I agree. I was just answering your question on how would a miner know which ones are signed by the adversary. Miners are usually (I think they had an agreement in the past) running Bitcoin Core so they might not just pick up the one with highest fee, but discard it as it came after the first one.
Of course you shouldn't count on this.


Now this is a prediction game. I can't really answer this as no one can. What is exactly near zero, that is the question.
Block subsidy might get near zero, depending on how near we are talking about here, but it will not be zero as long as there are any transactions that pay the fees.
If the subsidy is too low, then there will be less miners. It is a self-correcting mechanism.

But then again, who knows...
Many things will be very different from now by that time. Lower (or none) block reward, off chain transactions, high adoption (hopefully), etc.

It is obviously some bug in blockchain.info exploited by someone.
You can also see the text ("Jeff was here") instead of his address when he sent the coins to that address.

On other block explorers there is no such bug as you can see https://blockexplorer.com/address/1HZwkjkeaoZfTSaJxDw6aKkxp45agDiEzN

I am no expert on WannaCry worm, but I can tell you some things about it as far as I know.

First of all, infections by viruses and worms almost always have nothing to do with DoS attacks (even more so with DDoS attacks).

WanaCry's main (I can't even find info on any other) propagation technique was over the network (this is why it is a worm, not a virus) using a SMB port.
It exploited a vulnerability in Windows initially discovered by NSA and kept secret for years until someone hacked and published it with many other fully developed exploits and hacking tools on the Internet. They called themselves The Shadow Brokers, as they tried selling some of them.

So your main issue here was using Windows, of course, instead of a well developed open source operating system like many Linux distributions.
But updating your Windows would have helped in this particular scenario.

Nodes don't accept double spend transactions, at least the Bitcoin Core ones don't. Instead the return an error saying there is a tx mempool conflict.
Nodes don't accept conflicting transactions and they do not replay them, so a second transaction would only be available to the nodes that came online after the first transaction was sent or discarded the first one due to it being unconfirmed for too long or something like that.


To me both of these ranges seem artificial and make no sense. On average block is mined every 10 minutes and if everything is working correctly in the future, optimally all transactions would be added in the very next block. So depending on when transaction was published compared to this this period between two blocks, it would likely be 5 minutes on average.


I am no quantum physicist, but I don't think that quantum computers work like that, not like classical ones. Completely different story.
As I understand, quantum computer will either do the job practically instantly or will not be able to do it at all if it is not big enough.

I think that a bigger quantum computer doesn't add to speed, just in capacity of how many bits you can put in this superposition state.
And the speed of every quantum computer is achieved by moving electrons exactly by speed of light, as it uses super cooled wires or whatever as super conductors.

All of this seems very unreal to me as well, but that is the universe for you. It makes no sense, but is apparently true.
Just like that it might be impossible to scale quantum computers due to the system stop being quantum if it becomes big enough.

Number of computations done by these machines should grow exponentially by adding new quantum bits, but the difficulty of building them grows exponentially as well for every bit added.

Very weird technology, no doubt.

People still do Earth hour. There is no reason for this not working in Bitcoin. It is money, yes, but people donate money all the time for a better cause.
Andreas Antonopoulos received millions of dollars recently with BTC donations by community for his hard work in promoting Bitcoin over the years.
This isn't even asking people to give away money, just stop using it for a short amount of time.


Bitcoin is still better as a currency then anything else invented so far. For you it might be for profit, but for some this is a new way that we use money.
After all, that is the whole point why the price goes up, because some think that one day it will be more useful then any currency we have today.

Pozdrav! Dobro nam dosao

Why don't you just publish the transaction id and see if someone will help you out get it confirmed?

There is no way for me to know such things or have any educated opinion on it.
All I can say is that in the end, it doesn't matter.
Price of Bitcoin can go up or down for any outside reason of fear, panic, manipulation, greed, etc.
But in the end Bitcoin will rise in adoption, no matter it's price.
It is simply a better technology that can survive things that other currencies can't.
With natural selection of ideas and technology, Bitcoin will either come to the top or it never deserved to come to the top in the first place.
Either way, humanity will be better off.
My opinion is just that there is absolutely nothing as good as Bitcoin and that it is senseless to not expect it to take over the global stage as a main world currency.


To be honest, when Bitcoin goes down compared to fiat, every cryptocurrency goes down compared to fiat.
Due to transaction congestion Bitcoin lost some of it's cryptomarket share, but the price drop was felt in every cryptocurrency for other reasons.

Most often there are two sides to any coin in life.
When there is success, there is a drawback, but when there is failure, there is hope.

