Bitcoin Block Structure Quiz

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Questions and Answers

Which section of a Bitcoin block contains the data for all of the transactions?

  • Transaction Data (correct)
  • Coinbase transaction
  • Block Header
  • Number of Transactions

What is the purpose of the Block Header in a Bitcoin block?

  • To link the blocks together
  • To indicate the number of transactions
  • To store the Coinbase transaction
  • To identify the block quickly (correct)

Which part of the Block Header is of particular interest to an investigator?

  • Previous Block Hash (correct)
  • Number of Transactions
  • Timestamp
  • Coinbase transaction

What does the timestamp in the Block Header indicate?

<p>The latest time the transactions were broadcast (B)</p>
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In what format is Bitcoin block data ordered?

<p>Little Endian (A)</p>
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What is the purpose of reversing the order of bytes in little endian format?

<p>To read the data correctly (A)</p>
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How is a number stored in big endian format?

<p>From left to right (D)</p>
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Which of the following is true about little endian?

<p>The least important part is written first (D)</p>
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What is the representation of the byte sequence 1234 in little endian?

<p>4-3-2-1 (C)</p>
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How can you convert between big and little endian?

<p>Reverse the sequence of bytes (D)</p>
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What does the Previous Block Hash represent in a block header?

<p>The hash of the previous block (B)</p>
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What is the purpose of the Merkle Root in a block header?

<p>To verify the validity of the block (D)</p>
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What is the significance of the Time Stamp in a block header?

<p>It represents the time at which the block was mined (D)</p>
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What is the hex representation of the unix time stamp 1432723472?

<p>5565a010 (A)</p>
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What is the purpose of detecting and verifying Multi-Sig addresses?

<p>To provide greater traceability on the blockchain (D)</p>
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Flashcards

Transaction Data

Contains all the transaction data within that block.

Block Header Purpose

To quickly identify the block within the blockchain.

Previous Block Hash

It links the current block to the previous one, forming a chain.

Timestamp Meaning

Indicates the latest time the transactions included in the block were broadcast to the network.

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Bitcoin Block Data Order

Bitcoin block data is ordered in Little Endian format.

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Little Endian Purpose

To ensure data is read correctly by systems using different endianness.

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Big Endian Storage

Stored from left to right, most significant byte first.

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Little Endian

the least important part is written first

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1234 in little endian

4-3-2-1

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Endian Conversion

Reverse the sequence of bytes.

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Previous Block Hash

It represents the hash of the block that came before the current one.

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Merkle Root Purpose

To ensure that the transactions included have not been tampered with.

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Timestamp significance

Represents when the block was successfully mined and added to the blockchain.

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Unix Time Stamp

5565a010

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Multi-Sig Addresses

To improve traceability on the blockchain

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