What are the 5 pillars of an Open Blockchain ?
Hwo much does it cost to create a new digital currency ? (Select all that apply)
Which of those countries are currently working on a digital currency ? (Select all that apply)
What is the average time between each new block ? What mechanism ensures this over the long term ?
Cesar wants to buy some bitcoins. He is searching for an easy, secured and fast solution. He is planning to buy 250 € all at once. He doesn't mind the government knowing everything and he is OK with doing KYC. What type of exchange is the most suitable for him?
You've sent a transaction 10 min ago but no new block have been created so far. After 12 minutes you see the newest block but your transaction isn't in it. Which statement is correct? (Select all that apply)
What happened if 2 miners find the block at the same moment? (Select all that apply)
China has banned and unbanned Bitcoin multiple times, could the US do the same and ban Bitcoin ?
Which of those companies are making wallets dedicated to the masses ? (Select all that apply)
Explain why a merchant would want to run a full node.
What happens to a transaction fee ?
Let's say you have an idea to improve Bitcoin (a true good idea, with serious coding and testing) , where should you post it to ? (Select all that apply)
What services is used to manage the Bitcoin's core Code?
As a survey question, do you believe in the Bitcoin Highway thesis (As time pass and infrastructure is built on top of bitcoin, exiting bitcoin toward Fiat currency will become less and less necessary or practical).
You need to pay back your friend but he only gave you a Bitcoin address and forgot to say his wallet's name. What should you do ?
Which hardware is the most efficient at mining Bitcoin ? (Select all that apply)
Who are the 3 main actors in a Bitcoin transaction ? (Select all that apply)
Why do miners use electricity? (1 point for the technical process, 1 point for the game theory aspect one)
Who is Hall Finney ? (Select all that apply)
Can Libra be decentralized ?