Nicolau Teixeira on Nostr: In Bitcoin, ownership and security are based on cryptographic keys — no banks, no ...

In Bitcoin, ownership and security are based on cryptographic keys — no banks, no intermediaries. Just you and your private key.

How It Works:

01 - Private Key: A secret code that controls your Bitcoin. Never share it.
02 - Public Key: Derived from the private key, used as your address to receive funds.
03 - You sign transactions with your private key. The network verifies them using the public key.
04 - If the signature checks out, the transaction is valid and irreversible.

"Not your keys, not your coins."

If you don’t control the private key, you don’t control the Bitcoin.

Best Practices:

01 - Use offline storage (cold wallets)
02 - Prefer hardware wallets
03 - Keep secure backups
04 - Beware of phishing & malware

If you lose your private key, your Bitcoin is gone - forever.
This is true freedom, but it comes with real responsibility.

Bitcoin hands you financial sovereignty - censorship resistance, independence, and control - but only if you hold your keys.

From your favorite Bitcoiner from Madeira - viva a liberdade! 🧡