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What is a Bitcoin fork?

blog.coinbase.com

51–60 of 119 posts

Re: What is a Bitcoin fork?

#51
post #48

Ok, stupid question: in real dollars, if I sell my ONE coin just before a fork or my then TWO coins right after the fork, will I end up with the same dollar amount? For that to happen the old coin type would have to lose in price at which the fork starts. How is the price for a coin of a fork determined?

You are attaching way too much logic to working out the bitcoin price.

Re: What is a Bitcoin fork?

#52
post #38

That helped but I do not understand the economic compatibility of a fork. How do they not wreak havoc and chaos on that coin's economy? Do I get coins for each of the new coins or do I have to pick? It all feels really risky and that risk feels foisted upon me. Can I cash out before the fork?

A fork is just a protocol upgrade that is non-backward-compatible and where both the old and new protocols have significant amount of validators (in PoW, this means miners) operating with that protocol. Since the protocols are not compatible, they have a different transaction history after the fork. Since they used to be compatible, if you had 1 BTC before the fork, after the fork, all validators still agree that you…

Could I trade with that btc on both forks at the same time?

Re: What is a Bitcoin fork?

#54
post #38

Earlier quoted context omitted.

A fork is just a protocol upgrade that is non-backward-compatible and where both the old and new protocols have significant amount of validators (in PoW, this means miners) operating with that protocol. Since the protocols are not compatible, they have a different transaction history after the fork. Since they used to be compatible, if you had 1 BTC before the fork, after the fork, all validators still agree that you…

Could I trade with that btc on both forks at the same time?

After the fork you have 1 BTC which you can use only on the BTC chain, and 1 BTH which you can use only on the BTH chain. And these are completely separate.

Re: What is a Bitcoin fork?

#55
post #48

Ok, stupid question: in real dollars, if I sell my ONE coin just before a fork or my then TWO coins right after the fork, will I end up with the same dollar amount? For that to happen the old coin type would have to lose in price at which the fork starts. How is the price for a coin of a fork determined?

That applies to stock split; before the bitcoin cash split, everyone was expecting that should be the case.

However in this market; market is irrational and it all depends on how the market is willing to price it pre/post fork. No, you won't wind up with the same dollar amount.

Re: What is a Bitcoin fork?

#56
post #38

Earlier quoted context omitted.

A fork is just a protocol upgrade that is non-backward-compatible and where both the old and new protocols have significant amount of validators (in PoW, this means miners) operating with that protocol. Since the protocols are not compatible, they have a different transaction history after the fork. Since they used to be compatible, if you had 1 BTC before the fork, after the fork, all validators still agree that you…

Could I trade with that btc on both forks at the same time?

Think about it using my definition of fork, the answer should be clear

Re: What is a Bitcoin fork?

#57
post #48

Ok, stupid question: in real dollars, if I sell my ONE coin just before a fork or my then TWO coins right after the fork, will I end up with the same dollar amount? For that to happen the old coin type would have to lose in price at which the fork starts. How is the price for a coin of a fork determined?

For all intents and purposes, from the point of view of each chain, the other does not exists but it merely turns out their past are the same. IOW BTC is B2X (the money, not the unit) before the fork, and each one considers that its own blockchain is the Truth†. So:

    - from the BTC point of view, there is 1 BTC both before and after the fork
    - from the B2X point of view, there is 1 B2X both before and after the fork
    - at any one time the value of 1 BTC is whatever people want to exchange it for
    - at any one time the value of 1 B2X is whatever people want to exchange it for
    - it just turns out that BTC == B2X before the fork
Therefore the value of each one merely depends on how much people care to trade them for, and the fork may affect this value, both before and after. Both may crash, both may shoot through the roof, or anything in between independently. But yes indeed since they come from the same past, if T is the last common transaction on the blockchain, then in between T and T+1 your 1(BTC+B2X) == X$ just became 1BTC + 1B2X == Y$ + Z$ (which at that precise, immaterial, instant == X$ + X$) by virtue of the fact that they disagree about the validity of any transaction you may make on each chain, including ones that get $$ out of the system. Hence you can "double spend" the coin. But speculation may shortly thereafter make Y and Z stay == X$ + X$, or become X$ + 0$, or X/2$ + X/2$).

