The Bitcoin/Crypto Thread

Klaus · wrote on 3 Nov 2021, 19:37

Anyone else following this?

I seem to have too much money on my hand, since I invested a little into Bitcoin.

The current value would only need to grow by 100,000% and I'm ready to retire!

Copper · wrote on 3 Nov 2021, 19:49

That sounds reasonable.

jon-nyc · wrote on 3 Nov 2021, 20:34

I was thinking I should buy a a few BTC just to force myself to pay attention

LuFins Dad · 4 Nov 2021, 02:57

What’s the lowest you can invest into Bitcoin? I know it doesn’t take much for some of the smaller coins…

LuFins Dad · 3 Nov 2021, 22:42

I have thought about going in with Luke to set up some mining from his dorm… Free electricity…

Klaus · wrote on 3 Nov 2021, 22:40

I don't think there's a lower limit on how much you can invest.

I'm using a broker where I pay 0.2% of the volume as fee. No fixed costs. I can buy Bitcoin for 0.01 Euro and would pay 0.0002 Euro fees.

Klaus · 11 Mar 2021, 22:44

@lufins-dad said in The Bitcoin/Crypto Thread:

I have thought about going in with Luke to set up some mining from his dorm… Free electricity…

Forget about it. These days, you need special very sophisticated hardware ("Bitcoin ASIC", something like this) for mining. Even a $5K GPU doesn't cut it anymore these days. And even then you need to participate in "mining pools" to ever mine anything.

Klaus · wrote on 3 Nov 2021, 22:59

One thing I don't quite understand:

There are numerous companies that offer cloud mining in places where energy is cheap, such as this one in Norway. If it is profitable to mine bitcoin in that location, why the hell would a company rent the equipment to someone else instead of making the profit itself?

taiwan_girl · 4 Nov 2021, 00:46

I just dont understand the value of bitcoin and other crypto money.

If that was all that I had, I think it would be pretty difficult to survive on a day to day basis.

fill the car with petrol? hmmmm
go to a restaurant or grocery to eat? hmmmmm
Pay my insurance? hmmmm
Go visit a doctor or dentist? hmmmm
etc

To my uneducated mind in this, it seems like the Holland tulip craze. People bidding up the price on something that does not have a real value behind it.

Educate me!!!

George K · 4 Nov 2021, 06:16

@taiwan_girl said in The Bitcoin/Crypto Thread:

it seems like the Holland tulip craze. People bidding up the price on something that does not have a real value behind it.

That's my understanding as well.

Axtremus · wrote on 4 Nov 2021, 00:52

@Klaus, you sure you want to get into Bitcoin now?
Elon Musk just got out of accepting Bitcoin as payment for Tesla vehicles.
Maybe try Dogecoin?

89th · 4 Nov 2021, 12:40

@lufins-dad said in The Bitcoin/Crypto Thread:

What’s the lowest you can invest into Bitcoin? I know it doesn’t take much for some of the smaller coins…

Sign up on Coinbase.com and you get free $5 in Bitcoin.

89th · 11 Apr 2021, 03:03

I have some cash invested in a few coins. I wanted to get some exposure without risking too much. My main coin is Ethereum (used as a platform for many other coins, also is the core for NFTs which I see as a legit digital solution), although Bitcoin is obviously the main coin out there. I have a little stake in about 5 other coins, in case any of them take off. My real retirement plan though is the SHIB coin (aka a doge wannabe). I bought 4 million of those coins (for like $180) so if it can just get to a dollar, I’ll be rich.

Klaus · 6 Nov 2021, 02:33

@george-k said in The Bitcoin/Crypto Thread:

@taiwan_girl said in The Bitcoin/Crypto Thread:

it seems like the Holland tulip craze. People bidding up the price on something that does not have a real value behind it.

That's my understanding as well.

But US dollar and other fiat currencies have no value behind it either.

mark · 8 89th 4 Nov 2021, 02:57

@89th said in The Bitcoin/Crypto Thread:

@lufins-dad said in The Bitcoin/Crypto Thread:

What’s the lowest you can invest into Bitcoin? I know it doesn’t take much for some of the smaller coins…

Sign up on Coinbase.com and you get free $5 in Bitcoin.

I signed up and got my $5.00 in Bitcoin.

It immediately fell to $4.92. lol

Copper · wrote on 4 Nov 2021, 13:23

I just tried to sign up.

I got through most of it, but they didn't like my paypal. No reason, they just said it doesn't work - try again.

Klaus · 11 May 2021, 08:43

I found this article, which explains what it would take a central authority to take over Bitcoin, interesting.

https://braiins.com/blog/how-much-would-it-cost-to-51-attack-bitcoin

I wondered if Jeff Bezos could take over Bitcoin if he'd use the whole Amazon cloud computing stuff exclusively for that purpose. From what I understand, it wouldn't work since normal computers, even many of them, and even millions of modern graphics cards, are too slow to compete with the special mining hardware.

Also, even if a central authority would control Bitcoin for a while with a 51% attack, the damage would be somewhat limited:

An attacker that controls more than 50% of the network's computing power can, for the time that he is in control, exclude and modify the ordering of transactions. This allows him to:

Reverse transactions that he sends while he's in control. This has the potential to double-spend transactions that previously had already been seen in the block chain, affecting all coins that share a history with the reversed transaction
Reverse confirmations for any transaction that had previously been seen in the block chain while he’s in control.
Prevent some or all transactions from gaining any confirmations
Prevent some or all other miners from mining any valid blocks
The attacker can't:

Reverse other people's transactions without their cooperation (unless their coin history has been affected by a double-spend)
Prevent transactions from being sent at all (they'll show as 0/unconfirmed)
Change the number of coins generated per block
Create coins out of thin air
Send coins that never belonged to him

Klaus · wrote on 5 Nov 2021, 08:37

Also, you'd need to command a lot of energy, in addition to somehow getting hold of enough hardware:

that would put the electricity capacity needed to power all those ASICs at ~4.4 GW of power.

4.4 Jigawatts! Great Scott!

Klaus · wrote on 5 Nov 2021, 08:49

After looking into it a bit more, I must say that I'm quite impressed how sophisticated the idea of Bitcoin is. The way the mining/proof of work idea interacts with the distributed blockchain trust idea is genius.

taiwan_girl · 6 Nov 2021, 11:52

@klaus said in The Bitcoin/Crypto Thread:

@george-k said in The Bitcoin/Crypto Thread:

@taiwan_girl said in The Bitcoin/Crypto Thread:

it seems like the Holland tulip craze. People bidding up the price on something that does not have a real value behind it.

That's my understanding as well.

But US dollar and other fiat currencies have no value behind it either.

I think yes and no.

There is pretty much zero chance that the US government will say that US dollars are not acceptable. To me, that means that it has some value and will continue to have some value. I know that next week, next year, next century, I can go into a store and buy something with US dollars.

But look at China, they recently pretty much said the opposite about crypto currency. Maybe I had the equivalent of $1 MM USD in crypto and live in China. All of sudden, I cannot use it. To me, that means that it has no real value.

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The Bitcoin/Crypto Thread