there is no way to "cancel" a bitcoin transaction. when you create a transaction and broadcast it to the network, that is it. your transaction is out there until it either is confirmed or becomes invalid. there is a small chance that it drops out of mempool (the network forgets about it) but it is so small.

so either wait for it to confirm or try double spending it. you may find it hard as other nodes will reject your transaction if it is a double spend.
and double spend is practically spending the same coins (same transaction output) and send them to a new address that you control.

they have not yet started the market though. it was just the news. there are still 2 days left before the market starts only if nothing changes like last time (it was supposed to start on 11th).

correct!

if i am not mistaken they are using multiple exchanges and their index is an aggregate of all of them. their website only mentions Bitstamp, GDAX, itBit and Kraken.

price is based on demand and demand is not just based on functionality, it is also based on security.
for example if you create a exact copy of bitcoin (not these forks that are changing things) without changing anything, nobody will mine it, no mining means less security of the chain and that means no demand.

additionally because it will be a separate chain, anyone who have adopted bitcoin, if they want to adopt your chain too, they have to run your chain and that is not easy. so nobody would bother.

i have actually tested this with many exchanges and almost all of them are the same. if you place an order below the top order (either sell or buy order) the first orders on top are going to be filled until your order is no more. meaning you will sell at the highest price and if the first order was not enough to fill yours you will automatically move on to the next.

i have experienced some bugs with some random small exchanges (i don't even remember the name of it, the exchange is closed now so it doesn't matter). but most of them are the way i said above.

this is actually a neat trick to get your orders filled for sure in times when price is moving like crazy and the API doesn't support a market sell or it doesn't work properly

umm. lets see what we have got on the charts. maybe you are right.

yeah, i am starting to see what you mean. the cycle starts with the price rising slow at first, where they accumulate then it rises where the rally takes place and finally it ends with a drop where market corrects.

easily visible on bitcoin charts:









..... oopsie. i made a mistake. these are not bitcoin charts. this are literary any other asset in the world which have the same pattern. sorry
it is not so peculiar anymore, is it?

miners overworking! that is the first time i hear this statement
miners aren't doing anything different. unless you are pointing to the fact that difficulty has gone up a lot in the past year and it is harder to find a block (requires more work) but it has nothing to do with transaction fees or number of transactions in a block. those are still the same with or without the current difficulty.

hater? i wouldn't really call the duck a hater of bitcoin. he is actually quite the opposite. i believe he is one of the biggest traders of bitcoin but he is idiot enough to think him spreading FUD here is still effective for the times he wants to buy back after selling on top.

either than or he is simply getting paid to spread the FUD

i think the recent events (the 10-15 hard forks of bitcoin) have proven that you can do anything you want with bitcoin. "stealing inactive balances" requires a hard fork and doing that will create another altcoin similar to these 10-15 altcoins that started being created this month.

and it doesn't really matter anymore. it is not going to be "bitcoin". and the reason is simple. the notion of "inactive wallet balance" is ridiculous. it is simply thievery! no matter how pretty they are going to disguise it. it is like me coming into your home and take something out of your house and say since you are not using this item -that you paid for some day- i am going to take it away!

it is hard to tell you to buy or not buy bitcoin right now because bitcoin currently is in a state where it is hard to predict. it may have some dips which you can use them to buy bitcoin. but it may also shoot up towards $20,000 without any more dips. and unless something happens (either dip or rise) to break out of these lines, i can not speculate anything about short term of it.

but one thing is certain, hodling altcoins is not a good idea.

$100/$50,000 = BTC0.002!

and in my opinion your confusion is because you are thinking in terms of dollar. think about bitcoin as an stand alone currency.

if i tell you the jacket is worth $100.99 you are not going to think about it. you will give me a hundred dollar bill and 99 cents or 1 dollar and get 1 cent back. it has become automatic.

now imagine i tell you the jacket is worth 0.0021BTC. if you think of bitcoin as a currency like any other you are not going to think what does 0.0021BTC means. you will give me a 0.0021BTC bill (which is  a transaction in bitcoin worth that much).

true, but you should always try and analyze the situation to understand why some fall happened.
the reason for a fall is as important as the reason for the rise. as you said bitcoin is increasing in the "long term". all the drops so far have been correction of the market. even the biggest one that happened after 2013 was a big correction because of a big bubble.
the latest drop was also a bubble bursting and it is now gone. but it was a small one so the correction was also small.

it is a bit harder for mobile wallets because you can not verify the signature of the file that you download.
with a desktop wallet you just have to make sure the PGP public key really belongs to the real author then it is impossible to fake it. and if you trust the author then all is well.

in case of a mobile wallet all you can do is to visit the original website (like electrum.org) then get the real link to the download page from there.
then look at the feedback of it and also check who is the person who released it. that way you reduce the risk of downloading a fake wallet.

these are the keywords and in my experience there are lots of these types of "discussion" and "consideration" all around the world about bitcoin and banning or not banning it. even in Japan, you think they just all 100% agreed about adopting bitcoin?

and of course in the end it will all come down to two things: taxes and illegal activity.
they don't care about the second one that much, they care mostly about the taxes and the revenue that will create for them.

or you can simply keep your eyes open on the market and see which coin is extra active that particular day and then invest in that instead of wasting time on the same altcoin over and over.
and trust me, every day there is an altcoin that is going up and getting pumped hard. if you can catch them on time you can make the profit you are looking for consistently.

what else is new?
they seriously have to come up with more innovative names to call bitcoin, this one is already taken before.
and that just proves how scared they are about bitcoin. and as it grows bigger their fear also grows with it. and right now bitcoin is on the  verge of mainstream adoption and becoming unstoppable.

forks are like upgrades to bitcoin. and it needs them to add new functionality for example bitcoin needed a fork to enable P2SH (multi signatures) and it needed a fork to enable Segregated Witness.

the things you are seeing these days and you have mentioned are not forks for bitcoin, they are rather forks from bitcoin. so bitcoin doesn't need them. they are just creating a new altcoin out of an already working system!

some are and some aren't scams. and it is not just about paying.

most of them have some sort of provably fair system implemented that you can check out and verify if the numbers they chose were really correct/real or not. that part is without any doubt.
but you can never know if there actually were 100 lottery tickets or 10 million mostly belonging to the owner himself!

people are certainly hoping for it to happen but nobody dares sell their bitcoins. and whales surely did manipulate the market and even caused panic where weak hands dumped in fear but apparently the price is more resilient to this type of nonsense.

we may see some more big fluctuations because of bitcoin futures an mainly the "uncertainty" about them but soon it will be fixed and we will be back on track like before.

this doesn't make any sense! you say "avalanche" but An avalanche is a rapid flow of snow down a sloping surface! which sounds more like a dump for bitcoin but then you talk about price rise. the analogy doesn't make any sense

in any case, these Futures Tradings that keep popping up these days have been great so far for hyping bitcoin up. and since it already were everywhere on the media, it became even more popular. as time goes by, it gives bitcoin more legitimacy and increases the adoption as a result. and that always leads to bigger rise. $100,000 in 1.5-2 years is going to happen in my opinion.

from the reliable sources that i sometimes read technical stuff, i have a feeling that quantum computing is overly exaggerated when it comes to bitcoin. and it is most of the times used to scare people into thinking bitcoin's security can be broken with them.
but they always forget that bitcoin is using the same hashing techniques as so many other things. and if it is to be broken, those others will fall so much faster than bitcoin. and it consists of banks and lots of other security related stuff.