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News: Latest Bitcoin Core release: 27.0 [Torrent]
 
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21  Local / Other languages/locations / Re: Српски (Serbian) on: October 27, 2018, 09:55:07 AM
Sta bi sa ovim threadom ovih dana?
Kao da je bio unpinovan sa language boarda.
22  Bitcoin / Bitcoin Technical Support / Re: noob question about `bitcoin-cli getnewaddress` on: October 27, 2018, 09:53:11 AM
OP is using Bitcoin Core, as seen in headline of this topic.

You can generate an address however many times you like. Each time you run that command on newer versions of Bitcoin Core, you will simply get an address that was already generated in your wallet (HD wallet). You have couple of hundreds, I think, already generated and another batch is likely generated once these run out.
23  Bitcoin / Development & Technical Discussion / Re: Is it possible to intentionally not submit a share that solves the block? on: October 23, 2018, 11:01:15 PM
Yes, this should be possible, but you really can't gain nothing from it.
Any effort that you spend in setting this up is better spent anywhere else, unless you simply don't like mining for pools due to centralization issues and still want to be in a Bitcoin mining business.
24  Other / Serious discussion / Re: Your Ideology Affects You what Tokens to Support? on: October 19, 2018, 10:01:38 AM
If you don't invest based on what you believe in, then how do you expect your investment to do well long term?

Investing short term is fine if you are a trader, but I don't think day traders need to know anything about project's ideology to try and make few cents on daily ups and downs.
25  Bitcoin / Bitcoin Technical Support / Re: Lost transaction. Need help. on: September 29, 2018, 01:31:01 PM
You can use "abandontransaction" command in bitcoin-cli to remove that transaction as if it didn't happen since it is not included in no blocks, neither it is in the mempool.

You should investigate though why it didn't get broadcasted to the network.
Are you sure bitcoind is connected to the network?

Use getpeerinfo command to get the list of your Bitcoin peers with bitcoin-cli.
You should have 8 outbound peers.
26  Bitcoin / Bitcoin Discussion / Re: Bitcoin Testnet under Attack on: September 27, 2018, 04:26:16 PM
Don't have much idea on this, but i feel if it's a testnet coin, it shouldn't cause much of a panicking since it won't be much of a threat to the mainnet. Testnet coins can only be used on the testnet for testing and can't be tradable for altcoins or usd.  Like I said don't have much idea but I stand to be corrected if my assumption are incorrect.

The issue isn't that testnet is being harmed or anything, but that it would prove that vulnerability is not too hard to exploit, just perhaps to risky to be profitable on mainnet.
27  Other / Serious discussion / Re: misleading marketing from bitcoin[dot]com culprits on: September 27, 2018, 11:57:38 AM
This is nothing new. They straight out lie on their main website offering to sell bitcoins while actually giving you Bitcoin Cash.
We had some new users on this forum a while ago that bought "Bitcoin" from bitcoin[dot]com and had some problems with using their "bitcoins".

Is Bitcoin a trade mark? I guess not. And this is the problem.

If Bitcoin would have been a trade mark, then there would have been a way to beat these frauds. But as the things go, I would not even get surprised if they register the name and make us not use it.

I wish I could be more optimistic...  Undecided

I don't think government intervention is the solution here. This is exactly what they want.
Government should stay out of this, as well as entire cyberspace in my opinion.

Verbal issues should be solved verbally.
28  Bitcoin / Development & Technical Discussion / Re: Isn't doing % N while generating a random key a flaw? on: September 26, 2018, 06:28:25 PM
It isn't a big issue.

This just means that those 432420386565659656852420866394968145598 first numbers are twice more likely to occur in the generator then they would naturally.

If you pick a random number between 0 and 2256, there is 1 in 2120 chance that it will be in the range between 0 and 2136. Due to this suboptimal behaviour, it will be 1 in 2119, so not a big difference when it comes to security.

So as an attacker, you would likely want to start by searching that keyspace first at the beginning, although the key will be there only once in 2119 keys that you try to break, but it is still a bit more likely to be there then any other range of same size in that keyspace, so it is a nice optimization technique if you are braking a lot of keys.

Technically it is a flaw, since using this for an attack is slightly better then brute force, but I assume many brute force implementations would have this optimization by an accident, simply because it makes sense to start at the beginning, perhaps, if the numbers are random.
29  Other / Serious discussion / Re: The U.S. Election Hacks, Cybersecurity, and International Law on: September 26, 2018, 12:32:50 PM
It's obvious Russia is engaging in cyber warfare. What do we do? Engage in more warfare online? Turing forums into battlegrounds?

Name me a superpower that isn't...

Every big country does this, don't think that US doesn't. They freaking invented it.


I can't give you a name of those who don't, but I can give you a name of those who do:
https://en.wikipedia.org/wiki/State-sponsored_Internet_propaganda
-snip-

We are talking about cyber warfare here, if I am not mistaken.
Although US gov does a huge amount of propaganda, that is the least of the worries when you talk about cyber warfare, since you can always choose not to believe something.

The problem with any type of warfare is that civilians often do not have a choice in it. They just have to worry to survive it.
US govnt, as well as other superpower's governments, regularly gets involved in hacking, destroying, spying of civilians as well as other governments, including it's allies.

There is no comprehensive list about these things, they are top secret until some government employee leaks them.
They include cyber warfare that is illegal by International law, as well as national law inside that country.

