Everything you always wanted to know about NFTs (but were too afraid to ask)
Lock and Code
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What Is a Block Chain?
Block chain is an idea. And the idea of a block chain is to create something that is essentially tamper proof. It starts life as a way of recording currency transactions for a currency called bit coin. A block chain works by recording a transaction and then cryptographically tying that transaction to the entire history of all the other transactions.
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