Security and privacy can only decrease with adding of new features and luxuries in life.
However there are always counter efforts by some that are trying to preserve it.

You can be certain that such technology will bring lower privacy, but also be certain that people will find ways to preserve it even with use of such devices.

Paper money is here to stay, but it will always be a worse option due to inflation.
There really is no way currently of creating decentralized paper money, so it will always be subject to trust in certain party and there will likely always be inflation.

I think that for majority of people using digital money will be easier and safer option.
They will be payed in it and hold their savings in it. And there is no reason for any other digital money to exist except Bitcoin.

Still sometimes some people might prefer to have some paper money, on long trips when their phone dies and whatnot.

I don't pay attention to the price as much as the development.
Bitcoin is as promising as ever, there is no reason for me to think of it any less.
I the long run, useful technology always stands the test of time.

sha256d is the answer.
To save others time searching for what sha256d is, it is just sha256 done twice, so "d" probably stands for "double".

Bitcoin PoW algorithm is double sha256, just like it uses double sha256 for computing transaction hashes.

It is likely that this has something to do with the transaction congestion on the Bitcoin blockchain right now.
Your coins are probably not lost, just the transaction is unconfirmed and you will probably need to wait for this to fix itself eventually.

You can also contact Changelly and tell them your issue, they might give you more information on this.

First of all, antiviruses are good at stopping wide spread well known infections. They are horrible at actually detecting viruses that are somewhat new, not wide spread yet or are staying dormant for  a while. Don't expect from an antivirus to protect you, especially if you are downloading unpopular software from the Internet.

Secondly, it is definitely a virus since there is nothing else that it can be. It is not an actual miner, as I said, you need special hardware called ASICs for mining Bitcoin. I heard of these things many times, these viruses are common in the cryptoworld, they often pose as a wallet or for even more naive, as a miner or some kind of Bitcoin generator or even hacking tool for hacking Bitcoin. Or whatever a newbie will believe that makes absolutely no sense at all if you have any grasp of how Bitcoin actually works.

Acceleration is not a technical term, confirmation is. Acceleration is no specific operation, confirmation is.
Acceleration is just a term people use to say "your transaction will be confirmed faster then it usually would, since I will confirm it even tho I usually wouldn't because of it's low fee". So asking for a program to accelerate makes no sense, neither does your Windows Bitcoin Miner.

It is a necessity of course. Here is more info about it: https://thehackernews.com/2016/08/ddoscoin-cryptocurrency.html

It is not impossible. People are known to do even more amazing things when they come together on something.
Perhaps organizing an event of sorts is in order. Like the Earth Hour when people turn their lights off, just for Bitcoin, or something like that.

When did BTC serve any significant purpose anyway?
BTC is highly speculative and it's price is just people speculating that it will have huge purpose one day.
BTC price never reflected it's value in the moment, but the value it will have once adoption becomes big enough.
You can either wait to see how Segwit and LN will deal with this or panic and leave now.
It is your choice, each perfectly valid and no one can blame you for it.

Don't panic sir. If you invested enough money in Bitcoin for you to cause panic, then you either invested too much or are to sensitive about this stuff.
No one knows where the price will go. I think many would call the recent dump a simple predictable correction.
Everything experiences price corrections, when the price goes or down, it always corrects it self. This is just a simple rule of trading. No price graph is naturally very steep. Bitcoin is just very volatile, it always was. This is because it is a very speculative asset. So when the price goes up, it goes up a lot and when it goes down it goes down a lot. It is just the general trend that you should pay attention to if you are an investor.

Did something else had a role in the price? Maybe, it is a huge World out there, there is always a cause and effect.
But is it well known? No. It is just Bitcoin doing Bitcoin stuff. Goes up, goes down, goes up, goes down...Usually more up then down, but who knows...

Bitcoin is still just as promising technology as it was last week, even more so. That is all I can tell you.

This is wrong. There is no benefit in security by spending your coins from an address. Address collision risk is equal whether your public key was published or wasn't before. If there are two public keys that hash to a same address they will both be able to spend those coins at any time, no matter if the coins were already spent from that address before using the other key. Bitcoin protocol doesn't care about the history of the address, just about the history of the transaction chain that spends those coins and if they were valid on each step.

Every miner can only confirm transactions. Acceleration just means that they will give priority to your transaction in the next block they mine which for big miners is every couple of hours.

I am unfamiliar with "Windows Bitcoin Miner" and most are just malware. You can't just download a miner anymore, you need to buy special hardware in order to do any Bitcoin mining. I would suggest that you reinstall your OS as your computer is probably infected with malware (then again which PC that is running Windows isn't ? ).