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Jun 06, 22  |  ibrahim imran

How to Know Blockchain: Complete Overview of Blockchain Technology

Simply said, blockchain technology is a decentralized, distributed ledger that tracks the provenance of digital assets. The data on a blockchain can't be changed by design, making it a real disruptor in industries like payments, cybersecurity, and healthcare. Of course this doesn’t answer all the questions people have regarding blockchain. So, if you’re wondering how to know Blockchain completely, you have come to the right place. 

In this article, we will explain what it is, how it is used, and its history.

Blockchain Defined 

People who wonder how to know Blockchain are bombarded with difficult definitions. First, let's define blockchain, then give an example.

By combining decentralization and cryptographic hashing, blockchain ensures that the history of every digital asset is unalterable and transparent.

Blockchain is like a Google Doc. Instead of being replicated or transferred, a shared document is scattered. Everyone has simultaneous access to the document through a decentralized distribution network. No one is locked out while waiting for another party to make changes, and all document modifications are documented in real time.

Blockchain is more complicated than Google Doc, but the comparison emphasizes three fundamental concepts.

Blockchain (Short Overview)

A blockchain is a database that joins encrypted data blocks to create a chronological single-source-of-truth.

Digital assets are dispersed instead of replicated or relocated, creating an immutable record.

Decentralized assets provide real-time, transparent public access.

A transparent log of changes maintains the document's integrity and develops trust.

Blockchain's intrinsic security and public ledger make it perfect for almost every sector.

Blockchain minimizes risk, eliminates fraud, and enables scalable transparency for many applications.

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How Does it Work?

Blockchain knowledge doesn't end with the aforementioned definition. 

A blockchain allows people to transmit essential data in a safe, tamper-proof way, especially if they don't trust each other.

Blockchain has blocks, nodes, and miners.


Each chain block has three elements:

  • Block's data.
  • 32-bit nonce. Randomly generated nonces are used to create block header hashes.
  • Nonce's 256-bit hash. It starts with many zeros (i.e., be extremely small).

A nonce generates a chain's first cryptographic hash. Unless mined, block data is signed and linked to the nonce and hash.


Miners add blocks via mining.

Every block in a blockchain has its own nonce and hash, but it also refers to the hash of the previous block, making mining difficult on large chains.

Miners use specialised software to generate a valid hash using a nonce. There are four billion nonce-hash combinations to mine before discovering the right one. When this happens, miners assume they've found the "golden nonce" and add their block to the chain.

Any change to an older block requires re-mining of all subsequent blocks. This makes blockchain manipulation difficult. Identifying golden nonces takes time and computing power.

All network nodes acknowledge a successfully mined block, and the miner is paid.


Blockchain technology is decentralised. One computer or entity can't own the chain. The chain's nodes constitute a distributed ledger. Nodes are technological devices that keep the blockchain and network operational.

Every node has its own copy of the blockchain, and any freshly mined block must be approved by the network algorithmically. Blockchains are transparent, thus every ledger action can be evaluated. Each participant is given an alphanumeric ID number to track transactions.

Combining public data with checks and balances builds blockchain integrity and user confidence. Blockchains scale technological trust.

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Blockchain's Technological Rise Begins With Cryptocurrencies

The most well-known (and perhaps most contentious) application of blockchain is in cryptocurrency. Cryptocurrencies, such as Bitcoin, Ethereum, and Litecoin, are digital currencies (or tokens) that may be used to purchase goods and services. Crypto, which functions similarly to a digital form of cash, may be used to buy everything from lunch to a new house. Unlike cash, crypto relies on blockchain to serve as both a public ledger and a stronger cryptographic security mechanism, ensuring that online transactions are always recorded and protected.

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How to Know Blockchain? Understand Crypto! 

Blockchain technology records and secures all cryptocurrency transactions. Bitcoin may be used to buy everything from groceries to cars and residences. It can be acquired through digital wallets or trading platforms, then digitally transferred after a purchase, with the transaction and new owner recorded on the blockchain. All cryptocurrency transactions are recorded in a public ledger and encrypted using cryptography, creating an irrefutable, timestamped record.

Bitcoin accounts for the vast bulk of the $1.6 trillion market valuation of 6,700 cryptocurrencies worldwide. One Bitcoin is now worth $60,000, therefore their popularity has skyrocketed.

Why are Cryptocurrencies Popular?

Blockchain's security makes theft harder because each coin has a traceable number connected to one owner.

Crypto eliminates the need for bespoke currencies and central banks. Blockchain allows crypto to be sent to anybody, anywhere without currency conversion or central bank meddling.

Speculators drove up the price of crypto, especially Bitcoin, making early adopters billionaires. Some detractors believe that speculators aren't considering crypto's long-term benefits.

Large enterprises are embracing blockchain-based digital currency for payments. Tesla said it will invest $1.5 billion in Bitcoin and accept it as payment in 2021.

Blockchain-based digital currencies have serious objections. First, cryptocurrency is unregulated. Few nations have defined procedures to regulate bitcoin. Speculators also make cryptocurrencies volatile. In 2016, one bitcoin was worth $450. In 2018, it reached $16,000 per token, plummeted to $3,100, and is now above $60,000. Due to instability, some people have grown rich while others have lost tens of thousands.

Digital currency' future is uncertain. For now, blockchain's meteoric rise seems more real than hyped. Blockchain has possibilities beyond Bitcoin despite being a fledgling, risky sector.


As you can see, we’ve presented everything to help you with your journey on how to know blockchain. Now that you’re aware of what it is, how it works, and the nitty gritty details regarding it, the decision of you or your business transitioning towards blockchain technology comes down to you. 

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