Introduction to Bitcoin and Blockchain

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Questions and Answers

What is Bitcoin?

  • A traditional currency that is managed by a central authority.
  • A centralized digital currency that operates without the need for a central authority or intermediary, like a bank.
  • A decentralized digital currency that operates without the need for a central authority or intermediary, like a bank. (correct)
  • A type of cryptocurrency that is only used for online transactions.

Who introduced Bitcoin?

Satoshi Nakamoto

Bitcoin transactions are recorded on a blockchain.

True (A)

Which of the following is NOT a key concept of Bitcoin?

<p>Centralization (B)</p> Signup and view all the answers

What is the process by which transactions are validated and new Bitcoins are created called?

<p>Mining</p> Signup and view all the answers

What are the two main types of Bitcoin wallets?

<p>Hot wallets and Cold wallets (A)</p> Signup and view all the answers

Match the following terms with their definitions:

<p>Public Key = Used to access and send Bitcoin Private Key = Shared with others to receive Bitcoin Hot Wallet = Offline wallets, such as hardware wallets or paper wallets Cold Wallet = Online wallets connected to the internet (e.g., mobile apps)</p> Signup and view all the answers

Flashcards

What is Bitcoin?

A decentralized digital currency operating without a central authority.

What is blockchain?

A transparent and immutable record of all Bitcoin transactions.

What is Bitcoin mining?

The process of verifying transactions and creating new Bitcoins.

What are hot wallets?

Online wallets connected to the internet.

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What are cold wallets?

Offline wallets, such as hardware or paper wallets.

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What is a public key?

A unique identifier used to receive Bitcoin.

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What is a private key?

A secret key used to access and send Bitcoin.

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What is transparency in Bitcoin?

Transactions are publicly recorded on the blockchain making them transparent.

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What is security in Bitcoin?

Strong encryption methods protect the Bitcoin network.

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What is a limited supply of Bitcoin?

There will only ever be 21 million Bitcoins, making inflation unlikely.

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What is borderless functionality of Bitcoin?

Bitcoin allows for global transactions directly between users, bypassing traditional intermediaries.

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What is volatility in Bitcoin?

The value of Bitcoin can fluctuate significantly, making it risky.

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What are scams in Bitcoin?

Users can be tricked into giving up their Bitcoins through fraud or phishing.

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What is regulatory uncertainty in Bitcoin?

Governments are still figuring out how to regulate Bitcoin, leading to uncertainty.

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What are cryptocurrency exchanges?

Platforms where you can buy and sell Bitcoin.

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What are peer-to-peer platforms for Bitcoin?

Direct buying or selling Bitcoin between individuals.

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What are payment methods for Bitcoin?

Traditional bank transfers, credit/debit cards, or other cryptocurrencies.

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What are hardware wallets?

The safest option for storing Bitcoin offline.

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How do you send Bitcoin?

The recipient's public key is needed to send them Bitcoin.

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How are Bitcoin transactions verified?

Transactions are broadcast to the network for verification by miners.

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What are transaction fees in Bitcoin?

Users pay small fees to miners for processing transactions.

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What are confirmations in Bitcoin?

The number of blocks added after a transaction is confirmed.

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What are online purchases using Bitcoin?

Paying for goods and services online.

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What is Bitcoin investment?

Investing in Bitcoin as a digital asset.

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What are remittances with Bitcoin?

Sending money across borders at lower cost.

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What is Bitcoin as a hedge against inflation?

Using Bitcoin to protect against inflation in volatile economies.

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Study Notes

Bitcoin Introduction

  • Bitcoin is a decentralized digital currency, operating without a central authority (like a bank).
  • Introduced in 2009 by Satoshi Nakamoto.
  • Relies on blockchain technology for transparent and immutable transaction records.
  • Key Concepts: Decentralization (no single entity controls it), peer-to-peer network (transactions directly between users).

Bitcoin's Structure and Function

  • Blockchain: A distributed ledger where transactions are grouped into blocks, linked chronologically. Each block includes a list of verified transactions and a reference to the previous block.
  • Mining: The process of validating transactions and adding new blocks to the blockchain. Miners solve cryptographic puzzles for rewards (new Bitcoins).
  • Bitcoin Wallets: Used to store and manage Bitcoin.
    • Hot Wallets: Online wallets connected to the internet.
    • Cold Wallets: Offline wallets (e.g., hardware wallets, paper wallets), considered more secure.
  • Keys:
    • Public Key: Shared to receive Bitcoin.
    • Private Key: Kept secret for accessing and sending Bitcoin.

Bitcoin Benefits and Risks

  • Benefits:
    • Transparency: Transactions are publicly recorded.
    • Security: Strong encryption protects the network.
    • Limited Supply: Only 21 million Bitcoins can exist, reducing inflation risk.
    • Borderless: Enables global transactions without intermediaries.
  • Risks:
    • Volatility: Bitcoin's value fluctuates significantly.
    • Scams: Users are vulnerable to fraud and phishing.
    • Regulatory Uncertainty: Government restrictions may apply.

Buying/Selling and Using Bitcoin

  • Bitcoin can be purchased through cryptocurrency exchanges (e.g., Coinbase, Binance).
  • Peer-to-peer platforms also exist.
  • Payment methods include bank transfers, credit/debit cards and other cryptocurrencies.
  • Bitcoin wallets secure and manage bitcoins.
  • Transactions are verified by miners for a fee.
  • Transactions require confirmations, signifying successful processing.

Real-World Applications of Bitcoin

  • Online purchases.
  • Investment (seen as digital gold by some).
  • Remittances (sending money internationally with reduced fees).
  • Hedging against inflation (in countries with unstable currencies).

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