Distributed Ledger Technology vs. Blockchain: What’s the Difference?

Certain aspects of decentralized technologies remain confusing, not unlike the distinction between Web 3.0 and Web3. In industry media, press releases, and even technical documentation, the term DLT is still sometimes used as a stand-in for blockchain, and vice versa, even though the 2 aren’t synonyms. The result is a layer of confusion that has gradually deepened.

CP Media’s editorial team sets out to clarify exactly where distributed ledger technology differs from blockchain.

DLT vs. Blockchain: Key Differences

Distributed Ledger Technology (DLT) is a class of decentralized systems in which multiple participants jointly maintain and verify a data ledger. New records are added only after they’re approved under predefined rules, while the integrity of the ledger’s state is maintained not by a single operator, but by the network’s architecture and validation mechanisms.

Blockchain is a specific implementation of distributed ledger technology. It’s the best-known one, but it’s not the only one. The European Central Bank (ECB), for example, uses similar wording in its official documentation.

What Is a Distributed Ledger?

A distributed ledger is a decentralized record-keeping system that captures information about rights, obligations, transactions, and events. In a centralized architecture, a single operator manages the ledger, such as a bank, a depository, a trading venue, or a government agency. In a decentralized architecture, however, that management function is distributed across multiple nodes. These nodes participate in data storage, as well as in the validation and recording of changes, while the correctness of each state transition is ensured through access rules, a consensus mechanism, and cryptographic verification.

Examples of DLT systems that aren’t blockchain networks include:

1. Corda. Corda is an enterprise DLT platform launched by the international financial-technology consortium R3 in 2016 for financial institutions and regulated markets. Its infrastructure allows authorized participants to record transactions, settlements, and legally significant obligations without constantly reconciling fragmented databases. Unlike blockchain networks, Corda doesn’t create a global chain of blocks. Data are visible only to the participants in a specific transaction, while the uniqueness of states is confirmed by notary services.
2. Holochain. Holochain is an open platform for decentralized applications (dApps), developed by the Ceptr team in 2017. The project is based on Distributed Hash Table (DHT) technology, similar to BitTorrent, but adds cryptographic signatures and application-level validation. Within the system, each participant maintains their own signed chain of actions, while data published to the DHT is validated by other nodes according to the rules of a specific application.
3. Hedera. Hedera is a public DLT network launched in 2018 by Leemon Baird and Mance Harmon. The project is designed as a high-performance infrastructure for enterprise-grade decentralized applications. Hedera is built on the unique hashgraph consensus algorithm, whose structure relies not on a chain of blocks, but on a directed acyclic graph (DAG).

It’s important to note that a distributed or decentralized data structure doesn’t mean the data is fully open. Network participants can have different levels of access to information. For example, Canton Network is built as a network of networks, allowing major institutional and corporate players to maintain their own sub-ledgers while interacting through a shared synchronization layer. As a result, data within the Canton Network is shared only with the nodes that need to see it under the terms of a smart contract. That said, Canton Network itself is considered a blockchain network and is described in its official documentation as a “privacy-enabled blockchain protocol.”

What Is Blockchain?

Blockchain is a specific way to structure a distributed ledger. Records are grouped into blocks, and each new block is linked to the previous one by a cryptographic hash. As a result, changing an old record breaks the link with subsequent blocks and becomes detectable.

That same logic underpins Bitcoin. Its design describes a network in which transactions are ordered through a chain of hashes and proof-of-work, while changing the ledger’s history requires recomputing the blocks that follow.

Key Differences Between DLT and Blockchain

Beyond this conceptual distinction, the differences between DLT systems and blockchain networks can be described across several layers:

1. Data organization. In a blockchain, records are grouped into blocks and linked into a chain, which is reflected in the term itself. In other distributed ledgers, data may be stored differently, such as a sequence of facts, states, relationship graphs, or private data sets shared among participants.
2. Consensus mechanism. In blockchain networks, participants usually agree on a single sequence of blocks, meaning the canonical history of the ledger. In other DLT systems, consensus may not revolve around a global chain of blocks. Instead, it may apply to specific transactions, states, messages, or obligations between participants.
3. Trust model. Public blockchain networks aim to minimize the need to trust a single operator through consensus algorithms, open verification, and broad data replication.

It’s worth noting that this trust model comes with trade-offs, including redundant storage, limited privacy, greater technical complexity, and potential confirmation delays. Other DLT architectures may strike a different balance. They can restrict data distribution, validate specific transactions or states rather than the entire global history, and rely on access rules, participant identity, or specialized service nodes. In such systems, trust doesn’t disappear. It’s redistributed across the technical protocol, network governance, and infrastructure operators.

Is Blockchain Always a Network?

There is another common theoretical question in basic terminology that often comes up among users of Web3 solutions: is blockchain always a network?

The answer is no. Blockchain should first be understood as a way to organize data. Any blockchain can be viewed across 3 levels:

1. Data structure, meaning a chain of blocks in which each block is cryptographically linked to the previous one.
2. Protocol, meaning the set of rules that defines how blocks are created, how changes are verified, and how consensus is reached.
3. System architecture, which can be implemented as a single node or as a network of nodes jointly maintaining the ledger.

In other words, blockchain is primarily a technical architecture that defines the structure of data and the rules for agreeing on it. An internal audit log, for example, can be built on this principle on a single server. In that case, there is a chain of blocks, but there is no distributed network of nodes and no consensus among independent participants. That makes it a blockchain-like structure, but not a blockchain network.

In practical terms, however, Bitcoin, Ethereum, and other well-known blockchains associated with cryptocurrencies consist of many nodes and are indeed networks.

Choosing Between a Blockchain Network and a DLT System

Using a blockchain network makes sense when transparency, verifiability, a single transaction history, and censorship resistance matter. That’s why public blockchain networks are used as infrastructure for digital assets, open payment networks, and decentralized applications in projects that bring together large numbers of participants who don’t necessarily know one another. Participants in these projects also often retain some degree of anonymity.

Other types of DLT systems are more often suited to interaction among a limited group of participants whose identities are known in advance. That’s why different DLT architectures are commonly used in sectors such as insurance, logistics, public administration, finance, and banking. In these systems, the priority isn’t openness. It’s data consistency, access control, legal certainty, transaction finality, and compatibility with existing infrastructure.

It’s also important to note that blockchain networks come in different models, including private ones. These can also offer high performance, various privacy mechanisms, regulatory compliance tools, and other features that make them suitable for enterprise use cases.

Ultimately, the difference between DLT and blockchain is largely theoretical. In practice, what matters isn’t the label, but a clear understanding of the trust model, data-access rules, and transaction-verification process a particular system actually needs.