What is bitcoin? Created by Zulfikar Ramzan.

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https://www.khanacademy.org/economics-finance-domain/core-finance/money-and-banking/bitcoin/v/bitcoin-overview?utm_source=YT&utm_medium=Desc&utm_campaign=financeandcapitalmarkets

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https://www.khanacademy.org/economics-finance-domain/core-finance/money-and-banking/greek-debt-crisis/v/why-europe-is-worried-about-greece?utm_source=YT&utm_medium=Desc&utm_campaign=financeandcapitalmarkets

Finance and capital markets on Khan Academy: 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.

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