In the late 1990s, computer scientist and cryptographer Nick Szabo wanted to create a digital currency that didn't rely on a central bank or government. He wanted something that had the same properties as physical gold, scarce, hard to mine and independent, but could be sent securely over the internet.

He designed a system where:

Proof of Work: Computers would use their processing power to solve complex mathematical puzzles.
The Chain: Once a puzzle was solved, the answer was linked to the next puzzle, creating a public chain of proof.
Scarcity: Solving these puzzles required real-world energy and time, making the digital "gold" unforgeable and strictly limited.

The Big Problem It Couldn't Solve

Szabo’s design was brilliant, but it had one fatal flaw that kept it from working in the real world: The Double-Spending Problem.

Without a central entity to check the ledger, there was no foolproof way to stop someone from copying the digital file and spending the exact same "Bit Gold" twice at the same time. Szabo suggested using a majority vote among a network of computers to confirm transactions, but back then, a malicious actor could easily create thousands of fake virtual computers to rig the vote.

The Bitcoin Connection

Ten years later, in 2008, Satoshi Nakamoto solved that final puzzle.

Satoshi introduced a difficulty adjustment (making puzzles harder or easier depending on how many computers are mining) and a consensus mechanism based on total computing power. This completely solved the double-spending issue.

While Satoshi has never confirmed if they used Szabo's exact work as a direct reference, the similarities are undeniable. Bit Gold laid the intellectual foundation; Bitcoin turned the theory into reality.

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https://www.dbm.academy/faq for more blockchain vocabulary.

Check out the FREE DBM Academy Course | An Introduction to your Blockchain Journey - https://www.dbm.academy/blog/93993-free-course-an-introduction-to-your-blockchain-journey

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