Bitcoin was introduced in a 2008 whitepaper by “Satoshi Nakamoto,” whose real-world identity remains unknown. Nakamoto launched the network in January 2009 and stepped away from public involvement in 2010; development has since continued as an open-source, community-driven effort.

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Q: How does Bitcoin work in simple terms?

Users broadcast transactions to a global peer-to-peer network. Miners bundle those transactions into blocks and compete to solve a proof-of-work puzzle; the winning block becomes part of the blockchain, making its transactions effectively immutable. This design removes central control and relies on cryptography and economic incentives.

Q: What is Bitcoin's supply and issuance schedule?

Bitcoin’s maximum supply is 21,000,000 BTC. New BTC enter circulation as block rewards to miners, and that reward halves every 210,000 blocks (about four years) in an event called the “halving.” After the fourth halving on April 20, 2024, the block reward is 3.125 BTC; the next halving is expected in 2028. The final coins are projected to be mined around the year 2140.

Q: How often are blocks produced and what is “difficulty adjustment”?

Bitcoin targets a new block roughly every 10 minutes. To keep that average despite changes in mining power, the network automatically adjusts mining difficulty every 2,016 blocks (about once every two weeks).

Q: What consensus mechanism and hash algorithm does Bitcoin use?

Bitcoin uses proof-of-work (PoW). Miners perform computations to find a hash below a protocol-defined target using the SHA-256 hashing algorithm, securing the network and making past transactions prohibitively expensive to alter.

Q: What was Taproot and why did it matter?

Taproot was a 2021 soft-fork upgrade that bundled BIPs 340/341/342. It introduced Schnorr signatures, MAST (Merkelized Abstract Syntax Trees), and Tapscript to improve efficiency, privacy, and flexibility for advanced spending conditions.

Q: What are Ordinals and Runes on Bitcoin?

Ordinals (2023) enabled on-chain inscriptions of data tied to individual satoshis, while Runes (launched at the 2024 halving) is a fungible-token protocol designed for simpler, UTXO-friendly token issuance on Bitcoin. Activity from these protocols has at times increased block space demand and fees.

Q: What is the Lightning Network?

Lightning is a layer-2 payment protocol where users open payment channels and settle many small transactions off-chain, using the base layer only for opening/closing channels. This can enable faster, lower-fee payments while inheriting Bitcoin’s security on settlement.

Q: Are there Bitcoin ETFs?

Yes. On January 10–11, 2024, the U.S. SEC approved multiple spot Bitcoin exchange-traded products, allowing investors to gain BTC price exposure via regulated ETFs from issuers including BlackRock and Fidelity. Later in 2024, options on at least one spot BTC ETF were also approved.

Q: How are transaction fees determined and why do they vary?

Fees are market-based: users attach fees to transactions, and miners prioritize higher-fee transactions when block space is scarce. Periods of high on-chain activity - such as inscription or token-launch surges - can raise average fees until demand cools.

What is Bitcoin?

Bitcoin is a digital currency designed for the future.

As its adoption continues to grow globally, it becomes an essential addition to any investment portfolio seeking future-proof assets.

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Bitcoin's scarcity offers higher growth prospects than Gold or the S&P 500

No Control from central Banks

Strong potential for high returns

Secure Transactions

Frequently Asked Questions

How much is 1 BTC in USD?

The live price of 1 BTC updates regularly based on live market data. Use the converter above to see the current rate.

How much BTC can I get for 1 USD?

Prices change based on market activity. Use the converter above to check the current exchange rate for BTC.

How do I convert BTC to USD?

Use the converter at the top of this page. Enter any amount in BTC or USD to get the instant conversion.

How can I buy BTC?

You can buy BTC directly with your local currency at Bitcoin.com. Support for credit cards, bank transfers, and payment apps.

What affects the price of BTC?

The price of BTC changes based on supply, demand, trading volume, and overall crypto market trends.

What other cryptos can I convert?

Check out the respective converter pages for other major cryptocurrencies, or simply select an asset above.

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Bitcoin FAQ

Who created Bitcoin?

How does Bitcoin work in simple terms?

What is Bitcoin's supply and issuance schedule?

How often are blocks produced and what is “difficulty adjustment”?

What consensus mechanism and hash algorithm does Bitcoin use?

What was Taproot and why did it matter?

What are Ordinals and Runes on Bitcoin?

What is the Lightning Network?

Are there Bitcoin ETFs?

How are transaction fees determined and why do they vary?

What is the difference between running a node and mining?

How is Bitcoin stored?

Can Bitcoin be changed or upgraded?

What is the difference between Bitcoin (BTC) and Bitcoin Cash (BCH)?

What happens when all Bitcoins are mined?

Is Bitcoin legal and where can I get exposure?