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What is blockchain technology and what is it used for?

In 2008, a message released to the world and written by Bitcoin’s creator, Satoshi Nakamoto, described the idea behind Bitcoin. It was, he declared, a new, fully peer-to-peer, electronic cash system that did not require any third-party involvement.

Since the 2009 launch and subsequent success of Bitcoin, numerous digital currencies have appeared, along with an explosion in decentralized finance applications, non-fungible tokens or NFTs, and smart contracts.

Without Blockchain however, Bitcoin would not exist. But how does a blockchain work?

Blockchain Technology

A blockchain is essentially a distributed database or ledger that helps maintain a secure and decentralized record of transactions that cannot be altered.

Because there is no way to change a block of data, trust is only needed at the point a user or program enters data, thereby removing the financial and time cost of using third parties.

More importantly, its underlying values of distributed ledgers, cryptography, and consensus mechanisms are not limited to Bitcoin and cryptocurrency uses.

The technology has in fact opened up a wealth of revolutionary applications across a wide range of industries and sectors.

In just a short space of time, Blockchain has become disrupted traditional industries and paved the way for a decentralized, secure, and transparent digital ecosystem.

Applications of Blockchain Technology

Financial Services

Banks and the financial service industry have done things a certain way for many years, sticking with tradition and unchallenged by competitors. That is, until now.

Whereas banks have opening hours and can take several days to process payments, Blockchain is almost instant and is available around the clock, every day of the week.

By integrating blockchain technology, banks can exchange funds quickly and securely, not just between individuals, but between companies, governments and financial institutions. This reduces the risk, costs, and time for all parties involved.


Many countries enjoy stable currencies, allowing the population to do business around the world, backed by the financial infrastructure of the home country. However, there are several countries who frequently suffer from unstable currencies, making business deals harder and riskier.

By spreading its operations across a network of computers, blockchain can allow Bitcoin and other digital currencies to operate without the need for a central bank or financial authority.

This not only reduces risk and transaction fees, but opens up domestic and international business opportunities to a wider network of institutions and people.


Medical records are a valuable and delicate information resource that, much like financial transactions, require fast, efficient, and secure exchanges between relevant parties.

Healthcare providers can use blockchain to store their patients’ medical records securely, ensuring patient privacy, data integrity, and seamless access for authorized providers. Other healthcare benefits include:

  • Clinical Trials Data Management: Blockchain can enhance the integrity and transparency of clinical trials data, facilitating collaboration among researchers and improving drug development efficiency.
  • Pharmaceutical Supply Chain: Blockchain can track the movement of pharmaceuticals from manufacturing to distribution, preventing counterfeiting and ensuring patient safety.

Government and Public Services

There are a multitude of blockchain technology applications that can be utilised by governments to reduce costs, errors, time, and fraud. Some of these include:

  • Identity Management: Blockchain can create secure and tamper-proof digital identities, reducing fraud and streamlining government services.
  • Voting Systems: Blockchain can improve the security and transparency of voting systems by preventing voter fraud, thereby increasing public confidence in election results and the democratic process.
  • Land Registry and Property Management: Blockchain can improve land registration and property transactions by reducing the time consuming and costly administrative work that is currently involved.

Benefits of Blockchain Technology

  • Increased Trust and Transparency: Blockchain’s decentralized and transparent nature fosters trust among participants in various transactions and processes.
  • Reduced Costs and Enhanced Efficiency: Blockchain can eliminate intermediaries, automate processes, and reduce administrative overhead, leading to cost savings and efficiency gains.
  • Improved Security and Data Integrity: Blockchain’s cryptographic algorithms and consensus mechanisms safeguard data against unauthorized access and manipulation, ensuring its integrity.

Limitations of Blockchain Technology

  • Scalability Challenges
  • Regulatory Uncertainty
  • Energy Consumption Concerns

The Future

Blockchain technology has incredible potential and the ability to transform various industries, and our daily lives.

While challenges remain, such as scalability and regulatory uncertainty, the benefits of blockchain are undeniable.

As the technology matures and adoption grows, we can expect to see even more innovative applications that reshape the way we interact with the digital world.

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