The app creates peer-to-peer encrypted chat via mesh networks, with no servers, SIM cards, user accounts, or an internet connection required. Bitchat isn’t just about messages; it also supports offline Bitcoin payments, allowing users to pre-sign Bitcoin transactions and relay them peer-to-peer over Bluetooth, enabling real digital cash transfers without the internet.
This matters for areas hit by internet shutdowns or censorship, like parts of the world facing natural disasters, censorship, or surveillance. Bitchat could let people exchange value and stay connected even when all else fails.
Building a Web3 That Doesn’t Trust Telecom Towers
Traditional Web3 apps need data and network connections, but ideas like Bitchat and Celo have shown that we can build for Web3 inclusion even without an internet connection.
Mesh networks (like Bluetooth clusters or USSD channels) can carry encrypted messages and value between phones, with your phone acting as both a user and a node, relaying data to nearby devices. This creates a small local blockchain or payment system that syncs later with the global network.
For example:
- •A farmer in Nigeria could send or receive cUSD via USSD menus, even with a basic phone.
- •During a protest with internet shutdowns, people could still share updates via peer-to-peer mesh apps.
- •Disaster relief teams could use offline crypto to distribute aid in remote areas.
These tools bring Web3 to parts of the world that mainstream apps often ignore, and they help rebuild this access, protect financial privacy where needed, and promote Web3 inclusion in places that rely on shared phones or limited data.
Challenges: Security, Scale, and Trust
Offline Web3 tools sound powerful, but they’re not perfect. Developers face issues like:
- Device trust: Phones in a mesh could be compromised. How do we trust the network?
- Security: Pre-signing transactions offline is risky, and what if the private key is stolen?
- Sync issues: When reconnecting to the internet, systems must avoid double-spending or conflicting updates.
- Regulation: Some governments might block USSD services that use crypto, or require compliance checks.
- Complexity: Building offline systems is more difficult than building standard dApps and needs testing in real-world conditions.
Despite these hurdles, pockets of open-source developers and people like Jack Dorsey are showing us what’s possible.
Why This Matters for You
Even if you live in a connected city, offline-capable Web3 tools still have a big impact on the entire ecosystem. They show that true decentralization isn’t just about being online all the time, but about smart code and people working together, and these tools help reduce the high costs often tied to using data-heavy blockchain apps and open the door for billions of people who don’t have steady internet to finally join Web3.
They also make the system more resilient by providing ways to keep running when central networks go down or are blocked. As more people gain access to these technologies, developers will be more motivated to build offline-first solutions for DeFi, DAOs, and digital identity, tools designed to work for everyone, no matter where they are.
The Road Ahead: What to Watch For
To bring offline Web3 tools to the masses, we need:
- •Standards that enable Bluetooth, USSD, or mesh clients to connect to real blockchains.
- •Secure key storage on phones that can safely sign offline transactions.
- •Bridging protocols that sync offline activity when users go online.
- •Local testing, done by communities in emerging markets to improve usability.
- •Partnerships with mobile operators to open up USSD channels for crypto.
In Conclusion
Yes, Web3 can work without the internet and innovations like offline blockchain, USSD crypto, and mesh tools like Bitchat. The next billion users can join the crypto world, even from places without WiFi.
These tools represent more than technology; they aim for Web3 inclusion, freedom from censorship, and real financial empowerment for people in emerging markets.
When your phone becomes both a wallet and a network node, Web3 stops being a niche project and becomes part of everyday life, and that includes even in remote villages. That’s the power of building for everyone, everywhere.