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About Bitcoin




Circulating supplyQuestion mark circle icon

Maximum supplyQuestion mark circle icon

Launch date



₿ or ฿

3 Jan 2009


ExplorerQuestion mark circle icon

White paperQuestion mark circle icon

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Layer 2Question mark circle icon

Next hHalvingQuestion mark circle icon

PDF (9 pages)



2028-04-17 (est.)

BTC market info

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High (24h)

Low (24h)

Price cChange (24h)

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Bitcoin FAQ

Find below the answers to the most common questions about Bitcoin. When available, we give you links to in-depth articles for further reading.

Bitcoin is the first successful cryptocurrency, a form of digital money. It is based on decentralized peer-to-peer network of computers that enables the online transfer of digital value in a way that is uncensorable and that doesn't require the intervention of a centralized entity. To learn more, read our introduction to Bitcoin.

Right now, 1 Bitcoin is worth HK$ .

Right now, 1 Hong Kong dollar is equal to BTC.

Mining is the act of running and securing the Bitcoin blockchain. Miners run the Bitcoin protocol on computers (nodes) that compose the Bitcoin network. They compete to verify each new block of transaction by solving increasingly complex mathematical problems. The winner receives newly created bitcoins in reward, having therefore mined Bitcoin.

There are two main dates related to the creation of Bitcoin. The first one is 31 October 2008, when the Bitcoin white paper was first published. The second one is 3 January 2009, when the Bitcoin network came online.

Bitcoin was created by an anonymous developer or group of developers known under the pseudonym Satoshi Nakamoto, who stopped all online activity and disappeared in 2010. Nobody has ever been able to find Satoshi's real identity.

Bitcoin's value is based on two main pillars: a finite supply and an exponentially increasing difficulty to create new coins. This built-in scarcity gives Bitcoin value, in addition to its usefulness as a decentralized value transfer network. These features make Bitcoin an interesting investment opportunity and storage of value on the long term, as long as people keep using it of course. Its price being highly volatile, it is also a great asset for short-term speculators. Like any investments, it is risky and you should only invest after having carefully studied Bitcoin.

Bitcoin with an uppercase "B" refers to the name of the blockchain and the cryptocurrency in general. We use bitcoin with a lowercase "b" when talking about the unit of account, for instance "you own 2 bitcoins".

The maximum number of bitcoins that can ever be created, which is hard coded in Bitcoin's code, is 21,000,000 BTC.

A halving is an event that occurs every 210,000 blocks of the Bitcoin blockchain. It divides by two the amount of Bitcoin created in reward for each successfully mined block. To learn more, read our article on Bitcoin hal3vings.

It is estimated that it will take a century until the last Bitcoin is mined. Some calculations find the year 2140 for that date.

Lightning is a Layer 2 technology that allows to make bitcoin transactions off the main Bitcoin blockchain, enabling cheaper and faster transactions. Transactions can then be recorded in bulk on the main blockchain, saving this way precious network resources.

DCA (Dollar-Cost Averaging) consists in investing a fixed amount of money into Bitcoin at a fixed time interval, in order to smooth out the purchase price on the long run.

The price of Bitcoin refers to a global price that is calculated by making a volume-weighted average of its real-time price on many different exchange platforms where it is traded, such as Binance, Bybit, OKX, Coinbase, Kraken, etc.

A satoshi (or "sat") is the smallest unit of a bitcoin, just like a cent is the smallest unit of a dollar.

There are 100,000,000 satoshis in 1 bitcoin.

You never store Bitcoin in itself. Instead, you store the private key giving you access and control over a Bitcoin address. That key is stored in a wallet, which provides an interface to use it. To learn more, read our in-depth guide on storing crypto assets.

To send BTC, you use a Bitcoin wallet like Bridge Wallet where you will choose the amount to send and the destination address. Confirm and send, that's it!

Sending Bitcoin is not free, each transaction has a fee paid to the miner that will process and validate the transaction. That cost changes all time, it depends on the current demand as well as the amount of data consumed by the transaction. To see the current cost of making a Bitcoin transaction, see the "transaction fees" section on To learn more, read our article on how do Bitcoin transactions work.

You can buy Bitcoin with us here from Hong Kong by sending us bank transfers in HKD, avoiding that way unnecessary currency exchange fees. For more information, have a look at our step-by-step tutorial on how to buy Bitcoin.

You can swap Bitcoin with us by clicking here against one of the cryptocurrencies that we support, using any self-custodial Bitcoin wallet. For more information, have a look at our step-by-step tutorial on how to swap Bitcoin.

To cash out Bitcoin with us, you simply need to transfer your crypto to our address. We'll convert your BTC in HKD, then transfer the funds to your bank account in Hong Kong. For more information, have a look at our step-by-step tutorial on how to sell Bitcoin.

You can use a mobile Bitcoin wallet (like Bridge Wallet) to spend your coins at any business that accepts Bitcoin as a payment method. You can find such merchants on

Satoshi Nakamoto, the creator of Bitcoin, owns the largest amount of Bitcoin with an estimated 1,000,000 BTC. This massive amount (commonly known as Satoshi's coins) was worth close to $70 billion at Bitcoin's all-time high of November 2021. This wealth would make Satoshi Nakamoto one of the top 50 richest persons in the world, although that treasure has remained untouched to this day.

A Bitcoin exchange-traded fund (ETF) is a type of security that allows investors to gain exposure to the price of Bitcoin on regular stock exchanges. A Bitcoin spot ETF tracks the current market price of actual bitcoins held by the fund manager, while a Bitcoin futures ETF tracks the price that people think Bitcoin will reach at a future date.

BTC-HKD conversion table

BTC iconBitcoinHKD iconHong Kong dollar
₿ 1 BTC=
₿ 0.5 BTC=
₿ 0.1 BTC=
₿ 0.05 BTC=
₿ 0.01 BTC=
₿ 0.005 BTC=
₿ 0.001 BTC=
₿ 0.0005 BTC=
₿ 0.0001 BTC=
₿ 0.00005 BTC=
₿ 0.00001 BTC=
HKD iconHong Kong dollarBTC iconBitcoin
HK$ 1 HKD=
HK$ 5 HKD=
HK$ 10 HKD=
HK$ 15 HKD=
HK$ 25 HKD=
HK$ 50 HKD=
HK$ 100 HKD=
HK$ 1,000 HKD=
HK$ 10,000 HKD=
HK$ 100,000 HKD=
HK$ 1,000,000 HKD=

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