What is Bitcoin

In one sentence, bitcoin is a form of digital currency.

In many sentences, bitcoin can be described as follows:

A peer-to-peer cryptocurrency

  • Bitcoin is peer-to-peer (P2P) i.e. transacted between one party and another, and therefore does not require the intervention of an intermediary such as a bank or clearinghouse.
  • It is a digital currency that relies on high-level cryptographya method of storing and transmitting data in a particular form so that only those for whom it is intended can read and process it to maintain its security and function in the real world, hence the term cryptocurrency.

A system based on open-source code

  • Bitcoin is open source, which means anyone can inspect, modify and improve upon the code that runs Bitcoin.
  • It also means no one single entity can control what and how bitcoin should run.

A decentralised and distributed network

  • Bitcoin is decentraliseda network design that is driven by peer-to-peer interaction and isn’t managed or governed by a central party or authority and therefore cannot be controlled or shut down by any government or third party.
  • It is a distributed network located all over the world and not in one single location, and hence does not have a single point of failure.

A transparent public ledger

  • Bitcoin also serves as an open and transparent public ledger known as the blockchain that keeps a record of all bitcoin transactions that ever took place since its inception in 2009.
  • It is accessible by anyone via the internet 24 hours a day, 7 days a week.
  • The Bitcoin network never sleeps, and the blockchain is by virtue secure and immutable – it cannot be altered or modified.

Ledger hardware wallet

For a quick summary of what bitcoin is, watch the following short video uploaded by weusecoins.com.

We will next learn more about the enigmatic person who created it.

Who Created Bitcoin?

Bitcoin was created by Satoshi Nakamoto.

“Satoshi Nakamoto is supposedly a man born on 5th April 1975 and living in Japan. However, some speculations describe Nakamoto as a person of Caucasian descent living in the United States and a number of European countries.”

No one knows who Satoshi Nakamoto is1. It could be a man, a woman, a collective group of programmers, an intergalactic space traveller from the future, or simply AI on a computer…no one really knows.

All we know is, Satoshi Nakamoto is a pseudonyma fictitious name used to conceal the real identity of a person.

Nakamoto claimed to have started working on the bitcoin code in 2007. In October 2008, Nakamoto published a whitepaper titled Bitcoin: A Peer-to-Peer Electronic Cash System on the cryptography mailing list at metzdowd.com, with the following remark:

I’ve been working on a new electronic cash system that’s fully peer-to-peer, with no trusted third party. The paper is available at: http://www.bitcoin.org/bitcoin.pdf. The main properties are:

  • Double-spending is prevented with a peer-to-peer network.
  • No mint or other trusted parties.
  • Participants can be anonymous.
  • New coins are made from Hashcash style proof-of-work. The proof-of-work for new coin generation also powers the network to prevent double spending.

Satoshi Nakamoto, 01 November 2008


“Interesting to note, embedded in the transaction detail of the genesis block, was the text: The Times 03/Jan/2009 Chancellor on brink of second bailout for banks. An allusion to the problem that bitcoin was created to solve, perhaps?”

In January 2009, Nakamoto released the first bitcoin software that launched the Bitcoin network and the first units of the bitcoin cryptocurrency, denoted by the currency code BTC and the symbol ₿. The first bitcoin was released into circulation on 3rd January 2009 through a process known as miningthe process of validating bitcoin transactions by deploying computational power on the Bitcoin network and in return for the expense of power and electricity, miners are rewarded with newly minted bitcoin as defined by the Bitcoin generation algorithm.. The first block, known as the genesis block of bitcoin or block number 0, carried a reward of 50 bitcoin. We will learn more about this in How Bitcoin Mining Works and Bitcoin Supply Parameters.

Bitcoin has now been running for over a decade and has revolutionised cross-border payments around the world in a way no monetary systems ever did. It led to the development of a series of other cryptocurrencies that adopted its blockchain technology and changed the way humankind operate and transact value.


The ISO 4217 currency code for Bitcoin is XBT. However, at the moment it is an unofficial code according to the ISO 4217 standard. The unit name BTC is also commonly used to represent one bitcoin, but it violates ISO 4217 because it begins with “BT”, the country code of Bhutan. Bhutan does not actually use the code BTC for any currency, and XBT has not yet defined which unit it represents, just that it represents some unit of bitcoin, so the Bitcoin community is likely to continue using mainly BTC as a unit name and currency code for some time.

In early 2011, Satoshi Nakamoto passed the reins completely over to Gavin Andresen, a computer science degree graduate from Princeton who had worked full-time alongside Nakamoto on bitcoin since December 2010. While Gavin Andresen was a known figure within the bitcoin community space, Nakamoto’s identity remains unknown even to Andresen.

Nakamoto also transferred several related domains to a few prominent members of the bitcoin community, and was never heard of again.

In reality, it doesn’t really matter who Satoshi Nakamoto is, because the Bitcoin network runs on a system regulated by the universal laws of Mathematics.

Similarly, it may be nice to know that Sir Isaac Newton had formulated the laws of motion and universal gravitation, but in reality we do not need to know Mr Newton personally to fully appreciate the laws of gravity on a daily basis. Gravity happens regardless of whether you have heard of Mr Newton or not.

Likewise, Bitcoin remains operational and fully functional regardless of whether Nakamoto’s identity is known or not.

What is significantly more important is the invention that Satoshi Nakamoto had left behind and how it is serving mankind…

…how bitcoin helps citizens of impoverished nations deal with failing currencies and hyperinflation.

…how bitcoin helps the unbanked adult population participate in the world marketplace economy, without needing a bank account they may not eligible for. Or simply,

…how bitcoin allows people to send money quickly and at very low cost, regardless of geographical distance, time of day, and day of week.

what is bitcoin
The Bitcoin logo, signified by a cap B with vertical lines like those on a dollar sign.

The Bitcoin network now runs autonomously around the world, free from centralised and authoritarian control.

Being truly decentralised and distributed in nature, bitcoin cannot be shut down and continues to thrive and flourish in a world that needs its technology. And as has been proven over the course of human civilisation, technologies that benefit mankind will always persevere, prevail and push its way into adoption.

kathryn haun bitcoin
“…the government realized they can’t shut down bitcoin. There’s simply no way. With these technologies, once the genie is out of the bottle you can’t put it back in…”

KATHRYN HAUN, US Federal Prosecutor



In a world where corrupt financial systems are abused and exploited, political influence that seeks totalitarian power will not favour a phenomenon that upsets the status quo. It is probably to Bitcoin’s interest that its inventor was never identified other than by a pseudonym.

what is bitcoin

How Bitcoin Works

Nevertheless, should Satoshi Nakamoto cease to exist, the Bitcoin network will continue to operate and run as it should. And that is Satoshi Nakamoto’s contribution to the world.




What Is Bitcoin

  • Bitcoin is a decentralised peer-to-peer cryptocurrency based on an open-source code.
  • Bitcoin is a technology that runs through a distributed network, much like the internet.
  • As such, it cannot be controlled or shut down by any party.
  • The bitcoin blockchain is an open and public ledger that records every bitcoin transaction ever made since its inception. It is immutable and cannot be altered.

Who Created Bitcoin

  • Bitcoin was created by Satoshi Nakamoto.
  • Satoshi Nakamoto remains a pseudonym that represents the unknown and unidentified entity who created bitcoin.
  • Satoshi Nakamoto’s identity is irrelevant and does not affect bitcoin’s function or ability to function in the world today.
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Ledger Nano X - The secure hardware wallet
Ledger Nano X - The secure hardware wallet