Bitcoin: The First Cryptocurrency

Course Content
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What is blockchain
About Lesson

Hello again, learners! Now that we’ve covered what cryptocurrencies are, let’s delve into the
first and most famous one: Bitcoin.
The Birth of Bitcoin
Bitcoin was created in 2009 by an anonymous person (or group of people) using the
pseudonym Satoshi Nakamoto. It was the first cryptocurrency and remains the most valuable
and popular one today. Bitcoin was introduced as a solution to the problem of double-spending
without the need for a central authority.
Understanding Bitcoin
Bitcoin is a digital currency that you can send or receive anywhere in the world. It operates on
a technology called blockchain which we’ve learned about in our previous module. Here are
some key features of Bitcoin:
1. Decentralization: Bitcoin is not controlled by any government, bank, or individual. Its
system is run by a network of computers (called nodes) distributed around the world.
2. Limited Supply: There will only ever be 21 million bitcoins. This scarcity is built into
the system to mimic the finite supply of gold and other precious metals, which helps to
maintain its value.
3. Pseudonymity: While Bitcoin transactions are transparent and traceable on the
blockchain, the identities of the people conducting the transactions are not. This
provides a level of privacy, though not total anonymity.
4. Divisibility: Each Bitcoin can be divided into 100 million smaller units, called satoshis.
This makes it possible to buy a fraction of a Bitcoin, making it accessible to more
people.
How Bitcoin Transactions Work
When you send or receive bitcoins, the transaction is broadcast to the entire Bitcoin network.
Miners (people who use their computers to validate and record transactions on the Bitcoin
blockchain) then add the transaction to the blockchain. Once a transaction is added to the
blockchain, it can’t be reversed or tampered with. This makes Bitcoin transactions secure and
trustworthy.
Why Bitcoin Matters
Bitcoin has opened a new era of financial innovation. It has shown the world that it’s possible to
have a form of money that is secure, scarce, and doesn’t require a central authority. Bitcoin’s
success has also sparked the creation of thousands of other cryptocurrencies, collectively
known as altcoins.
In the next section, we’ll explore these altcoins and see how they differ from Bitcoin. Keep
learning, and you’ll soon be a cryptocurrency pro!
Remember, every step you take in learning brings you closer to understanding the exciting
world of cryptocurrencies. Keep going!

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