Topic: Could China (or similar) take control of Bitcoin? - page 7. (Read 1714 times)

This came up as a side discussion in another thread, and I thought it would be interesting as a top-level discussion here.

The notion is this: although taking over 50% of the Bitcoin hashrate would be a practical impossibility for any private actor or even a small country, China, as a country, has at times hosted over 50% of Bitcoin's hashrate, and it's thus plausible they could make this happen again if they wanted to.

And whomever controls over 50% of the hashrate can dictate the software in use, and/or dictate the contents of the blockchain. As the theory goes, if China wanted to wreak havoc on the world economy, or if it wanted to extract a ransom, or if it simply wanted to profit by inserting its own blocks, then... it could. They could do anything. Perhaps China could decide that Satoshi's blocks should be given away to charity. Maybe they change the architecture so that it worked better in China, or conformed to their "laws" or something.

So this brings up questions:

1. Is this technically possible?

2. What would be the technical implications of China doing this?

3. What would be the geopolitical implications?

4. What would this do the broader cryptocurrency sector?

5. Have major governments e.g. the US and NATO countries ever (publicly) announced any contingency planning around this problem? Putting a $1.5T asset at risk is something that could rattle the entire world economy. This seems like something they would at least think through?

Looking forward to people's thoughts...

1. Is this technically possible?

2. What would be the technical implications of China doing this?

3. What would be the geopolitical implications?

4. What would this do the broader cryptocurrency sector?

China still contains a sizable percentage of worldwide Bitcoin mining, so it is by no means "banned" there.

And even if China hated Bitcoin, that doesn't mean they wouldn't attempt to take it over.

I don't know why I feel repulsed whenever I see a mention of China in relation to cryptocurrency, anywhere. I guess it has to do with how China let this industry down by banning crypto activities in that country in 2017. That action was one that hit me hard at the time as a newbie in this industry. Then China was in a lead position in the space with lots of mining hash from there. That was then. In today's reality  I don't think anyone should as little as accord China a second thought once this industry is concerned.

The notion is this: although taking over 50% of the Bitcoin hashrate would be a practical impossibility for any private actor or even a small country, China, as a country, has at times hosted over 50% of Bitcoin's hashrate, and it's thus plausible they could make this happen again if they wanted to.

They could simply buy 3 billion worth of equipment (resell price) so way cheaper produced and with that 30% added they would force a ton of other miners in bankruptcy, taking over the hashrate pie, so rather than adding 600exahash to subdue the current one they could simply replace them by bankrupting and making mining less profitable for other miners, while still making some money.

As of last September, China had 21% of the world-wide hashrate for Bitcoin:

https://buybitcoinworldwide.com/mining/by-country/

So that "ban" isn't really doing very much for that either.

To take control of bitcoin, you need to take control of 80% if not all the networks and even at that moment, you'd still need a lot of power and money (for the equipment) to be able to pull it off and China's lacking in money already

To take control of bitcoin, you need to take control of 80% if not all the networks and even at that moment, you'd still need a lot of power and money (for the equipment) to be able to pull it off and China's lacking in money already if you're keeping up with the Chinese stuff that's reported by investigative reporters so I don't believe that it's in their agenda to take over the bitcoin network anytime soon, pretty sure that whatever they're doing now, bitcoin or any cryptocurrency has no relation to it or anything like that.

Why would they now?

They already own the Oval Office.

What you're saying is 51% attack forever on Bitcoin which is technically possible but not in reality and I doubt China will be interested in doing it cause it costs billions just to keep the control for that they don't get anything at all so there's no point of any government try to take control of Bitcoin in that way.

Says who? China and Hong Kong are different, China completely ban Bitcoin while Hong Kong accepts Bitcoin.

No matter what facts you include here. A nation cannot control Bitcoins. It’s designed in such a manner that no one can have manageable access on it. Yes nations can track the transactions made with Bitcoins. They can impose a tax on it, but there is no way possible they can control it. China always promises things with high values but never able to prove it or delivers it. Hence its not at all possible.

China didn't ban Bitcoin from their society, and it's still perfectly legal for individuals to hold and trade Bitcoin in China. The only thing they did is forbid their banks and financial institutions from holding Bitcoin on their balance sheet.

SHANGHAI/LONDON, Sept 24 (Reuters) - China's most powerful regulators on Friday intensified a crackdown on cryptocurrencies with a blanket ban on all crypto transactions and mining, hitting bitcoin and other major coins and pressuring crypto and blockchain-related stocks.
Ten agencies, including the central bank, financial, securities and foreign exchange regulators, vowed to work together to root out "illegal" cryptocurrency activity, the first time the Beijing-based regulators have joined forces to explicitly ban all cryptocurrency-related activity.

if China were to take control of 50% of bitcoin investors might lose some confidence on the coin.

I feel like if China were to do this it would only be to go procure another session of FUD for everyone similar to how they keep banning Bitcoin from their society just to get the price down so they can buy more. Talk about a power hungry country! Hopefully they never do this as I could see it being a devistating time for Bitcoin and definitely a lot of folks rushing to get their money out as welll.