9 videos
Learn about bitcoins and how they work. Videos by Zulfikar Ramzan. Zulfikar 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.

Bitcoin: What is it?

VIDEO 9:08 minutes
What is bitcoin?

Bitcoin: Overview

VIDEO 11:02 minutes
An introduction to the mechanics of bitcoins and an overview of how transactions take place.

Bitcoin: Cryptographic hash functions

VIDEO 10:14 minutes
What cryptographic hash functions are and what properties are desired of them.

Bitcoin: Digital signatures

VIDEO 9:48 minutes
A high-level explanation of digital signature schemes, which are a fundamental building block in many cryptographic protocols.

Bitcoin: Transaction records

VIDEO 11:32 minutes
The basic mechanics of a bitcoin transaction between two parties and what is included within a given bitcoin transaction record.

Bitcoin: Proof of work

VIDEO 10:32 minutes
An explanation of cryptographic proof-of-work protocols, which are used in various cryptographic applications and in bitcoin mining.

Bitcoin: Transaction block chains

VIDEO 11:25 minutes
The mechanics of a bitcoin transaction block chain, which is a construct that is generated by bitcoin miners and functions as a global ledger for recording and validating bitcoins.

Bitcoin: The money supply

VIDEO 12:14 minutes
The mechanisms by which the supply of bitcoins is controlled.

Bitcoin: The security of transaction block chains

VIDEO 15:16 minutes
A detailed explanation of what makes bitcoin transaction block chains secure.