What is Blockchain and How Does It Work?

What is Blockchain and How Does It Work?
Photo by Omar Flores / Unsplash

What is Blockchain?

Blockchain is a distributed ledger technology that allows for secure, transparent, and tamper-proof transactions. It is a system of recording information in a way that makes it difficult or impossible to change, hack, or cheat the system.

Blockchain is made up of blocks of data that are linked together using cryptography. Each block contains a unique hash, which is a mathematical value that is used to verify the authenticity of the block. The blocks are then linked together in a chain, which makes it very difficult to change or alter any data in the blockchain.

Blockchain is a relatively new technology, but it has already been used in a variety of applications, including financial transactions, supply chain management, and voting. It is seen as a potential solution to many of the problems that plague traditional financial systems, such as fraud and corruption.

How does Blockchain work?

Blockchain works by using a distributed network of computers to record transactions. Each computer in the network has a copy of the blockchain, which means that there is no single point of failure. If one computer is hacked or taken offline, the other computers in the network will still have a copy of the blockchain.

When a transaction is made, it is added to a new block. The block is then encrypted and linked to the previous block in the chain. This creates a chain of blocks that is secure and tamper-proof.

Benefits of Blockchain

There are many benefits to using blockchain technology. Some of the most notable benefits include:

  • Security: Blockchain is a very secure technology. The data in the blockchain is encrypted and linked together, which makes it very difficult to change or alter.
  • Transparency: The blockchain is a transparent technology. All transactions that are made on the blockchain are visible to everyone in the network. This makes it very difficult to commit fraud or corruption.
  • Immutability: The blockchain is an immutable technology. Once a block is added to the chain, it cannot be changed or deleted. This makes it a very secure way to store data.

Drawbacks of Blockchain

While blockchain has many benefits, there are also some drawbacks to consider. Some of the most notable drawbacks include:

  • Complexity: Blockchain is a complex technology. It can be difficult to understand and implement.
  • Cost: Blockchain can be expensive to implement. The cost of setting up and maintaining a blockchain network can be prohibitive for some businesses.
  • Energy consumption: Blockchain is a very energy-intensive technology. The mining process that is used to add blocks to the chain requires a lot of computing power, which can lead to high energy consumption.
some lights in one of my favorite coffeehouse that i disciverd thanks to my sister. it captures that feeling that i had on bali back in may, how i miss this palce
Photo by Christian Dubovan / Unsplash


Blockchain is a powerful new technology that has the potential to revolutionise many industries. It is a secure, transparent, and immutable technology that can be used to record transactions, manage supply chains, and vote. However, there are also some drawbacks to consider, such as complexity, cost, and energy consumption.

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