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What Is Bitcoin? Introduction To A Digital Currency! Free Bitcoins?! (#33)




What Is Bitcoin? An Introduction to a Digital Currency

What Is Bitcoin?

Bitcoin is a digital currency (cryptocurrency) with no physical form — you can't hold it in your hand. The gold-coin-with-a-"B" imagery commonly associated with it is purely symbolic; it doesn't represent anything physical.

Bitcoin runs on a peer-to-peer transaction system, meaning transactions happen directly between parties without a bank or other intermediary in the middle.

Worth correcting a common misconception: Bitcoin transactions being peer-to-peer doesn't mean there's no risk of losing money. People genuinely do lose money with Bitcoin — through scams, lost or stolen private keys (with no way to recover access), exchange hacks, and simple price volatility. Removing a middleman changes how a transaction works, not whether the money involved is safe.

Who Founded Bitcoin, and When?

Bitcoin was introduced in 2008 (with the network launching in 2009) by a person or group operating under the pseudonym Satoshi Nakamoto. Their true identity remains officially unconfirmed to this day — a mystery that's persisted for over 15 years.

Worth knowing (as of 2026): there's been renewed speculation this year, including a New York Times investigation pointing toward cryptographer Adam Back (which he has denied) and a separate documentary reviving an older theory involving Hal Finney and Len Sassaman. None of these claims have been backed by the kind of cryptographic proof (like moving coins from Nakamoto's original wallets) that the crypto community would treat as definitive — so the identity remains, as of today, unconfirmed.

As for the theory that revealing their identity could lead to legal trouble — that's speculative and unverified. A more commonly discussed concern is that Nakamoto's wallets are estimated to hold over 1 million BTC (worth tens of billions of dollars), making personal safety and security a far more plausible reason for staying anonymous than any suggestion of illegal activity.

How Does Bitcoin Get Its Value?

Like fiat currency, Bitcoin has no inherent physical value — its price is driven largely by collective belief and, more concretely, by demand and supply dynamics. One structural factor worth knowing: Bitcoin has a fixed maximum supply of 21 million coins, built into its underlying code — unlike fiat currency, which can be printed without a hard limit. This scarcity is part of what many investors point to when discussing Bitcoin's long-term value proposition.

→ Related: What Is Fiat Currency?(#71)

Can You Still Get "Free" Bitcoin Through Mining?

This needs a significant update from how it may have looked in Bitcoin's earlier years. Bitcoin mining involves using computing power to validate transactions and earn new coins as a reward. In Bitcoin's early days, this was genuinely accessible on a home computer.

That's no longer realistic today. Bitcoin mining now requires highly specialized hardware (ASIC miners) and enormous amounts of electricity, largely dominated by large-scale industrial mining operations. For an individual today, home mining is generally not profitable once you account for hardware and electricity costs — "free" isn't really an accurate way to describe it anymore, even though technically no money changes hands to acquire the coins themselves.

→ Related: What Is Bitcoin Mining? Get Free Bitcoins!(#34) — worth a much closer look at how mining actually works today.

Can Bitcoin Be Hacked?

This deserves more nuance than a flat yes or no. Bitcoin's underlying blockchain protocol — the distributed ledger system it runs on — has a strong security track record and has not itself been successfully hacked at the protocol level.

However, that's a different question from whether Bitcoin holders can lose their coins to hacking — and the answer there is clearly yes. Cryptocurrency exchanges have been hacked repeatedly over the years, with billions of dollars in losses across various incidents. Individual wallets get compromised through phishing scams, malware, and stolen private keys. So while the core Bitcoin network itself is genuinely resilient, treating Bitcoin as something that "can't be hacked" in a broader sense is misleading — the security of your own coins depends heavily on how (and where) you store them.

That covers the basics of what Bitcoin is, how it works, and a few common misconceptions worth clearing up. Thanks for reading.

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