First name / Nickname:

What Should You Keep Secure ?

Private Key Bitcoin Address IP address MAC Address

the Bitcoin blockchain grows by using ?

Proof of Stake Proof of Time Proof of Network Proof of Work

Which is not a feature of Bitcoin ?

Censorship resistant Distributed ledger Private Deflationary

Bitcoin was invented by ?

Dorian Nakamoto Charlie Lee Nick Szabo Satoshi Nakamoto

What is the smallest unit of Bitcoin ?

0.001 0.00001 0.0000001 0.00000001

A Bitcoin block is validated by ?

Central Authority Banks Trusted Nodes Cryptographic Proof

What key problem did Bitcoin solve ?

Digital Cash Double Spend Cryptography Peer Transactions