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4781  Bitcoin / Bitcoin Discussion / Re: Does bitcoin have the possibility of hitting $30K before the end of the year? on: March 24, 2018, 06:34:43 PM

Now it seems like the market correction and retracing is over.

While i truly hope that this is the case, i think you shouldn't be too sure that this correction is over.
Bitcoin has told us in the past that bear markets lasting 1-2 years are possible. This is, of course, no indicator for the future.
But BTC has proven to be stable in terms of mechanism/security. So future gains and bull markets will come. Wether it will be in 2 weeks or 2 years can't be said.




Do you think bitcoin has the capability to hit the $30,000 mark before the end of 2018?

The capability? Definetely.
But wether it will happen? I'm not sure about that. I'd be happy if this would happen. But i wouldn't be disappointed if it won't happen by the end of this year.
4782  Bitcoin / Development & Technical Discussion / Re: Help Multi check balance of bitcoin address on: March 24, 2018, 05:56:48 PM
large size 2GB Address / about 30MIL
difficult to for check
Do you have any solution?

You might try to install bitcoind (including whole synced blockchain) and use RPC calls to check the balance of the addresses after importing them.

The command you should enter is:
Code:
importaddress <address> "" false

This will import the address as watch-only. The false is needed for core not reindexing right afterwards(can take a long time).

After you have imported all addresses you can restart bitcoind with the -rescan startup flag.


Wrap it into a small shell/python/whatever script and you shouldTM be good to go.

But don't know how long this will take and if this even works with that amount of addresses. You might consider splitting those into smaller chunks.
4783  Bitcoin / Development & Technical Discussion / Re: Help Multi check balance of bitcoin address on: March 24, 2018, 03:48:25 PM
The easiest would be to write a small script and check the balance via public API.
This is especially recommended if you are already generating/retrieving the addresses via a small script/tool.
There are several online services available which offer such an API for free.

For example:

4784  Bitcoin / Bitcoin Discussion / Re: Is Bitcoin going to be forever pump and dump? on: March 24, 2018, 03:41:55 PM
It will be as long as there are people who hold thousands of coins and are able to influence the market for their own benefit. To stop it from being artificially pumped we'd either need people to stop reacting to sudden dips, which we know is impossible because people are people, or we'd need the whales to stop playing the market, which is also impossible because they want to make money and are finding it easy to. Redistribution of wealth? Somebody tried that once and failed...

I think thats the part we should begin with.
I don't think its impossible to stop whales from manipulating the price.
With regulations (at some point there have to be regulations on the way to global adoption) and the consequent higher liquidy
including non-anonymous trading of massive amounts of BTC's, whales won't be able to manipulate the market.

This is definetely not an easy task and won't be achieved in short term. But we are still in the early stage of BTC.
4785  Bitcoin / Bitcoin Discussion / Re: Is Bitcoin going to be forever pump and dump? on: March 24, 2018, 02:18:45 PM
Expect more pump and dumps for a few more years.

This depends on the interpretation of 'pump' and 'dump'.

Bitcoin (and all cryptos) are more volatile than any other asset you can easily invest in.
Long sideway moving is not the most common thing in the crypto sphere. So of course it is going to go either up or down.

Was the 2017 bull run a 'pump' in your terms? A 1-year-pump?
And do you then also regard the correction afterwards as a dump?

Because if you answer both of these questions with 'yes', then there will be more 'pump and dumps' coming.
But pump and dumps like often happening with low cap altcoins aren't happening with BTC.
4786  Bitcoin / Bitcoin Discussion / Re: Technology should make things simple! on: March 24, 2018, 02:07:12 PM
I also don't understand why the price of it is so high, when it just a simple token similar to RSA tokens.

A RSA token generates a one-time password based on the timestamp and a private key using an AES algorithm.
RSA tokens usually don't have any encryption inside. They are only used for authentication.

The nano s is a hardware wallet which is capable of signing different transactions using different signing algorithms and addresses.
Additionally it gives you the opportunity to check the details on the screen and confirm via buttons. It has a smart chip built in and the seed stored encrypted inside.
The Fido U2F application is comparable to the RSA token.

