First you have to download a tool which can generate a public-/private key pair for you.
You can go to https://www.bitaddress.org to do so. But make sure to download this site and run it offline (preferably on a linux machine).
Then print the paper from a printer connected to your offline pc. Then you can send money to your public key (withdraw it from your exchanges).
To spend your funds you have to import the private key into a wallet. This should only be done on a safe machine.

Are you able to read? Do you know how to use google?
Just read my Post:

This is probably due to the buggy jaxx wallet.
"Bitcoins" can only be spend completely. Partial payments are not possible.
If you have 1 BTC for example, and want to send 0.2, then the TX looks like this:
Input1: 1 BTC
Output1: 0.2 BTC
Output2: 0.8 BTC, where Output2 goes to a change address automatically generated by your wallet.

I would recommend you to do the following:

• Export your private keys out of the Jaxx wallet
• Import your private keys into an usable wallet (e.g. electrum)
• Send your coins to a new address/wallet  (for security reasons, you don't want to have your private keys floating around in your ram giving attackers free money)

Its not necessary to post the TX id. (DannyHamilton doesn't like to see people giving up their privacy!  )

If you just want to test some stuff out you don't really need to download the whole blockchain.
Theoretically you don't even have to download any blockchain.
For such purposes you can use bitcoin testnet box (https://github.com/freewil/bitcoin-testnet-box).
It will create a private btc network on your pc with 2 nodes being connected to each other.
Additionally you don't have to wait for any blocks to be mined, since you can easily just generate new blocks with "make generate"-command.
Or you can use the regtest mode which also creates a private blockchain with the same rules as testnet (and block-generating-feature).

There are quite a few reasons for ledger/trezor not to support every forked shitcoin, but thats a different story.
With ledger/trezor you will always be able to claim your coins by importing the BIP39 mnemonic seed (12/24 word phrase) into another compatible wallet,
and use the generated private keys to 'claim' your forked coins in their appropriate wallet.

But this should be done carefully. After typing your seed into your pc you should regard your wallet as compromised.
So to be on the safe side, first send your BTC to a new wallet, then import your old priv keys to the fork-coin-wallet software.

Because BTC and BCH use the same address format. Your address (or to be more specific: priv-/public keypair) is valid on both chains.
The exchange can't know you used a BCH address to recieve BTC, since its a btc address too.
Usually this isn't a big deal since you can just import the private keys into your BTC client and your funds were available.
But since you were withdrawing amount to another exchange (without you having the control of the privat key), you have to contact polonienx.
They are able to recover your funds, but this will probably cost a small service fee (if they even going to do this for you, they could just keep the 5k).



No need to get cocky 12 minutes after posting this thread. Its your personal fault. You have to look at what you are copying and not just blindly copy/paste everything you can click with your mouse.


^This.

Next time just start a new topic.


As far as i am concerned, bitcointools is for bitcoin and reddcointools is for reddcoin ?
We need a few more information about how this error occured. Did you just run a tool? Or did you write a script?
If you wrote a script by yourself, then as the error message is stating: There is an unexpected character (where it shouln't be).
If you could post the snippet of your code where the error appears, it would be much easier to help you.
If you just ran a (downloaded) script and you get this error, then the tool is 'broken'. But still.. a code snippet would help to find the mistake.

This mostly depends on the amount of work which is put into extracting the data.
But the police forensics (here in my country), has special tools which extract data directly from the memory cells.
So the SSD is taken apart and those cells will directly get attached to their tools to read the data out, bypassing any controller.



This is so true.



SSD's are bitches. You shouldn't do any further damage with just copying the HD, but there is still a risk.
If you have considerable money on this hard drive, i wouldn't mess with it. Professionals are the only ones which can help you in this case.



Never heard of any from this software. But this doesn't mean that its not good.
A forensics surveyor once recommended me ddrescue (https://en.wikipedia.org/wiki/ddrescue) for such cases.

There is an app of coinmarketcap available on the playstore. At least for android, im not sure about IOS.
But the interface of the app is pretty smooth. Updates are going pretty fast and you have the option to mark coins as favourite.
You can then easily go to the fav-tab and only look at the coins you are interested in. Viewing charts, setting alarms, everything possible.
No need to visit the website from mobile phone.. because..ye.. this is really unwieldy.