† Without replay protection, transactions may or may not be replayed, but the blockchains do differ.

Re: What is a Bitcoin fork?

#58
post #48

Ok, stupid question: in real dollars, if I sell my ONE coin just before a fork or my then TWO coins right after the fork, will I end up with the same dollar amount? For that to happen the old coin type would have to lose in price at which the fork starts. How is the price for a coin of a fork determined?

Theoretically, this is true. The value, and hence the price, is splitted. But markets are not perfectly efficient, and Bitcoin markets in particular are very inefficient and totally driven by psychology, particularly speculation and greed.

This can make you end up with either a larger sum if you buy exactly before and sell shortly after the fork, or a smaller sum. Why should the sum be larger? Because there's people on both sides of the fence (the original coin and the forked coin) which think that their coin will "win the race", thus they include a certain additional, speculative value deducted from assumed future price increases into their estimates of the current value of their preferred coin. This drives up the speculative value of both coins simultaneously, and since either side focuses mostly on its preferred coin, driving up the perceived value of it, and neglects "driving down" the perceived value of the other sides' coin (because of disinterest or simply because driving down perceived value is much harder than driving it up, as humans are usually focused on positive things), this can result in a situation in which the mathematical sum of the speculative value added to both post-fork coins is quite a bit larger than the "combined" speculative value that was previously included in the original coin.

This is, in my opinion, exactly what happened with the Bitcoin Cash fork earlier this year. For this Segwit fork, people saw that the earlier fork "created value out of thin air" and thus began to incorporate some of this assumed future value into their value proposition of the coin pre-fork. This drove the price increase right before the fork (well, partly - there was also the CME news, which was a big driver, too). Funny enough, this time it probably won't work out as it did last time - the fork was "called off", and even if it would happen, it most likely will not result in a similar situation due to a) the "free money" having already been priced in during the time before the fork and b) the fork being a "colliding fork" this time, with both coins wanting to be "the real Bitcoin", having no replay protection or real separation of both networks. They wouldn't have coexisted for long - one of them would have "won" and captured the vast majority of value, while the other one would have diminished to the low 3-digit or even 2-digit price realm (effectively equaling a worthless coin, as in crypto, there is NEVER a really worthless coin in terms of having a price of zero - there is always someone wanting to pay some price, albeit very low, for anything that has "crypto" attached to it ;-) ).

Re: What is a Bitcoin fork?

#59
post #44
post #37

Earlier quoted context omitted.

Jackson Palmer (Dogecoin founder) talks all about the Bitcoin fork at the last local Hack Days meetup[0]. It's actually a really great talk. [0](Skip to 30m) https://www.facebook.com/hackdays4all/videos/549774142034920...

Do you have a non-fb link?

Not at the moment. I'm sure I can get this re-uploaded to youtube later tomorrow and follow up with a link.

Re: What is a Bitcoin fork?

#60

Earlier quoted context omitted.

Saying the rules can be changed is like saying that your eyes changed color if you have a child with different color eyes. A fork is not the same chain as the original.

All of the comments above lead me to understand that basically anything can happen with BTC and this kind of undermines it's value as a 'hard currency'. The whole point of decentralization was that nobody could control it, and devaluation was based on some algorithm, limited by tech. If these rules can change, then the intrinsic value of BTC is truly up in the air. What business would invest in using BTC as a currenc…

Businesses don't invest in currency, they invest with it. Businesses don't use cash for investments, either. Investing is buying something that will generate returns, and cash cannot generate any return, kind of by definition. Fiat currencies have no intrinsic value, either, but everyone still uses them. But since one has to keep some cash on hand, a stable currency is preferable.

The only reason people are investing in BTC is that the price is going up because demand is going up faster than supply is increasing. It's not really any different than if Confederate paper money became the hot thing, and stores started accepting it for payment, despite it not being legally currency. Since they only discover new sources of Confederate money every so often, if everyone wants to buy the stuff, the price is going to go up. If this keeps on happening year after year, people are going to start thinking it always goes up and buy it expecting it to go up.

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