Blockchain, an innovative and decentralized database or ledger, plays a vital role in today’s digital world. It allows for secure data transmission through complex encryption systems, and it is administered by all participants rather than a central authority. But why do we need blockchain? Let’s explore this captivating technology together.

The Need for Blockchain

Essentially, blockchain serves as a linked information block storage system. To illustrate its functionality, let’s imagine you want to send money to a friend. Traditionally, you would contact your bank for the transaction. However, with blockchain, the process becomes decentralized and eliminates the need for a third party like a bank.


The Problem with Third Parties

When transferring money, all you need is to enter the transaction information into a register. However, the catch is that the entry needs to be made in someone else’s registry. This raises concerns about potential errors or manipulation by third-party intermediaries. What if the banker makes a mistake or intentionally alters the transaction? This is where blockchain comes in as the solution.

Understanding How Blockchain Works

At its core, blockchain is a method of maintaining secure transactions. Imagine a group of individuals who choose to forego traditional banking systems. They maintain each other’s account details anonymously, without revealing their identities.


1. Empty Folder

Each member of the system begins with an empty folder. Gradually, they add pages to their folders, forming a registry to keep track of transactions.

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2. Transfers

Within the system, everyone is equipped with a blank page and pen, ready to record any transaction. For instance, if person 2 wants to send $10 to person 9, they simply record the transaction on their blank page.


3. Transaction Tracking

Transactions continue to occur, and individuals record them until their pages are full. At that point, they add the page to their directory, create a new page, and repeat the process.


4. Start a New Page

When a page is added to the directory, its content must remain unchanged and consistent. To achieve this, the page’s content is sealed using a special function called hashing. This function takes data and outputs seemingly meaningless information that is difficult to reverse-engineer.


Sealing a page involves finding a specific number that, when combined with the transaction list and inputted into the hashing machine, produces a code with specific characteristics. Once the page is sealed, its authenticity can be verified by recalculating the hash.

Setting the Sealing Number

As each person’s page fills up, they calculate a sealing number to store in their directory. The first person to find the sealing number announces it to the others. Upon verification, everyone stamps their pages with the sealing number and adds them to their folders.


But why do individuals spend time calculating when they know someone else will report the sealing number? It’s because the first person to calculate and announce the number is rewarded with a free cryptocurrency, such as Bitcoin.

The Birth of Blockchain

Once the pages are archived, individuals create new blank pages and repeat the entire process indefinitely. This ongoing cycle of creating blocks of transactions and adding them to the chain forms the blockchain.

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In a nutshell, blockchain revolutionizes the traditional notion of centralized databases. It ensures trust, security, and transparency by eliminating the need for intermediaries. By understanding how blockchain works, we unlock its immense potential for transforming various industries.

This is blockchain, my friend—an incredible technology that empowers individuals and reshapes our digital landscape. To learn more about Caravansarai, the forefront of blockchain innovation, visit Caravansarai.