# What is Bitcoin?

By [Untitled](https://paragraph.com/@0x755d73f02ac80797eebfedd50bc1ff831977f877) · 2023-07-21

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Bitcoin is unique because it is not controlled by any central authority, such as a government or financial institution. Instead, it relies on a network of computers (nodes) that validate and record transactions on a public ledger known as the blockchain.

Key features of Bitcoin include:

1.  **Decentralization**: No single entity controls Bitcoin. Transactions and the issuance of new Bitcoins are collectively managed by the network.
    
2.  **Limited Supply**: There will only ever be 21 million Bitcoins in existence, making it a deflationary currency. This scarcity is programmed into the protocol.
    
3.  **Security**: Transactions are secured through cryptographic techniques, ensuring the integrity and authenticity of the data.
    
4.  **Pseudonymity**: Users can hold Bitcoin in wallets identified by alphanumeric addresses rather than personal information, providing some level of privacy.
    
5.  **Global Transactions**: Bitcoin can be sent or received across borders without the need for intermediaries like banks, and transaction fees are typically lower compared to traditional banking systems.
    
6.  **Volatility**: Bitcoin's value is known for experiencing significant price fluctuations. This has made it both a speculative investment and a potential hedge against inflation.
    

People use Bitcoin for various purposes, including online purchases, investments, remittances, and as a store of value. However, its adoption and acceptance as a mainstream form of payment and store of value have been evolving over the years.

Keep in mind that the cryptocurrency space is constantly changing and evolving. For the most up-to-date information, I recommend checking reliable sources or news outlets to see how the Bitcoin ecosystem has developed beyond my last update.

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*Originally published on [Untitled](https://paragraph.com/@0x755d73f02ac80797eebfedd50bc1ff831977f877/what-is-bitcoin)*