There are quite a few differences between those two products which justify the price of the nano s.
4787  Bitcoin / Bitcoin Technical Support / Re: Is blockchain 100 percent safe? Can the bitcoin transaction be trustful? on: March 24, 2018, 01:56:47 PM

-Private key security: The user's private key is regarded as the identity and security credential when using blockchain. It’s generated and maintained by the user instead of third-party agencies. An attacker could "recover the user's private key because it does not generate enough randomness during the signature process. Since the blockchain is not dependent on any centralized third-party trusted institutions, if the user's private key is stolen, it is difficult to track the criminal's behaviors and recover the modified blockchain information.
Many security experts wonder if SHA-256, which contains the same mathematical weaknesses as its shorter, very much related SHA-1 precedent, is a concern for bitcoin and blockchain (both usually use SHA-256). The answer is not right now. SHA-256 is strong enough for the foreseeable future. More importantly, since most of the world’s financial transactions and HTTPS transactions are protected by SHA-256, when someone breaks it, we’ll have far bigger things to worry about than just bitcoin and blockchains.

The 'security' of private keys is not only dependent on the hash function used.
The algorithm used to generate the public key from the private key is the ECDSA [1].

Nonetheless both, SHA-256 and ECDSA, are regarded as safe to use.

Up to today there hasn't been found a single SHA-256 collision.


[1] https://en.wikipedia.org/wiki/Elliptic_Curve_Digital_Signature_Algorithm
4788  Economy / Economics / Re: Will future paper money disappear? on: March 24, 2018, 01:48:42 PM
Even with the widespread usage of cryptocurrency in the world be on top, the existence of paper money in the future is big.

I disagree with that statement.
In my opinion printed money will be abandoned sooner or later.

Im not saying that governments are going to declare BTC as primary currency (which they won't, since they always want to have full control).
But i am pretty sure that printed money will go away. It won't be tomorrow and not all countries are going to abandon paper money instantly.
But this is a part of evolution.
Wether (centralised) crypto currencies or simple credit cards are going to replace it can't be told for sure.



Solely because the government won’t allow this to happen, sooner or later this issue will surface and this decision is fiercely political. The chance that every country will implement such policy is at 0.1% in my opinion.

The government would have a lot more control with a crypto currency created by themselves (e.g. something like ripple) or with credit cards only
than with paper money. Printed money is way too unsecured regarding counterfeiting.
How you come up with the 0.1% is a mystery for me.
4789  Bitcoin / Electrum / Re: Newbie question about cold storage electrum wallet: how secure my method is? on: March 24, 2018, 01:15:07 PM
Is this juggling with files and USB's something that could pose a danger? For example, is it possible that I somehow transfer a virus via USB to my cold storage computer?

This definetely can be a danger to your cold storage.
Every single interaction/interface between your cold wallet and your online-connected device poses a danger.



The worst case scenario would be that the virus managed to create an address that was somehow predictable and your addresses are weakened.

This would require to download a malicious version of electrum (with a smaller key space) or it would require the malware to somehow influence the entropy of electrum before the wallet is created.
This is one of the less-probable versions of a malware one would encounter.
4790  Bitcoin / Mycelium / Re: Forgot Mycelium PIN on: March 24, 2018, 11:44:09 AM
I had the exact same thought when I first read about the clear text PIN storage. But, the PIN is only 6 digits. Even if it would be encrypted, with only 1 million possibilities, a brute force attack would be possible anyway.

You are right with that.
Mobile wallets shouln't be regarded as secured wallets.
For me, it doesn't matter whether everything of the wallet is perfectly encrypted on the mobile or the pin is stored in plain text.
I only use mobile wallets for small amounts im fine with losing. As long as your mobile is not rooted its 'relatively' safe (for small amounts).


The only way to prevent this would be using a much longer password, or slow encryption (especially on old phones)

I don't think slower encryption would help at all.
Files can always be moved onto a new PC and be cracked there with multiple graphic cards.

Choosing a 'slow' encryption won't stay 'slow' for a long amount of time, since the technology evolves at a fast rate.
4791  Bitcoin / Development & Technical Discussion / Re: Lightning Network on: March 24, 2018, 11:29:26 AM
Zap seems the best looking one and pretty easy, unless i didnt miss something: "All Zap releases will be testnet only until further notice"

Zap can be configured to run on mainnet.

You simply have to open the folder ../lightningnetwork/lnd and edit one line of the file chainparams.go from

Code:
var activeNetParams = bitcoinTestNetParams

to
Code:
var activeNetParams = bitcoinMainNetParams 


Additionally you have to add this to the file:

Code:
var bitcoinMainNetParams = bitcoinNetParams{ Params: &bitcoinCfg.MainNetParams, rpcPort: “8334”, }



For a full guide on how to set up zap on mainnet you can take a look at this: https://medium.com/@zaptrem/mainnet-lightning-run-lnd-zap-desktop-on-windows-f73cf78dd633
4792  Bitcoin / Bitcoin Discussion / Re: Technology should make things simple! on: March 24, 2018, 11:14:19 AM
alternative to other methods of doing things. I did the latest Firmware upgrade for the Ledger Nano S today and it was a
absolute nightmare. Luckily for me, I have a vast IT knowledge and also very good troubleshooting skills, but the average
computer user would have thrown in the towel.  Angry

What happened? Usually updating firmware works without any flaws.
Sometimes the OS is kinda 'messing around' with your USB devices.



