What's in a Blockchain BLOCK?
Each blockchain block contains:
- Data: depends on the type of chain. Bitcoin stores the sender, receiver, and amount.
- Hash: a fingerprint that identifies the block. If the content changes the hash will not match and the interference will be detected.
- Hash of the previous block: This is what creates a chain because each block point to its subsequent one. Hashes are not generated en mass because they require a lot of computing power, through a method called proof-of-work.
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