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*Potential Issues With SHA256 Hashing*

1. Bitcoin uses SHA256, which has created an inherent problem in using SHA256 for password hashing because there is now a thriving ecosystem (worth billions of dollars) of organizations that have developed advanced silicon chips and "ASIC" miners that are designed with the sole intention hashing SHA256 as quickly & efficiently as possible

a. proof #1 (link from Bloomberg detailing how Bitmain's valuation was north of $15 billion at one point in time = https://www.bloomberg.com/news/articles/2019-06-21/bitmain-is-said-to-revive-ipo-plan-as-bitcoin-hits-one-year-high ; Bitmain is a Bitcoin mining company)

b. proof #2 (link from Bloomberg detailing Canaan's $90 million IPO last year = https://www.bloomberg.com/news/articles/2019-11-21/bitcoin-mining-company-canaan-raises-90-million-in-u-s-ipo ; they are yet another Bitcoin mining firm)

c. live video showing an actual Bitcoin mining facility (one of many) = https://www.youtube.com/watch?v=Ri5djo3EOGI

2. SHA256 can be compromised via length extension attacks / malleability issues / side channel timing attacks
a. reference #1 ; (research paper detailing side channel attacks against SHA256 = https://ieeexplore.ieee.org/document/8210596 )
b. reference #2 ; (detailed answer exploring the issue of malleability in sha256 = https://crypto.stackexchange.com/questions/1801/what-type-of-hash-functions-provides-non-malleability-of-hash-digests )
c. reference #3 ; (detailed report explaining how length extension attacks are carried out against sha256 = https://blog.skullsecurity.org/2012/everything-you-need-to-know-about-hash-length-extension-attacks)

3. The NSA created SHA256

4. The NSA then moved away from using SHA256
Bloomberg.com
Bitmain Revives IPO Plan as Bitcoin Hits One-Year High
Bitmain Technologies Ltd., the world’s biggest producer of cryptocurrency mining chips, is reviving plans for an initial public offering as Bitcoin climbs to a one-year high, people with knowledge of the matter said.
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*Potential Issues With SHA256 Hashing*

1. Bitcoin uses SHA256, which has created an inherent problem in using SHA256 for password hashing because there is now a thriving ecosystem (worth billions of dollars) of organizations that have developed advanced silicon chips and "ASIC" miners that are designed with the sole intention hashing SHA256 as quickly & efficiently as possible

a. proof #1 (link from Bloomberg detailing how Bitmain's valuation was north of $15 billion at one point in time = https://www.bloomberg.com/news/articles/2019-06-21/bitmain-is-said-to-revive-ipo-plan-as-bitcoin-hits-one-year-high ; Bitmain is a Bitcoin mining company)

b. proof #2 (link from Bloomberg detailing Canaan's $90 million IPO last year = https://www.bloomberg.com/news/articles/2019-11-21/bitcoin-mining-company-canaan-raises-90-million-in-u-s-ipo ; they are yet another Bitcoin mining firm)

c. live video showing an actual Bitcoin mining facility (one of many) = https://www.youtube.com/watch?v=Ri5djo3EOGI

2. SHA256 can be compromised via length extension attacks / malleability issues / side channel timing attacks
a. reference #1 ; (research paper detailing side channel attacks against SHA256 = https://ieeexplore.ieee.org/document/8210596 )
b. reference #2 ; (detailed answer exploring the issue of malleability in sha256 = https://crypto.stackexchange.com/questions/1801/what-type-of-hash-functions-provides-non-malleability-of-hash-digests )
c. reference #3 ; (detailed report explaining how length extension attacks are carried out against sha256 = https://blog.skullsecurity.org/2012/everything-you-need-to-know-about-hash-length-extension-attacks)

3. The NSA created SHA256

4. The NSA then moved away from using SHA256

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Should You Buy Bitcoin?

In general, many financial experts support their clients’ desire to buy cryptocurrency, but they don’t recommend it unless clients express interest. “The biggest concern for us is if someone wants to invest in crypto and the investment they choose doesn’t do well, and then all of a sudden they can’t send their kids to college,” says Ian Harvey, a certified financial planner (CFP) in New York City. “Then it wasn’t worth the risk.” The speculative nature of cryptocurrency leads some planners to recommend it for clients’ “side” investments. “Some call it a Vegas account,” says Scott Hammel, a CFP in Dallas. “Let’s keep this away from our real long-term perspective, make sure it doesn’t become too large a portion of your portfolio.” In a very real sense, Bitcoin is like a single stock, and advisors wouldn’t recommend putting a sizable part of your portfolio into any one company. At most, planners suggest putting no more than 1% to 10% into Bitcoin if you’re passionate about it. “If it was one stock, you would never allocate any significant portion of your portfolio to it,” Hammel says.

How to Invest in Bitcoin?

Like a stock, you can buy and hold Bitcoin as an investment. You can even now do so in special retirement accounts called Bitcoin IRAs. No matter where you choose to hold your Bitcoin, people’s philosophies on how to invest it vary: Some buy and hold long term, some buy and aim to sell after a price rally, and others bet on its price decreasing. Bitcoin’s price over time has experienced big price swings, going as low as $5,165 and as high as $28,990 in 2020 alone. “I think in some places, people might be using Bitcoin to pay for things, but the truth is that it’s an asset that looks like it’s going to be increasing in value relatively quickly for some time,” Marquez says. “So why would you sell something that’s going to be worth so much more next year than it is today? The majority of people that hold it are long-term investors.”

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*Potential Issues With SHA256 Hashing* 1. Bitcoin uses SHA256

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