Playstore: https://play.google.com/store/apps/details?id=com.kyriakosalexandrou.coinmarketcap

Here is some math for you:
The size of the dictionary trezor uses is 4096 words.
Since you are using a 12 word seed there are 4096^12 possible combinations, thats roughly 10^43.
Now if you take antpool (as the biggest btc mining pool) with about 1000 PH/s, thats rougly 10^18 combinations per second they could check.
This means antpool would need ~10^25 seconds to crack your seed.. thats roughly 1.000.000.000.000.000.000 years.
This ofcours presumes you are using a randomly generated seed. A brainwallet with more possible combinations is still a lot(!) weaker because human brains are 0 random.



Wallet.dat files are way less secure than a hardware wallet, initialized with a random seed. It doesn't always have to be an attacker.
But bits can flip on your hard drive. And files can get corrupted during almost everything (in windows). Its not always about bruteforcing and cracking.

The Bitcoin Chrome App (and every other app by ledger) is just an interface to 'speak' with your nano s.
So yes, you just have to buy another one and initialize it with a new seed (the ledger nano s automatically generates a new random seed upon initialization).
They will be completely seperated and there is no connection between those two nanos.
Not sure what you mean with 'account'. You can create several accounts in a ledger nano s. This is for coins not getting 'mixed up' between those two accounts.
But those two ledgers will be completely different wallets, if thats what you meant with account.

I can't believe i just read that.
In which universe is bitcoin core the most secure wallet? - definetly not in this one.
Every desktop wallet contains the huge risk of being vulnerable to malware of any kind.
Whether if its malware which is directly aimed at this wallet, waiting for you to unlock it just to steal all of your coins, or
if its the 'every-day-'malware (steal clipboard, copy/paste virus, search for wallet files, ... ) which is going around in the wild for quite some time now.

A desktop wallet in a safe environment is fine when storing some coins.. but for anything which exceedes a multiple of the price of a hardware wallet
i wouln't trust any desktop wallet (or any (especially) windows pc).

For everydays use:
Mobile wallet / Desktop Wallet

For anything above X coins (replace x with the amount of coins you would not want to lose to a stupid script kiddy because of a windows or java exploit):
Hardware or Paper wallet
Hardware wallets cost about 60$+ but are pretty handy for everydays usage and Paper wallets are basically free but not that handy when spending funds from them.

You may should think about how you are spreading the risk.
I don't really see a reason to buy a second HW wallet. Im not even sure if thats more secure than only having one.
I understand why you wouln't want to keep all of your coins on one address. But 1 HW wallet is enough.

You must think about the threat you are exposed to. If you fear from getting malware on your pc.. then 1 ledger is as safe as 2 are.
If you fear of someone cracking your private key.. there is also no difference between owning 1 or 2 ledgers.
In case of a fire both get destroyed. (Yes, you could store them seperately.. but you also could do this with our seed-sheet)
The only case, i see, where 2 ledgers would be better is when you get robbed. In this case you can hide 1 and only give up the other (seed or device).



Of course. There is no reason why this shouln't be possible.

This step is giving you more safety when sweeping your private keys, but i wouln't fully trust on that.
Github repositories get 'hacked' a lot lately and since hashes are often posted there too.. thats not always helping.

I would add a few extra steps into retrieving your coins.
After you dumped the private keys out of your core wallet you should first make sure the PC you are going to insert the priv keys to is not compromised.
Don't completely rely on AV software. Its not hard to sidestep these AV's.
If you are storing big amounts i would recommend to import the priv keys into an offline linux machine. Create/sign a transaction to your new (safe) address
and move to an online pc to push the TX. That way you can be sure no stinky malware is waiting for your private keys to appear in the clipboard/ram/... .

1. The ledger and trezor are both fine. Its more about which you find more appealing. For me its the ledger.

2. You 'transfere' BTC as you would always do: send them via transaction. You can try sending a small amount first, but generally don't have to if you don't misstype the address.
And yes, lower fees (generally) mean your TX will get confirmed later. To get an estimation you can use sites like https://bitcoinfees.earn.com/.

3. Mnemonic seeds are the most comfortable way of storing the seed for your wallet (and all priv-/pub- keypairs which can be calculated out from it).
Security-wise it doesn't matter whether you have 12 or 24 words.
And yes, you are right. The one who owns the mnemonic seed, owns the bitcoins.
People don't even have to steal your notebook to get malware on it. This can be 'easily' done across the internet.
You can't always stay safe just without downloading stuff or stop surfing. Exploits are real and will always be.

