*0.025 BTC

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OP, can you check the 'Address'-tab (relatively at the top of electrum) and check wether the address appears in there.
You might also try to use the console-tab (if not visible: 'View' -> 'Show Console') and type in: listunspent().

This should show 'all' of your UTXO's (in your case: you should see address 1QYBTf2tDgyzc6GA8w4ycef7HjWoPgk6j with your balance).
What is the output of the command?

You can also try to type ismine("1QYBTf2tDgyzc6GA8w4ycef7HjWoPgk6j"). This should return true.

Another question is wether this is somehow important?
As far as i know tails is designed to stay offline. If this is correct and people use tails how it is supposed to be used, i can't seem to find an attack vector which makes use of the found vulnerability.

This, of course, is no excuse for using an old (unpatched) version. But this still does not expose one to a higher risk.

If you can think of any attack vector which might exploit this vulnerability (in any way), i'd be happy being enlighten.

Private keys are used to sign transactions.
Public keys are used to verify the signature.




MD5 and SHA are hash functions.
Hash functions are 'one-way functions'. This means it is relatively easy to calculate a hash, but *impossible* to calculate the input out from the hash.

Encryption on the other hand has to work in both directions (encrypting and decrypting).

What problem exactly drives you crazy?

Did you 'open' the port? Note: When configuring the firewall on your router you need to configure port forwarding.
'Opening' ports mostly allows incoming connections to your router. This is not the same as forwarding (Forwarding = destination ports from packet header are being forwarded to the destination machine).

I think the majority of router does not distinguish between opening and forwarding. But there still quite a few which do.

The first step would be to check your address in a blockexplorer [1] and check if the transaction has been confirmed already ('X confirmations' or 'unconfirmed').
If it has been confirmed, your coins have arrived.

It mostly is a network/sync issue. Do you see the dot at the lower right corner? Is it red (disconnected) or green (connected)?

What version of electrum are you using? The current one is 3.1.2, you should update electrum if you don't have the current version.


[1] e.g. blocktrail, blockcypher or blockchain.info

What HCP meaned (i think) is where did you get the address from? Did you click on 'receive' in your ledger application?
Did you also confirm the address on your nano s?

It is kind of strange that the balance is changing each time you reset the application data.
It seems like the ledger server are working to capacity at the moment. Quite a few people have network/syncing issues currently.


Edit: Obviously i was too slow At least i was correctly interpreting HCP's question  

I have also reported this application. Thats a very strange behaviour of the chrome web store.
I seem to not be able to find ANY application from ledger through the search function.

The faked ledger manager application has 120+ downloads (which is pretty small compared to 600k+). I am not aware of anyone claiming his funds got stolen from a nano s.
So it might be a 'failed' malicious version. But still, this has to be removed as soon as possible.

Note:
There is no official bitcoin wallet. Bitcoin is not owned by a company/authority/anyone.
Bitcoin is an open source project. Anyone can create wallets.

Bitcoin Core is a development team which focuses on improving the bitcoin protocol. They are not deciding it themselves.
It takes the majority of the community to make changes to the network.

Core has released (and is improving) their full node wallet, which is considered the best full node wallet at this moment (this can change in the future).


While it is definetely safe (regarding security + privacy) to use the core wallet, it is important to keep in mind that it is not an 'official bitcoin wallet'.

I don't think a switch to PoS would decrease the centralization.

This would only 'move' the centralization from people (with lots of money) who buy miner and electricity to people (with also tons of money) who stake their coins.
It might have a small influence on who is mining 'more' blocks. But overall this is not a 'solution' to the 'centralization problem'.

BitGo and BitPay seem to be the most reputable in this sector.

But if you are accepting bitcoin via a 3rd party you are still relying on their service.

The most secured (and trustless) alternative would be to create multisig addresses yourself and use a full node (hosted on either a dedicated server or VPS)
for receiving/checking transactions.

