Podcast
Questions and Answers
What is the primary function of a Bitcoin address?
What is the primary function of a Bitcoin address?
What does the OP_CHECKSIG opcode do in Bitcoin Script?
What does the OP_CHECKSIG opcode do in Bitcoin Script?
Which of the following is NOT a property that blocks must have for them to be relayed?
Which of the following is NOT a property that blocks must have for them to be relayed?
What is the purpose of using a hash pointer in the Bitcoin ledger?
What is the purpose of using a hash pointer in the Bitcoin ledger?
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How is the time it takes for 95% of nodes to see a new block measured?
How is the time it takes for 95% of nodes to see a new block measured?
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Which operation does the opcode OP_EQUALVERIFY perform?
Which operation does the opcode OP_EQUALVERIFY perform?
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What is the total limit of bitcoins that can ever be created?
What is the total limit of bitcoins that can ever be created?
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What does a joint transaction in Bitcoin indicate?
What does a joint transaction in Bitcoin indicate?
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How often is the rate of block creation adjusted in the Bitcoin network?
How often is the rate of block creation adjusted in the Bitcoin network?
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What is the defined structure of a Bitcoin transaction primarily composed of?
What is the defined structure of a Bitcoin transaction primarily composed of?
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What ensures that someone cannot spend bitcoins they do not own?
What ensures that someone cannot spend bitcoins they do not own?
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What happens to the reward for miners approximately every 4 years?
What happens to the reward for miners approximately every 4 years?
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What is used in Bitcoin to create an anonymity feature?
What is used in Bitcoin to create an anonymity feature?
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Which mathematical algorithm is assumed to correspond to a Bitcoin address?
Which mathematical algorithm is assumed to correspond to a Bitcoin address?
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What is required from Alice before she sends Bitcoin to Bob?
What is required from Alice before she sends Bitcoin to Bob?
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What describes the nature of Bitcoin transactions in relation to user identity?
What describes the nature of Bitcoin transactions in relation to user identity?
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Study Notes
Creating Bitcoin & Regulations
- Bitcoin supply is limited to maintain currency value and prevent malicious currency generation.
- New Bitcoins are generated during the mining process, when a miner discovers a new block.
- Block creation rate is adjusted every 2016 blocks to regulate a constant 2 week period.
- Bitcoins generated per block decrease geometrically with a 50% reduction every 210,000 blocks.
- Total limit of Bitcoins is slightly less than 21 million.
- Miners will receive smaller rewards over time as the amount of Bitcoins generated per block decreases.
Bitcoin Transactions
- Bitcoin uses public key cryptography to verify digital signatures.
- Each user has one or more addresses with associated public and private key pairs.
- To send Bitcoins, the sender adds the recipient's address and transfer amount to a transaction message and signs it with their private key.
- The sender broadcasts the transaction message to the network for all users to verify.
Bitcoin Anonymity
- Bitcoin is permissionless, meaning users do not need to register their public and private keys.
- Transactions are linked to Bitcoin addresses, not usernames or identities.
- Bitcoin addresses are mathematically derived from public keys using algorithms like RSA.
- Users can have multiple Bitcoin addresses, making it difficult to track ownership and balances.
Bitcoin Script
- Bitcoin uses a script to verify transactions instead of just digital signatures and public keys.
- The script is designed to be efficient and secure, with a stack-based architecture for evaluating expressions.
- Opcodes like OP_DUP, OP_Hash160, OP_EQUALVERIFY, and OP_CHECKSIG help validate transactions.
Bitcoin Transaction Details
- Transactions must meet certain criteria to propagate through the network, including no conflicts, double spending, or special scripts.
- Block propagation latency is the time it takes for a new block to reach a majority of the network.
- Bitcoin transactions are designed to be secure and reliable, with robust consensus mechanisms and security features.
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