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🔐 Key Technology in Bitcoin
1. Cryptography
Bitcoin uses two main types:
Asymmetric cryptography
Public key (address)
Private key (digital signature)
Hash functions (SHA-256)
Transform data into unique codes
Ensure the integrity of the blocks
2. Decentralization
There is no central control (like a bank).
The network is maintained by thousands of nodes distributed around the world.
3. Consensus (Proof of Work)
It is the mechanism that allows everyone to agree on which is the valid version of the blockchain.
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