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Bitcoin is a decentralized digital currency created in 2008. Learn about its blockchain technology, recent market volatility, and how investors buy it.
Bitcoin is a decentralized digital currency that uses blockchain technology to enable peer-to-peer transactions without the need for a central authority like a bank or government [1]. Introduced to the public in 2008 by an anonymous developer or group known as Satoshi Nakamoto, it has since become the largest and most well-known cryptocurrency globally [1]. While the asset has gained significant traction among institutional investors, it remains subject to extreme volatility and regulatory scrutiny [2].
Key takeaways
The concept for Bitcoin was announced in October 2008 via a white paper titled "Bitcoin: A Peer-to-Peer Electronic Cash System," and the first block, known as the genesis block, was mined on January 3, 2009 [1]. The network functions on a blockchain, which is a distributed ledger storing information across many computers rather than a centralized server [1]. To validate transactions, a process called mining involves computers racing to solve a cryptographic puzzle; the first to solve it adds the next block of transactions and earns newly minted bitcoins as a reward [1]. This reward halves approximately every four years to slow the creation of new supply, dropping from 50 bitcoins per block in 2009 to 3.125 by April 2024 [1].
Bitcoin’s market performance has been characterized by significant fluctuations. The digital currency rose 75% between October 2024 and the end of January 2025, eventually peaking at an all-time high of $126,297.63 on October 5, 2025 [2]. However, the price subsequently collapsed, dropping to $60,000.01 by February 6, 2026—a decline of over 50% from its peak [2]. Despite this volatility, institutional interest has expanded, with major banks like Goldman Sachs and Morgan Stanley filing for or launching Bitcoin funds that have attracted millions in investments [2]. Proponents argue that the asset's fixed supply and institutional adoption will drive long-term value, while evidence regarding its effectiveness as an inflation hedge remains unclear [2].
Bitcoin represents a technological shift in how value can be stored and transferred, offering a financial system that operates independently of traditional intermediaries [1]. Its growing integration into Wall Street through ETFs and spot funds suggests it is becoming a permanent fixture in the financial landscape, even as regulators debate its oversight [2]. For consumers and investors, the distinction between its theoretical benefits as a hedge against scarcity and its practical reality as a highly volatile asset remains a critical factor in evaluating its role in a portfolio [1][2].
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