What is Blockchain Technology and how does it work?

What is Blockchain Technology and how does it work?

A blockchain is a distributed database that is accessible to all nodes of a computer network. A blockchain is a type of database that keeps data electronically in digital form. Cryptocurrency is the most well-known use case for blockchains.

One of the most fundamental functions of the blockchain is to act as a decentralized digital ledger for recording and sharing financial transactions. All participants’ ledgers are kept up to date with the latest transactions on the blockchain, and each block contains a record of those transactions. Distributed Ledger Technology (DLT) refers to a decentralized database that is managed by multiple parties (DLT).

A Google Doc can be used as an analogy to help explain the workings of the blockchain. Instead of being copied or transferred, a document is distributed when it is created and shared with a group of people. As a result, the document is distributed in a decentralized manner, allowing everyone to see it at the same time. Because all changes to the document are recorded in real-time, no one is locked out while waiting for another party to make a change. Blockchain is more complex than a Google Doc, but it’s an appropriate comparison to make because it demonstrates some of the most important concepts in this new technology.

How Does a Blockchain Work?

A “block” of data is created for each transaction that occurs. It’s possible to see the movement of a product or an intangible asset through these transactions (intellectual). The data block can store any information you want, including who, what, when, where, how much, and even the condition of a food shipment.

There is a direct link between the blocks that precede and follow it. In the process of moving an asset or changing ownership, these blocks of data form a chain. As the transactions are recorded in the blocks, the blocks are linked securely together so that no block can be altered or a new block can be inserted between two blocks. A blockchain is a chain of transactions that cannot be reversed. The previous block’s verification is strengthened with each subsequent block, and this strengthens the blockchain as a whole. Immutability is one of the most important advantages of blockchain technology. While it may seem counterintuitive, this ensures that you and other network members can trust each other’s transactions.

Benefits of Blockchain

If you’re a member of a blockchain network, you can be assured that your confidential blockchain records will only be shared with network members to whom you have allowed access. As a result, all network participants must reach an agreement about how accurate the data is, and all validated transactions can never be changed. A transaction cannot be deleted, even by a system administrator. Time-consuming record reconciliations are eliminated when a distributed ledger is shared across network members. A set of rules, known as a smart contract, can be placed on the blockchain and automatically performed.

Types of blockchain networks

It’s possible to construct a blockchain network in a number of different ways. It is possible to have them built by a consortium, the state, or a private company.

Distributed ledger technology (DLT)

A public blockchain, such as the one used by Bitcoin, is one that anybody may join and contribute to. Several drawbacks include a large amount of computing power, no privacy for transactions, and a lack of security. These are crucial factors to keep in mind when implementing blockchain in a business setting.

Private blockchains

A decentralized peer-to-peer network, a private blockchain network is analogous to a public blockchain network. When it comes to the network, however, there is only one organization that is in charge of determining who can participate and how the shared ledger is maintained. In some cases, this might have a major impact on participants’ trust and confidence. It is possible to run a private blockchain behind a company’s firewall and even host it on-site.

Permissioned blockchain networks

Permissioned blockchain networks are the norm for businesses creating their own private blockchains. Permissioned access to public blockchain networks is a significant consideration. This restricts who can engage in the network and what transactions they can participate in. Participants must be invited or given permission to participate.


After twenty-seven years of research and development and a number of practical uses, blockchain is finally building a reputation for itself, in no small measure due to bitcoin and cryptocurrency. It’s no secret that blockchain technology is a hot topic among investors, and it has the potential to improve corporate and government processes in a variety of ways.