Bitcoin 價格

FAQ About Bitcoin (BTC)

• Who created Bitcoin?

  Bitcoin was created by Satoshi Nakamoto, a pseudonymous developer who published the Bitcoin whitepaper in 2008. Although Nakamoto’s true identity remains unknown, they launched the first Bitcoin block in 2009, marking the birth of blockchain technology. Since then, developers like Gavin Andresen and more than 750 contributors on GitHub have continued to enhance and maintain the Bitcoin network.

• How does Bitcoin mining work and what is the 'halving'?

  Bitcoin mining is the process of validating transactions and securing the network through Proof-of-Work. Miners compete to solve complex mathematical puzzles, and the first to succeed creates a new block on the blockchain. In return, they receive a block reward in newly minted Bitcoin. The halving is a programmed event that cuts this reward in half roughly every four years. This deflationary mechanism is built into Bitcoin’s code to control supply and ensure that the total number of Bitcoin will never exceed 21 million.

• When is Bitcoin halving?

  The last Bitcoin halving took place on April 20, 2024. A Bitcoin halving occurs roughly every four years, or every 210,000 blocks mined, as part of Satoshi Nakamoto’s original design to control supply. Each halving event cuts the block reward in half, slowing the creation of new Bitcoin and extending the reward cycle for miners. This built-in mechanism limits the total supply to 21 million coins, helping maintain scarcity and curb inflation.

• When is the next Bitcoin halving?

  Bitcoin halving is an event that takes place roughly every four years, or after 210,000 blocks are mined, reducing the rate at which new Bitcoin is created. The most recent halving occurred in April 2024, cutting the block reward to 3.125 BTC per block. The next Bitcoin halving is expected in 2028.

• How many Bitcoins are there?

  Bitcoin has a fixed maximum supply of 21 million coins, set by its original code to ensure scarcity and protect against inflation. New Bitcoin enters circulation through mining, a process where powerful computers validate transactions and add new blocks to the blockchain.
  
  The mining reward is halved roughly every four years, slowing the rate at which new coins are created. As of now, more than 19.7 million Bitcoin have been mined, leaving fewer than 2 million yet to be produced. This limited supply is one of the main reasons Bitcoin is often called digital gold.

• Is Bitcoin a good investment?

  Bitcoin is often considered a high-risk, high-reward investment due to its price volatility and evolving market dynamics. While it has delivered strong long-term returns, it remains vulnerable to sharp price swings, regulatory uncertainty, and potential security risks.
  
  Many investors view Bitcoin as a hedge against inflation and a tool for portfolio diversification, especially with the rise of crypto ETFs and growing institutional participation. However, it may not be suitable for everyone. Whether Bitcoin is a good investment ultimately depends on your risk tolerance, financial goals, and investment horizon.
  
  Always conduct your own research and consider consulting a licensed financial advisor before investing in cryptocurrency.

• How many Satoshis add up to 1 BTC?

  One Bitcoin (BTC) is equal to 100,000,000 Satoshis. A Satoshi, named after Bitcoin's mysterious creator Satoshi Nakamoto, allowing transactions to be made in extremely small fractions.
  
  This high level of divisibility makes Bitcoin practical for microtransactions, trading, and savings, even as its value continues to rise over time.

• Who is Satoshi Nakamoto?

  Satoshi Nakamoto is the pseudonymous individual or group responsible for creating Bitcoin. They wrote the original Bitcoin whitepaper and developed the first version of the Bitcoin software. Despite founding the entire cryptocurrency industry, Satoshi’s true identity remains one of the greatest mysteries in modern technology and finance.

• What is Satoshi Nakamoto's legacy?

  Regardless of their identity, Satoshi Nakamoto's legacy is undeniable. They solved the long-standing "double-spend problem" in digital currency without relying on a central authority, creating the first successful decentralized cryptocurrency and sparking the blockchain and Web3 revolution. The roughly 1.1 million Bitcoins mined by Satoshi, which have never been spent, stand as a silent monument to their creation, symbolizing both immense wealth and a lasting commitment to a trustless system.

• What is the Bitcoin whitepaper and why is it important?

  The Bitcoin whitepaper, titled "Bitcoin: A Peer-to-Peer Electronic Cash System," is the foundational document authored by the pseudonymous Satoshi Nakamoto. Published on October 31, 2008, it outlined the blueprint for the world’s first successful decentralized cryptocurrency. The paper is significant because it introduced a groundbreaking solution to the long-standing "double-spending problem" in digital currency, eliminating the need for a trusted central authority and laying the foundation for the entire cryptocurrency and blockchain industry.

• What is the Bitcoin Rainbow Chart?

  The Bitcoin Rainbow Chart is a long-term visual tool that uses a logarithmic scale to illustrate Bitcoin’s historical price trends. Each colored band represents a different valuation zone, ranging from blue (undervalued) to red (overvalued), helping users quickly gauge market sentiment over time.
  
  While it is not intended for precise price predictions, the Rainbow Chart provides a straightforward way to identify potential buying and selling zones based on Bitcoin’s past performance.

• What is BTC/USDT?

