Here is a list of ten of the most prominent Bitcoin supporters and influential figures who have played a crucial role in the cryptocurrency space since its inception:

1. Satoshi Nakamoto

The mysterious founder of Bitcoin, known only by this pseudonym, remains one of the most influential figures in Bitcoin's history. Nakamoto launched Bitcoin in 2009 and invented the blockchain technology, paving the way for the cryptocurrency revolution.

2. Elon Musk

CEO of Tesla and SpaceX, Musk has been a vocal supporter of Bitcoin, despite his fluctuating opinions. Musk has had a significant impact on Bitcoin's price movements, especially with his tweets and Tesla's investment of $1.5 billion in Bitcoin in 2021, which greatly boosted Bitcoin's legitimacy in mainstream markets.

3. Robert Kiyosaki

The author of Rich Dad Poor Dad, Kiyosaki has been a strong advocate for Bitcoin as a hedge against inflation and economic instability. He often compares Bitcoin to gold, believing it represents the future of money.

4. Michael Saylor

CEO of MicroStrategy, one of the biggest institutional investors in Bitcoin. His company holds hundreds of thousands of Bitcoin, and he has publicly endorsed Bitcoin as the best store of value.

5. Changpeng Zhao (CZ)

Founder and CEO of Binance, the world's largest cryptocurrency exchange by trading volume. Zhao has played a major role in shaping the global Bitcoin market.

6. Brian Armstrong

Founder and CEO of Coinbase, one of the largest cryptocurrency exchanges in the United States. Under Armstrong's leadership, Coinbase has been pivotal in bringing Bitcoin and other cryptocurrencies to the public.

7. Tim Draper

A well-known venture capitalist who invested in Bitcoin in its early days. Draper is a strong supporter of cryptocurrencies, particularly Bitcoin, and has predicted that Bitcoin will reach $250,000 in value.

8. Jack Dorsey

CEO of both Twitter and Square, who has consistently supported Bitcoin. He believes Bitcoin could become the global currency for the internet, and his companies have invested heavily in the cryptocurrency.

9. Winklevoss Twins (Cameron and Tyler)

The Winklevoss twins are early investors in Bitcoin and founded the Gemini exchange, a licensed cryptocurrency exchange. They were among the first billionaires to benefit from Bitcoin.

10. Peter Thiel

The founder of PayPal and an early investor in Facebook, Thiel is a strong advocate for Bitcoin and decentralized technologies. He sees Bitcoin as a way to escape the control of governments and believes it holds massive growth potential.

On the other hand, there are several personalities who have criticized Bitcoin, calling it a bubble, a zero-sum game, or even a scam. These individuals have expressed deep skepticism about Bitcoin's value and its potential for long-term sustainability:

1. Warren Buffett

Buffett has repeatedly referred to Bitcoin as a "bubble" and a "mirage," comparing it to a speculative asset rather than a legitimate currency. He has warned that Bitcoin lacks intrinsic value and will ultimately burst.

2. Charlie Munger

Vice chairman of Berkshire Hathaway, Munger shares Buffett's skepticism, describing Bitcoin as "repugnant" and "a financial product" that attracts only those seeking quick profits.

3. Jamie Dimon

CEO of JPMorgan Chase, Dimon has been one of Bitcoin's most vocal critics, calling it a "fraud" and worse than "tulip mania," referring to the Dutch tulip bubble.

4. Paul Krugman

Nobel laureate in economics, Krugman has called Bitcoin a "bubble," warning that it is a "zero-sum game" driven by speculation.

5. Nouriel Roubini

The economist who predicted the 2008 financial crisis has referred to Bitcoin as the "mother of all bubbles" and a "scam," arguing that its volatility and energy consumption make it a failure.

6. Shoshana Zuboff

A professor at Harvard University and author of The Age of Surveillance Capitalism, Zuboff has expressed skepticism about Bitcoin, especially regarding its potential to enable illegal activities.

7. Kenneth Rogoff

Former IMF governor, who has warned that Bitcoin is a speculative asset with no intrinsic value, predicting it will collapse in the future due to its volatility.

8. Jim Rogers

The investor has described Bitcoin as a "bubble" fueled by speculation, arguing that it lacks the fundamental qualities that make it a stable store of value.

9. Mark Cuban (initially)

While Cuban has later acknowledged Bitcoin's value, he was initially a strong critic, labeling it a "bubble" and comparing it to a "Ponzi scheme."

10. Raghuram Rajan

Former governor of the Reserve Bank of India, who has expressed concerns about Bitcoin, calling it a speculative asset and warning that it could threaten financial stability.

These figures continue to emphasize that Bitcoin lacks stability, regulatory oversight, and the intrinsic value needed to become a widely accepted currency or investment.

Sources:

1. Bitcoin Investor's Guide – Investopedia

2. Cryptocurrency News – Decrypt

3. Bitcoin and the Future of Cryptocurrencies – Forbes

4. Warren Buffett on Bitcoin – CNBC

5. Charlie Munger's Views on Bitcoin – Business Insider

6. Jamie Dimon and His Comments on Bitcoin – Reuters

7. Paul Krugman on Bitcoin as a Bubble – The New York Times

8. Nouriel Roubini's Criticism of Bitcoin – The Guardian

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