They are all criminals. A superpower can not exist if they don't break the law to stay at the top.
It is a jungle, not a superhero movie. The fact that people believe that there are heroes in this story is the work of that propaganda, the rest is just blatant warfare and human rights abuse.
30  Bitcoin / Development & Technical Discussion / Re: Bitcoin and C++ on: September 26, 2018, 11:35:12 AM
C languages are one of the most popular and efficient programming languages that are used today, so I would rather ask a question, why not?

Bitcoin Core can be quite a resource intensive program, since it is verifying all the transactions on the network and downloading all the blocks.
Using something like Java, whose VM can be quite memory greedy or script languages, such as Python, that do not compile to machine code, wouldn't be the right fit.

We need something fast, powerful and very familiar to the open source community to use as a reference client for the Bitcoin network.
C++ is a right fit for that.
31  Bitcoin / Development & Technical Discussion / Re: Questions for developing application for bitcoin on: September 26, 2018, 10:32:33 AM
In order to get balance for an address that isn't in your wallet in Bitcoin Core, you need to import it first and do a rescan of the blockchain.

You can use importaddress command for this, which will by default do a rescan automatically once the address is imported, unless specified otherwise in an argument.

Furthermore, when checking the balance of an address with getbalance command, you need to set include_watchonly argument to true, in case you imported an address without importing it's private keys.
32  Bitcoin / Development & Technical Discussion / Re: Why explorers have problems with segwit address? on: September 23, 2018, 12:14:02 PM

You can trace them of course, like any other Bitcoin transaction. It is just that most block explorers don't show much info about them.
The network still has to know where those funds are, so they are still part of the public blockchain.
33  Other / Serious discussion / Re: One day we will produce so much clean free energy it will become a "problem". on: September 23, 2018, 11:42:46 AM
Tesla is just one company, oil industry is still a lot bigger and more powerful then Tesla.

I do understand you point though, Tesla is giving a good example and others will likely eventually follow, but for now we are still a long way from that.
34  Bitcoin / Development & Technical Discussion / Re: Is colored coins still in use? on: September 23, 2018, 10:37:34 AM
Yeah, they are still in use.
Bisq (P2P exchange) should be releasing it's BSQ coloured coin soon.

If you need a coin to represent an asset, such as merit in some project, then coloured coins are better then building another blockchain just for that.
There is no need for everyone to run their own blockchain, we got Bitcoin, just use that.
35  Bitcoin / Development & Technical Discussion / Re: The duplicate input vulnerability shouldn't be forgotten on: September 22, 2018, 10:19:05 PM
Yeah, what are the chances of this never happening again?
Very small, we need to accept it. Better a fork then a complete failure.

The way I see it we need to start doing 2 things as a community:
1) Operators that are running full nodes that want to contribute more to the network should start running more nodes with different implementations.
2) We should connect our nodes to nodes running different implementations and have warnings pop up in case of a chain-split.
3) We need more good quality implementations.

Even this will not protect us 100% from a potential network-wide vulnerability, but it is a hell of a lot better.
36  Bitcoin / Bitcoin Technical Support / Re: Best way to create watch only wallet? on: September 22, 2018, 09:46:30 PM
Well I mean, I can write a sh script for you, if you want.
Just run "bitcoin-cli getnewaddress" a thousand times, store it in file, and run "bitcoin-cli importaddress" on those addresses.

Is that what you are trying to achieve?
37  Other / Meta / Re: How can someone restore their "Trust"? on: September 22, 2018, 08:22:43 PM
In practice you don't restore your trust, you just create a new account that isn't marked.

The system is unforgiving, that is true, but if you really are helping people, it is possible that you will get merit for it to rank up eventually.
38  Other / Serious discussion / Re: The U.S. Election Hacks, Cybersecurity, and International Law on: September 22, 2018, 02:15:57 PM
It's obvious Russia is engaging in cyber warfare. What do we do? Engage in more warfare online? Turing forums into battlegrounds?

Name me a superpower that isn't...

Every big country does this, don't think that US doesn't. They freaking invented it.
There are no good and bad guys here, those are just factions.

International law goes both ways. Only time when International law is useful is if you are exempt from it while others aren't.
Don't worry, International law never meant sh*t. It is just an excuse for veto powers to do what they want.

Country A goes in legal warfare with country B. Veto power steps in, makes a deal with one side, declares the war on other without being attacked first.
Veto power in UN is charged with illegal warfare for attacking a country without the need to defend itself, veto power vetoes any action to be taken against it in order to punish it for it's crime.

Welcome to 21st century...
39  Other / Off-topic / Re: $10,000 dollar reward being offered + Flat earth and how it relates to Bitcoin on: September 22, 2018, 01:36:27 PM
If you are looking for absolute irrefutable proof about anything, you ain't gonna find it.
Welcome to the real world.

You can start by trying to prove that you exist in the first place, let along that the Earth is round.
40  Bitcoin / Development & Technical Discussion / Re: The duplicate input vulnerability shouldn't be forgotten on: September 22, 2018, 01:05:01 PM
I agree with DooMad completely. Diversity is the only real solution to network security.

We have to deal with the fact that bugs are found in absolutely ALL software.
Only thing we can hope is that it is: A) rare that bugs are found in all software at the same time and B) that no single entity will likely have all of these bugs at that time.

You can put million top tier devs on the code and they will still let a bug go through every few decades,
Security of the entire Internet isn't that there is low level code that is perfectly secure, but that there are many different systems and implementations running it. You need to have more implementations to have any chance of long term survival.
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