Why would someone go through all this stress to upgrade firmware manually, if they could simply use cash or credit cards?
Our alternative, should be the best solution and the easiest to use, not the other way around.  Angry

Well.. i don't use BTC because its the 'easiest'.
The 'easiest' is for the old and fragile people. Without challenging your mind it will degenerate as fast as a LN transaction.
BTC is made to be the only one in control of your money while at the same time allowing fast transactions around the world.



Good luck to the other Ledger Nano S owners, this is going to test your patience.  Roll Eyes

Already updated my nano s. Was done within 15 seconds.
What about explaining what happened? Did you find out what caused your issue? I doubt it was ledger's fault.
4793  Bitcoin / Development & Technical Discussion / Re: What is HardFork, SoftFork? on: March 24, 2018, 11:09:14 AM
For example if there was a soft fork to reduce the block size to 500kb from 1MB, then the old rule of 1MB blocks will become invalid,

A change of the block size can not occur in a soft fork.
A soft fork is defined by being 'compatible' with older nodes.

Bcash, for example, did simply increase the block size to 8mb. This occured in a hard fork.

Bitcoin on the other hand increased the amount which can fit into a block by introducing SegWit.
This happened through a soft fork. This works because transaction structure has changed and the witness data can be stripped off for older nodes (1MB limit).
Therefore no consensus rules get broken 'in the eyes of' older (non-updated) nodes.
4794  Bitcoin / Bitcoin Technical Support / Re: I've been fight the core download for months on: March 24, 2018, 09:41:32 AM
Do you think it would be better to rename the bad block rather than delete it? I'm not sure how SSDs work, but in the past when using HDDs, I've found it better to rename the file to prevent a bad sector on the disk being reused
.
SSD's have a micro controller which manages the access to the memory cells. Broken cells won't be used anymore for storage.
SSD's have more cells than actually 'needed' to achieve the promised capacity. Those start getting used when old cells die.
Renaming the block instead of deleting it would just use space (unnecessarily).


for reference: a small picture of a 'typical' SSD controller:

4795  Bitcoin / Bitcoin Technical Support / Re: I have my wallet.dat from a backup but I can't remember my passphrase on: March 24, 2018, 09:33:16 AM
Ok guys you have to read what i wrote, because i'm repeating the same thing again and again...

You have to admit that you seem to
1) not understanding our questions and not answering them properly
2) tell contradictory stories/information
3) be unable to read yourself





Yes i have a CSV file of key call electrum_private_keys. When i try to create a new wallet, using the option "importing bitcoin adress", it doesn't work, when i use my file, or when i copy , paste one or several adresses of the file.

The Button "Next" stay gray and i click on it.

Can i use my file to get something on it ? What can i do ?

You should maybe start reading the thread. You question has already been answered the first time:

I have a csv file with private keys. Can i use it ?
You can import/sweep all of your private keys into electrum.
Look here for a short guide on how to import your private keys: https://bitcoinelectrum.com/importing-your-private-keys-into-electrum/





It seems like you are either a bit confused on how to click on a link and read the small guide for about 3 minutes
or you simply don't understand anything at all. In this case please clarify what EXACTLY you don't understand and/or doesn't work.

We try to make it as easy as possible. Even monkeys could understand this if they were giving concrete information about whats going wrong.



4796  Bitcoin / Bitcoin Technical Support / Re: Lost or Stolen Bitcoin, please advise on: March 24, 2018, 09:19:40 AM
One thing that you know is that you did not send the bitcoin <with a typo> to a address without a owner. <because the bitcoins have been moved by the owner of the other address to another adress>

If it was a random address and it had a owner, ..

It is pretty unlikely to send coins to an address with a typo. Addresses include a 32 bit checksum.
This means: 1 out of 4.294.967.296 addresses with a typo included actually is a valid address.

The chance of misstyping an address and the address still being accepted because its valid, are less than 0.00000002 %


Now multiply that probability with the probability of sending to a random address which does have an owner.
You could pretty much say thats 0 chance.
4797  Bitcoin / Mycelium / Re: I found a bug (March 21, 2018) on: March 23, 2018, 07:17:31 PM
I didn't create the second hd account from the first one.  The two accounts have different seeds.
The second account in this case is not a sub-account of the first one.  It is a new account with a DIFFERENT SEED.

