Understanding Bitcoin's Proof of Work: How It Secures the Blockchain 🔒

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An explanation of cryptographic proof-of-work protocols, which are used in various cryptographic applications and in bitcoin mining.
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Video by Zulfikar Ramzan. Zulfikar Ramzan is a world-leading expert in computer security and cryptography and is currently the Chief Scientist at Sourcefire. He received his Ph.D. in computer science from MIT.