There are more than 1,000 public blockchain networks—and tens of thousands if private networks are included. Why do new blockchains keep being created?
From App-Chains to Consortium Rollups: Which Type of Blockchain Should You Evaluate Based on the Problem You Need to Solve?
Every so often, someone tries to calculate the exact size of the blockchain universe and runs into the same obstacle: it’s impossible. What can be explained, however, is why the ecosystem continues to fragment instead of consolidate. For any industry deciding where to build, integrate, or custody digital assets, that is the question that truly matters.
The Number Nobody Can Pin Down
Industry estimates place the number of active public blockchains at more than 1,000 as of early 2026, including established Layer 1 networks, a growing wave of Layer 2 solutions, and specialized app-chains built for industrial or gaming niches.
When private, permissioned, and test networks are included—many of which do not have publicly traded tokens and therefore do not appear in conventional rankings—the figure rises into the tens of thousands, according to market analysis by WEEX.
THE GLOBAL BLOCKCHAIN MARKET IS VALUED AT APPROXIMATELY $67.4 BILLION, WITH FORECASTS PROJECTING SIGNIFICANT GROWTH OVER THE NEXT DECADE.
This uncertainty is not a measurement flaw—it is a symptom of the industry itself. The question “How many blockchains exist?” has no stable answer because new networks are launched every week, many disappear without formal notice, and a large portion of the ecosystem—particularly corporate and consortium networks—is never publicly disclosed.
Fragmentation as a Business Model, Not an Accident
The continued creation of new chains rather than consolidation around two or three dominant winners is not a market anomaly. It is a deliberate design choice driven by incentives.
Launching a blockchain today is almost as simple as deploying a smart contract. Modular blockchain architecture—which separates execution, settlement, consensus, and data availability layers—has reduced the cost of launching a high-performance Layer 2 network by orders of magnitude compared with just a few years ago.
At the same time, the app-chain model popularized by the Cosmos SDK allows teams to launch their own blockchain rather than build on a shared network. This enables them to define their own consensus mechanisms, tokenomics, and governance structures while capturing the network effects themselves rather than sharing them with a broader ecosystem.
The Ethereum Layer 2 ecosystem in 2026 is a textbook example. This year began with more active Layer 2 networks than ever before—and simultaneously fewer of them being economically viable.
According to L2Beat, the total value locked (TVL) across Ethereum scaling solutions exceeds $45 billion. Yet just three networks—Base, Arbitrum One, and ZKsync Era—account for more than 70% of that total.
The remaining 50-plus networks compete for what is left.
The same concentration appears in revenue. According to aggregated data from Dune Analytics, the top three Layer 2s generate nearly 80% of sequencer fee revenues.
It is a classic “winner-takes-most” dynamic—one that took the internet roughly a decade to develop but is emerging within the Layer 2 ecosystem only a few years after the launch of the first major rollups.
In other words, the barrier to creating a blockchain has fallen close to zero, but the barrier to making that blockchain matter—in terms of users, liquidity, and developers—remains extremely high.
That explains why the number of networks continues to grow while value becomes increasingly concentrated in only a handful of them.
What Types of Blockchain Networks Actually Exist—and Who Uses Them?
| Network Type | Examples | Characteristics | Typical Users |
|---|---|---|---|
| Public Blockchains | Bitcoin, Ethereum | Open networks with no central authority, where the entire transaction history is publicly auditable. | The foundation of most crypto activity and decentralized finance (DeFi). |
| High-Performance Alternative Layer 1s | Solana, Aptos, Sui, Avalanche, Cardano | Prioritize speed and low transaction costs over the institutional infrastructure that dominates Ethereum. | Consumer applications, payments, NFTs, and high-frequency use cases. |
| Layer 2s / Rollups | Arbitrum, Base, Optimism, zkSync, Starknet, Linea | Extensions of Ethereum that process transactions off-chain and settle on Ethereum, inheriting its security. | Where most of Ethereum’s real-world activity takes place today. |
| App-Chains | Dedicated gaming chains, specialized DEXs, blockchain-based social networks | Offer greater customization and value capture but sacrifice some liquidity and shared network effects. | Projects seeking full control over governance, economics, and infrastructure. |
| Private or Permissioned Blockchains | Walmart, Maersk supply-chain networks | Controlled by a single organization, with no public token or mining process. | Fortune 500 companies solving internal data-verification and traceability challenges. |
| Consortium Blockchains | Hyperledger Fabric, R3 Corda, Quorum | Operated jointly by multiple organizations. | Banks and financial institutions for interbank settlement, trade finance, and tokenization of real-world assets (RWAs). |
| Hybrid Networks | Public-private combinations | Combine public and private components depending on which processes require transparency and which require controlled access. | Organizations seeking a balance between openness and control. |
The Question Worth Asking
Counting blockchains is ultimately an exercise with no definitive answer.
Asking which type of network solves which problem—and for whom—is far more useful.
The market itself is already answering the first question through consolidation. Activity, liquidity, and developer talent are concentrating around a small number of dominant networks within each category, while a long tail of new chains continues to emerge and disappear with limited impact.
For fintechs, banks, payment providers, and enterprises evaluating where to build, that concentration map—not the total number of blockchains—is the metric that truly matters.