A student researching blockchain technology has taken the following notes:
• Blockchain is a decentralized digital ledger • Bitcoin, launched in 2009, was the first major blockchain application • Transactions are verified by a network of computers, not a central authority • Each block contains a cryptographic hash of the previous block • Blockchain applications extend beyond cryptocurrency to supply chain and voting
The student wants to explain how blockchain differs from traditional systems. Which choice most effectively uses relevant information from the notes to accomplish this goal?
Bitcoin, launched in 2009, was the first major application of blockchain technology.
Unlike traditional systems with central authorities, blockchain uses a network of computers to verify transactions on a decentralized ledger.
Each block in a blockchain contains a cryptographic hash linking it to the previous block.
Blockchain applications extend beyond cryptocurrency to areas like supply chain management and voting.
Correct Answer: B
Choice B. Contrasts decentralized network with central authority to show the difference.