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6 questions
Blockchain is a network of computers called nodes that all have the same history of transactions.
True
False
In blockchain, the data is stored in a digital ledger.
True
False
Cryptography is the mathematical and computational practice of encoding and decoding data.
True
False
A middleman is involved in blockchain.
True
False
On average, _____ transaction of Bitcoin takes place per second.
two
one
Cryptocurrency can be used 24/7.
True
False
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