✍️ Your Digital Signature = Your Crypto Identity
Learn how private keys sign transactions and public keys verify them
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0 / 5 completed🔐 Introduction to Digital Signatures
Digital signatures are the cryptographic foundation of blockchain security. They prove ownership, authenticate transactions, and enable trustless systems without intermediaries.
🎮 Interactive: Sign & Verify a Message
Experience how digital signatures work by signing a message with a private key and verifying it with a public key
🤔 Why Digital Signatures Matter
Authentication
Prove you are who you claim to be without revealing your identity. Your signature is mathematically linked to your public key.
Integrity
Verify a message hasn't been altered. Even changing one character invalidates the signature completely.
Non-Repudiation
Can't deny signing something. Only your private key could have created that signature. It's cryptographic proof.
Trustless Systems
No need for trusted third parties. Anyone can verify signatures mathematically without asking permission.
🔑 The Key Pair: Your Digital Identity
- • Secret number (256 bits)
- • NEVER share with anyone
- • Used to CREATE signatures
- • Like your password + signature stamp
- • Lost = Funds lost forever
- • Derived from private key
- • Safe to share publicly
- • Used to VERIFY signatures
- • Like your username or address
- • Can't reverse to get private key