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Distributed Ledger Technology Vs Blockchain Technology

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People often think of blockchain technology and distributed ledger technology as one and the same. Interestingly enough, that is not the case, even though it is not hard to see why some people would think along those lines. These terms have become entwined over the past few years, although it is important to distinguish the two from one another.

Distributed Ledger Technology

It is difficult to come across a unified explanation of how one should look at the concept of distributed ledger technology. A distributed ledger is a type of database spread across multiple sites, regions, or participants. As one would expect, a distributed ledger has to be decentralized, otherwise it would resemble a centralized database like most companies use today. Removing the intermediary party from the equation is what makes the concept of distributed ledger technology so appealing.

Moreover, enterprises use distributed ledger technology to process, validate or authenticate transactions or other types of data exchanges. Records are stored in the ledger once consensus is achieved by the majority of parties. Every record stored in the distributed ledger is timestamped and has its very own cryptographic signature.

All of the participants on the distributed ledger can view all of the records in question. The technology provides a verifiable and auditable history of all information stored on that particular dataset. Distributed ledger technology will often to be referred to as DLT in financial and government circles.

Blockchain

On paper, the entire description of a distributed ledger sounds exactly like what most people think of when they envision a blockchain. However, the blockchain is just one particular type of distributed ledger. Most people know it as the technology powering bitcoin, Ethereum, and other popular cryptocurrencies. The name blockchain also refers to how “blocks” are added to the chain, which contains transaction records.

To make the chaining of blocks possible, the blockchain uses a cryptographic signature, known as a hash. In this sense, it is certainly possible to use a blockchain as a ledger, which can be shared with anyone and everyone. In the case of cryptocurrencies, this can be achieved by the other parties looking up blockchain information in real-time and even without installing specific software to do so.

What makes blockchains so intriguing is how they are so much more than just a simple data structure. It is possible to use a blockchain to determine rules for a transaction or even to create a smart contract. Moreover, a blockchain is a sequence of blocks, but distributed ledgers do not require such a chain. Furthermore, distributed ledgers do not require proof of work and offer Рtheoretically Рbetter scaling options. Some implementations are capable of combining both a distributed ledger and blockchain, albeit this does not necessarily apply to every project focusing on either of these technologies.

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