  BTC/USDT is a popular trading pair that reflects the exchange rate between Bitcoin (BTC) and Tether (USDT), a stablecoin pegged to the US dollar. It allows traders to buy or sell Bitcoin using USDT, offering a stable and convenient way to access the crypto market without converting to fiat currency.
  
  BTC/USDT is one of the most actively traded pairs on exchanges like Toobit, valued for its high liquidity and relative price stability.

• How does Bitcoin differ from traditional fiat currency?

  Traditional fiat currencies are issued and regulated by central authorities, such as central banks. Their supply and value can be influenced by government policies and broader economic conditions.
  
  Bitcoin, by contrast, operates without a central intermediary. It relies on cryptographic proof and network consensus to verify transactions and manage issuance, ensuring transparency, scarcity, and immutability.

• What are the main differences between Bitcoin and traditional finance (TradFi)?

  The Bitcoin whitepaper introduced it as a decentralized alternative to traditional finance. Key differences include:
  1. Decentralization vs. centralization: Bitcoin operates on a peer-to-peer network without central banks or intermediaries.
  
  2. Permissionless access: Anyone can use or build on Bitcoin without needing approval.
  
  3. Transparency: All transactions are publicly recorded on the blockchain.
  
  4. Fixed supply: Bitcoin's total supply is capped at 21 million, unlike fiat currencies, which can be printed indefinitely.

• What is the blockchain, and why is it essential for Bitcoin's trustworthiness?

  The blockchain is an immutable, time-stamped ledger of transactions that forms the foundation of Bitcoin's trust model.
  
  Structure: Transactions are grouped into blocks, and each new block is cryptographically linked to the previous one, creating a secure chain of data.
  
  Immutability: Once a block is added, its records are nearly impossible to alter. This ensures transparency, prevents double spending, and eliminates the need for a central authority.

• What is the role of mining in the Bitcoin system, and how does it ensure security?

  Mining is the competitive process in which nodes validate transactions and create new blocks. It serves two main purposes:
  
  Securing the network: Miners verify pending transactions, group them into blocks, and solve a computationally intensive puzzle known as Proof-of-Work. This process ensures that the blockchain remains tamper-proof and trustworthy.
  
  Issuing new Bitcoin: The first miner to solve the puzzle adds the block to the chain and earns newly created Bitcoins (the block reward) along with transaction fees. This economic incentive motivates miners to maintain network security.

• How do digital signatures secure a Bitcoin transaction and prove ownership?

  Digital signatures are a fundamental security mechanism in Bitcoin, ensuring that only the legitimate owner of funds can spend them.
  
  Mechanism: When sending Bitcoin, the user generates a unique digital signature for the transaction using their private key.
  
  Proof: This signature cryptographically verifies ownership without revealing the private key, eliminating the need for traditional identity verification and ensuring transactions are secure and non-repudiable.

• What does the decentralization of Bitcoin mean for governance and control?

  Decentralization means that no single entity, such as a bank, government, or corporation, controls the Bitcoin network.
  
  Governance: Any changes to Bitcoin's rules require consensus from the majority of network participants, including miners, nodes, and developers.
  
  Control: The distributed ledger, secured by Proof-of-Work, ensures that no one can arbitrarily inflate the money supply, reverse transactions, or shut down the network. This underpins Bitcoin's value as a censorship-resistant form of money.

• How does the Bitcoin whitepaper address the concept of anonymity? Is Bitcoin truly anonymous?

  The Bitcoin whitepaper explains anonymity through the use of public keys (Bitcoin addresses) but notes that this anonymity has limits.
  
  Pseudonymity: Transactions are public but display only Bitcoin addresses, not real-world identities. Users are therefore pseudonymous rather than fully anonymous.
  
  Limitation: If an address is ever linked to a person, all past and future transactions from that address can be traced. Bitcoin is transparent by design and not completely anonymous.

• Is Bitcoin a good store of value and why is it called 'digital gold'?

  Although the Bitcoin whitepaper presents it as an electronic cash system, Bitcoin’s properties—such as durability, portability, divisibility, uniformity, limited supply, and broad acceptability, have led many to consider it digital gold.
  
  Its fixed, deflationary supply makes it resistant to inflation, a key characteristic of a store of value. This perspective has become a central investment thesis, positioning Bitcoin as a potential hedge against traditional financial systems and a core asset in modern portfolios.

• How is the security of the Bitcoin network maintained long-term?

  The long-term security of Bitcoin is maintained through several key mechanisms.
  
  1. Proof-of-Work: This makes attacks on the network computationally infeasible.
  
  2. Economic incentives: Miners are rewarded for honest participation, promoting network integrity.
  
  3. Distributed network: Its decentralized structure removes any single point of failure.
  
  4. Cryptography: Strong cryptographic algorithms secure all transactions, and the network remains safe as long as honest nodes collectively control more computing power than potential attackers.

• Can Bitcoin scale to become a global payment system for everyday transactions?

  The original whitepaper acknowledges that scaling could be a challenge. It suggests that most transactions could occur off-chain through separate payment channels, with the main blockchain used to settle these channels. This concept laid the foundation for Layer 2 solutions like the Lightning Network, which enable fast, low-cost microtransactions and help address scalability for Bitcoin’s use as digital cash.