If you created an account within mycelium it will get derived from your master seed including a 'counter'.
Did you create it within mycelium or did you import it?



Mycelium can run two (or more) wallets with different seeds, but only exports the seed of one of them.
That's a bug, and there's no use mincing words about it.

Mycelium does export the seed created within the application (which is enough to retrieve all HD accounts create within the app).
For imported seed mycelium states that there has to be a seperate backup stored. Thats not a bug imo.
4798  Bitcoin / Bitcoin Technical Support / Re: Is it safe to make direct payment from my Hardware Wallet on: March 23, 2018, 10:27:22 AM
Regarding Sewig address on my Nano Ledger, there are only two real type of addresses:  bitcoin legacy and Sewig.  

Actually there are more types of 'addresses' than legacy and segwit.
P2PKH (starting with 1..), P2SH (starting with 3.. (multisignature)), P2WSH nested in P2SH (nested segwit, starting with 3..) and bech32 ('native' segwit; startin with bc1..).
The nano s supports P2SH/P2WSH. Thats definetely better than P2PKH addresses but not as efficient as bech32.

based on criteria of segregated witness (segwit) adoption, we can separate them to two types: legacy and segwit
P2SH is considered as legacy address and P2SH-wrapped segwit as segwit address
P2SH-wrapped segwit is backwards compatible with the legacy P2SH address format
while native segwit (bech32) is non-backwards compatible format


While it is true what you are saying, i have to partly disagree.

Anarc Senior was refering to the ledger nano s' types to choose from an address format: P2PKH (called 'legacy' by ledger) or nested P2SH (called 'segwit' by ledger).
While it is not wrong to call them legacy and segwit, the types of addresses are P2PKH and P2SH.

Additionally you can't tell for sure whether a P2SH address is 1) multisignature or 2) nested segwit until the UTXO's are spend and the redeem script is revealed.
4799  Bitcoin / Hardware wallets / Re: Ledger Nano basic use on: March 23, 2018, 10:12:33 AM
Now I can get to the page to install or removed the apps for the various types of crypto coins.  The only active buttons are to install and remove those apps. 
~snip~
Scroll the Ledger screen to show LiteCoin and press both button.  The computer beeps and displays the screen with instructions:  To begin, connect your Ledger Wallet.
It already was connected and the pin accepted.
Ok, disconnect and enter the pin again
Do that, scroll to Ethereum display and press both buttons.
The Ledger is scrolling:  vires in numeris
Strength in numbers.  Ok, cool.  Now how do I get it to communicate with the app?

Thats the Ledger manager application (required for updating your nano s and installing applications onto your nano s).

You further need to open a wallet app to access your cryptos. If you want to open your ETH wallet you have to either
1) open the native ETH wallet from ledger [1] or
2) use a 3rd party wallet to access your coins via the ledger (e.g. MyEtherWallet) [2].

Generally you have to follow this to access your coins:
  • Open the wallet application on your PC and wait for the 'To begin, connect your ledger wallet' screen
  • Plug in the nano s using the cable it got delivered with (or any other cable which does have pins for data transfers; i.e. not power-only cables)
  • Open the crypto application on your nano s
  • Enjoy accessing your cryptos safely

Did you try those steps in this order?


[1] https://chrome.google.com/webstore/detail/ledger-wallet-ethereum/hmlhkialjkaldndjnlcdfdphcgeadkkm
[2] https://www.myetherwallet.com/

4800  Bitcoin / Electrum / Re: Bitref and Electrum balances not matching on: March 22, 2018, 06:54:33 PM
From mainpage of bitref:
Quote
Data Source: Blockchain.info

Since blockchain.info mostly(!) shows correct information and electrum too, i think both are showing the correct amount.
Bitcoin transactions are always made of unspent transaction outputs (UTXO) which have been 'assigned to your address' in a prior transactions (technically not correct, but should be easily understandable).

This means:
If you receive 1 BTC and send 0.1 btc to another address the transaction will have 1 input (1 BTC) and 2 outputs (0.1 to your destination address + 0.9 to a new change address of your wallet) (ignoring the fees).
In this case electrum will show you a 0.9 btc balance (which is correct) and some blockchain explorer will show a total amount of 1 btc sent (which also is correct).

For more information and a more insight sight you can look here: https://en.bitcoin.it/wiki/Change

I'd still recommend a better blockchain explorer (e.g. blockcypher, blocktrail, btc.com or blockchain.info (where BitRef is scraping the information from)).
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