character: Satoshi Nakamoto
topic: Bitcoin and Blockchain Technology
grade: 10
subject: Computer Science
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character: Hal Finney
topic: Early Bitcoin Contributor
grade: 10
subject: Computer Science
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character: Vitalik Buterin
topic: Ethereum and Smart Contracts
grade: 10
subject: Computer Science
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character: David Chaum
topic: Digital Cash Concepts
grade: 10
subject: Computer Science
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