Blockchain is

• Cryptocurrency

• Token

• A type of database

• Distributed and Decentralized

What is blockchain primarily known for?

• Video streaming technology

• Underlying technology of cryptocurrencies

• A brand of computer hardware

• A type of social media platform

Blocks in a blockchain are linked using what?

• Stories

• Pointers

• Chain

• Hashes

Who is the mysterious figure credited with creating Bitcoin?

• Elon Musk

• Bill Gates

• Satoshi Nakamoto

• Mark Zuckerberg

Which property of blockchain makes it nearly impossible to change past transaction data?

• Flexibility

• Immutability

• Versatility

• Permeability

Who can view transactions on a public blockchain?

• Only the sender and receiver

• Only the government

• Anyone

• Only people who use cryptocurrency

Why is blockchain considered secure?

• Because it uses strong passwords

• Due to encryption and decentralization

• It uses anti-virus software

• All users have admin rights

What do miners do in a blockchain?

• Dig for physical coins

• Design new crypto logos

• Verify and add transactions to the blockchain

• Sell cryptocurrency

In the context of blockchain, what do "miners" primarily use to perform Proof of Work?

• Marketing strategies

• Calculating skills

• Computational power

• Mathematical skills

Why is Proof of Work considered energy-intensive?

• Miners have to work in shifts

• It involves physical labor

• Computers compete to solve complex mathematical problems

• Miners use green technology