While i understand it is the most convenient way to accept crypto payments via a 3rd party service, it basically destroys the whole purpose of crypto currencies:
To be your own bank and to not having to trust anyone when using/accepting payments.

The crashes might be due to your wallet.dat being an old version (wallet also from 2016?).
You might try to start core with the -upgradewallet command.
But make sure to make a backup of your wallet.dat before messing around with it!

I doubt it will work on another PC. But instead of downloading/syncing the whole blockchain from scratch again, you might also try to just move the blockfiles
to your new PC. This will reduce the time it takes, since core then only needs to verify those blocks, instead of downloading them all over again.




I am not aware of such a repository. But moving the files manually to your second PC is the better/faster way.

Restoring lost data from flash memory cells (which are used in your mobile phone) is quite a tough task, but NOT impossible.

The first thing you should do is to make a forensic correct backup of your phone (better: two). You should only try to recover files from an image, never on the original device.
Connect your mobile (USB-debugging mode) to your PC and make a 1-to-1 copy (e.g. with linux DD).

Afterwards you can start a forensic recovery software to retreive your data (or at least try to).

But years after deleting a wallet and using the phone.. the chances of recovering any useful data are almost zero.

There are quite a few softwares available to recover deleted data.
This Master thesis deals with forensic tools for android phones. It might be helpful, but i still don't see a big chance in suceeding.

After copying the old wallet.dat into your data directory (See HCP's post; above this one), make sure to run core with the -reindex command.
The easiest way would be to run core from the command line:

In Windows:

• Press WIN-key + R
• Into the Run-command type: cmd
• Navigate to your core folder (where your .exe is; not the datadir) with cd "PATH_TO_CORE"
• Run core witht he startup flag: bitcoind.exe -reindex (replace 'bitcoind.exe' with the name of your executable if different)

I agree with your statement that it is definetely a bad idea to include infrequently used software into an OS image.

But i think it is definetely less probable for an attacker to distribute linux images with malicious wallets.
1) I think people who do know how to install/use a linux distribution won't just download any unknown distribution just because it has a wallet included.
2) If an attacker would upload a malicious distribution, he probably won't just install a scam wallet, but will open a backdoor for full control.

You are right, whenever i hear/read about RAID i am automatically thinking about RAID 3/5/7.
The fact that RAID (Redundant Array of Independent Disks) 0 does not store data redundantly seems a bit odd to me. 

For the future:
If the transaction shows as confirmed on several block explorers, then it most probable went through without a problem.
And if you confirm the address on your nano s, you can be sure the private-/public- keypair has been generated by your device.

Syncing-/Network issues (with ledger server) can happen from time to time. Nothing to worry about.

I don't think it would be spotted that easily.
While its true that a simple error would be found fast, a (almost identical) word would not always attract attention that fast.
In fact, if both words are part of the wordlist, it depends on the checksum (a part of the last word) wether it can be spotted or not.




Upgrading won't help when OP already can access his trezor and can't access his coins/addresses in ANY wallet with his seed.

When did you solo mine? Are you sure you were mining bitcoins?
Solo mining is kind of impossible for a few years now.




Using electrum on an offline machine won't help since electrum relies on an internet connection to get the status of transactions/addresses of the wallet.
Without an internet connection you won't be able to look up wether funds are available.

Bitcoins can't be transferred via IRC.
Did he send you private keys via IRC?

Without giving someone your address and without receiving a wallet file it is pretty unusual how you could have received BTC's.

Did you install and sync bitcoin core when he gave/send you BTC ?




This is not possible.
No software can achieve the functionality of a hardware wallet.
What exactly did the software do? Encrypting a file?

Sorting in alphabetical order does increase the speed of the nano s 'booting'.
It does not increase the amount of apps you can store on the device.

The actual amount is dependend on the types of coin wallets you install onto your nano s.

Each fork of BTC, for example, does now use the same code inside the nano s. This means 'similar' applications do need less space than completely different coins.




I think there is not much more room to grow since the memory itself is limited (with a good reason: to avoid injection of malicious code).