4. You have options to choose among recommended fees, but you can set your own too.

5. Such things can happen. Thats why you need to store your mnemonic seed as backup.

6. You an always insert your private keys into any other wallet, since they are using BIP39-seeds.
But after that your hardware wallet should be looked at as compromised.
If Wallet provider are going to support forks (and altcoins) are completely up to them.



I don't know how bitlocker works and which encryption algorithm it uses. But as long the password is safe, your keys should(!) stay safe. Presuming you never decrypt the file.



I would recommend a HW wallet over a desktop wallet everytime. Exceptions would be an air-gapped PC, only used for signing transactions.



True.

Generally it would be kinda easy to recover most of your files. But since you mentioned everything was stored on SSD's thats a completely different situation.
The first steps to start working on a hard drive in a forensic mean is to make a forensic correct backup.
On a HDD you would have simply to plug it into a linux machine and run the dd command to create such a forensic backup, or better: 2 (https://en.wikipedia.org/wiki/Dd_(Unix)).
Afterwards you should only work on the 2nd copy and let the original disk stay unused (every single action could "destroy" the information on the memorycell containing your private keys).
If you have stored large amounts of BTC i would recommend a write-blocker, to be on the safe side (http://www.forensicswiki.org/wiki/Write_Blockers).
If you indeed have large amounts stored and don't want to mess up, i would advise you to look for someone in your local are who is a specialist at forensics.

Thats the solution to your problem. But if you have stored 'larger' amounts of BTC on this old wallet you may be more cautious when doing this on your everyday-pc.
There is always the risk of malware waiting to grab private keys out of the ram/clipboard and stealing funds.
The safer way would be to (initially make a backup of your wallet.dat) use a bootable linux disk to do the dump/import of your priv keys.
Either with the core (linux-)wallet or pywallet. There are quite a few tutorials available online.

And to awnser your initial question: It doesn't matter whether you copy/paste your file or 'drag' it into another location.

Since you were testing to send 0.0001 btc there has been created a change address (as already mentioned above).
The listaddressgroupings command therefore shows at least 2 addresses.
You have to import all of your private keys after dumpprivkey into electrum. But please only do this on a clean machine, preferably not on the everyday-use-windows-pc.
If this doesn't work you could try Pywallet to dump the keys (https://en.bitcoin.it/wiki/Pywallet). But make sure to create a backup of your wallet.dat before using pywallet.

When you start initializing an address in your wallet (or when you create an address by your own) what basicaly happens is that your PC will randomly(!) generate a private key (following rules, ofc.).
Out of this private key you can calclulate your public key (an address is the 'visualisation' of a public key). This is a one-way-function. This means you can generate the pub key out of the priv key easily..
but its (in human terms) not possible to calculate the priv key out of the pub key.
And as already mentioned.. Noone needs the private key to verify anything signed with it. You can verify signatures from a private key with the corresponding public key.
I would recommend you to read a bit about asymetric cryptography (https://en.wikipedia.org/wiki/Public-key_cryptography).




Bruteforcing isn't really 'forging'. Its just trying out every possible combination until you have found the private key you were looking for.

There are 2^160 (~ 1,460,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000) possible priv-/pub- key pairs which can be generated.
In theory you have to search half of the search space until you find a collision (birthday-paradox). So you have to test 2^159 combination until you have found a collision.
1 TH = 1.000.000.000 Hashes  ; 1000 TH/s = 1.000.000.000.000 H/s. So you would basically need 7.307.508.200.000.000.000.000.000.000.000.000.000.000.000 seconds,
which are about 84.577.641.000.000.000.000.000.000.000.000.000.000 (24h-)Days.

I hope that awnsers your question.

The wallets you mentioned aren't cold wallets at all. A cold wallet is a wallet which is never connected to the internet (in no circumstances).
With Hardware wallets (Trezor, Ledger, Keepkey) you are able to access your coins at any time (Internet connection + doable on infected PC).


Isn't this the sense of a wallet? Each wallet 'should' never expose the private keys generated within itself.
With a hardware wallet its basically not possible to get the priv key out of the device (assuming there are no bugs/exploits available, which can be the case!).

@OP:
Its perfectly fine to use a HW like ledger or trezor to store your coins (even large amount of coins).