Cryptography 101: How Hashes, Public Keys & Digital Signatures Protect Blockchain 🔐

🔐 Master the fundamental cryptographic concepts that power blockchain technology!

Learn how cryptography secures blockchain systems through three essential components: hash functions, public key cryptography, and digital signatures. This beginner-friendly guide breaks down complex cryptographic principles into easy-to-understand concepts.

🎯 What You'll Learn:
✅ Understanding cryptography and its role in blockchain security
✅ How hash functions create digital fingerprints for data
✅ Key properties: deterministic, one-way, avalanche effect, collision resistant
✅ Hash functions in blockchain: block linking, proof of work, data integrity
✅ Symmetric vs asymmetric encryption explained
✅ Public key cryptography fundamentals
✅ How digital signatures authenticate transactions
✅ Complete blockchain transaction flow from creation to verification

🔑 Perfect for blockchain beginners, crypto enthusiasts, and anyone interested in understanding the cryptographic foundation of distributed ledger technology. No prior technical knowledge required!

💡 This video explains how mathematical algorithms protect your cryptocurrency transactions and ensure blockchain immutability without intermediaries.

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Chapters:
00:00 - Cryptography Basics: Securing Blockchain
00:24 - What is Cryptography?
01:01 - Hash Functions
01:34 - Key Properties of Hash Functions
02:10 - Hash Functions in Blockchain
02:41 - Symmetric vs Asymmetric Encryption
03:12 - Public Key Cryptography
03:47 - Digital Signatures
04:24 - Why Digital Signatures Matter
05:03 - Cryptography in Action
05:50 - Outro

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