There are no bitcoin 'accounts'.
Blockchain.com offers a web wallet, where your private keys are stored on their server (encrypted by your password).

Any wallet is more secure than that.




You don't need to delete any file to check whether your mnemonic code (the seed encoded into 12 words) is correct.
You can simply create a new 'wallet' (more like: wallet file) and enter the same words to check whether it reproduces the same 'wallet' (addresses, etc. ).




If a hardware wallet costs more than you own in BTC, it would be a complete waste.
Rather have some BTC stored on a desktop wallet than no BTC on a hardware wallet.

However, with the nano s an infected computer can not compromise your private keys / transactions.

Hardware wallets (at least the good ones (i.e. ledger nano, trezor ,..), not some shit like the bitfi garbage) do have a secure element built in which does not leak the private keys under any circumstances.
When you create a transaction on your computer (which itself is still 'vulnerable' to attacks), it is being handed to the hardware wallet.

Then you have to check the receipent / amount on your hardware wallet (built-in screen). If it does not match with what you have entered, don't confirm the transaction (in this case your computer created a compromised transaction).
If you see the recipient and amount is correct, you can confirm it with pressing a button on your hardware device. No tampering possible here.




Well, the problem is not cryptocurrency in special.

Malware can be obfuscated and coded to bypass any AV checks. This applies to bitcoin-stealing malware the same way it applies to any other form of malware (except maybe ransomware which encrypts everything on your harddrive, that is very easy to spot).

It is not hard at all to infect a computer if it isn't explicitly maintained to be properly secured (which is not that easy, especially not in windows).


If you have ANY valuable data on your computer which you can not afford to lose, you are at risk.
But would you say that computers aren't the future ? I guess not.

Crypto is just some kind of a 'special case' because sensitive data in cryptocurrency equals money.
While other data would first have to be sold on a dark market or anywhere else, stealing private keys instantly gives you money. Therefore it is a lucrative target.





A web wallet is less secure in every aspect.

If you computer is compromised, an attacker can also gain access to your web wallet once you log in from this computer.
A web wallet has all the same attack vectors a desktop- or mobile wallet has, plus multiple others additionally.


Set a wallet password in electrum, keep sure to have your software up-to-date, including your operating system, don't download cracked or shady software and use your computer and the internet with common sense.
This is more than enough to protect <100$ worth of BTC.

I wouldn't use such an old version either.

Version 2.9.1 is not just 'vulnerable' to the server-side message being shown, but also to a critical RPC vulnerability.
It is definitely not recommended to use such an old version.

If you are using tails on a bootable USB, you might want to add some persistence storage (even though it is against the 'philosophy' of tails having a clean boot each time).
A small file (electrum .AppImage) won't harm your privacy, but you'll have the up-to-date version of electrum on each boot (and if you want to, your wallet file too).


If you tell us more about your setup we might have more and/or better ideas on how to handle your 'problem' (if you describe this as well).

Setting up an electrum server to use an outdated version of electrum because it is shipped with tails, is somewhat inconvenient.

Hardware can always be tampered with.

The only way to verify this is by opening the case and looking whether it contains the components it should (and only these).


However, if you make sure the firmware is genuine (which ledger live does each time, doesn't know how/when trezor's firmware is being checked) you already quite a few attack vectors.

In the end, they are probably both pretty equally tamper proof.

You just noticed that now ?

He is a known troll on this forum, trying to spread misinformation with his sciolism.

The best you can do, is to put him onto you ignore list and enjoy a less retarded forum from this moment on.

You are not much more secured on a mobile.

If you don't change your habits regarding electronic devices, you are prone to lose your coins again.

It doesn't matter which wallet you are using, just make sure to not download fake scam wallets and to not download any shady stuff onto your device.
Make sure to always have your software / OS up-to-date and you are relatively safe.


If you want to be more than just relatively safe, get a hardware wallet or get a dedicated (offline-)device to store your coins.

There are several ways of double spending a transaction.

While a regular user probably won't be able to achieve that, more technical people might still be able to do so.

Especially if a miner is involved, this could create quite a risk.


But it also depends on how much money is being gambled. If you don't have a limit (or a very high limit) i would definitely suggest to NOT accept 0-conf transactions.
However, if the amount is pretty low, it shouldn't be a problem.


Just broadcasting a second transaction with a higher fee, will probably be rejected by most nodes.


But for example, if my nodes connects to your node and to 7 of my 'helper nodes' (which all are connected to multiple other nodes), i could send you the transaction which sends you the funds and simultaneously broadcast the double-spending transaction from my 7 other nodes.

While your node would only see the transaction with you being the recipient (because it rejects conflicting transactions by default), you would never see the conflicting transaction, while the majority of the network would have the double-spending transaction in their mempool.


Another example would be, if i know that a specific mining pool doesn't care about conflicting transaction in the mempool and is profit-orientated, i could try to get a direct connection to his node.
Then i'd simply broadcast the double-spending transaction with an insanely high fee.

If he doesn't care about the conflict in the mempool, he will include the one with the insanely high fee (lets say 1000x higher) once he mines a block.



Noone would probably go trough all of that hassle for 50$.
But if bets with 1 or more BTC are allowed, this definitely is an existing threat.

I can approve that.

I was able to run ledger live in combination with my nano s without problems using a manjaro VM on my arch host.
So, running the nano s inside a VM does indeed work.

Mint itself doesn't seem to be the problem either. It is working as expected on a regular mint install (non-VM).


Your best bet really would be to  upgrade to windows 10.
Is there even a single reason you want to stick to an outdated, unsecure OS ?

And i hope your argument is not that windows 10 is collecting tons of data. While this is true, it is still better than missing quite a lot (important) security features in your OS, isn't it ?

Since the seed entered is a valid seed, the chances are very slim that he accidentally swapped a few words.

I mean, you could definitely create multiple seeds with these 24 words. But swapping just 1 or 2 pair of words most probably won't generate a valid seed at all.
The last 8 bits are a checksum which prevent random swapping of words resulting in a valid seed. While still possible, the chances are very very slim.

May i ask why you decide to use a dedicated pi for each coin ?
Why not simply build a small server farm ?

You'll get way more computing power with 1 high-end "computer" (for ~1800$), than you'd get with 7 pi's (for the same price approximately).

Ich kann dir Delta (https://delta.app/) empfehlen.

Gibts für android oder für den PC. Delta erlaubt es Adressen einzuspeichern, dessen Guthaben dann automatisch in deinem Porftolio viewer aktualisiert wird.
Es besteht auch die Möglichkeit Tauschbörsen damit zu verbinden (was ich aus Sicherheitsaspekten aber unterlassen würde).

Delta unterstützt so gut wie alle Coins und auch die Mehrheit aller Börsen (zum abfragen des aktuellen Kurses).

Schönes UI gibts obendrauf 

Sure 

Maybe you should stop blaming other and admit that you downloaded a fake version 

You can't even properly download the correct version, but have proof that the original electrum is malicious. Sure. 




Then you're doing something wrong 

If you don't know how AV engines work, please stay away from posting this nonsense.
Noone needs your brainless contribution here.


All of these AV's which flagged electrum work with heuristics, NOT runtime analysis. They are false positives.
If you don't understand that, its fine.  But stop spreading your bullshit.


It is easy as hell to create malware which is NOT detected by AV's.
So.. please explain.. why should ThomasV (who is a very good developer) be stupid enough to get a potential malware flagged as malware ?    This doesn't make any sense.
It takes less than 5 minutes to get malware obfuscated enough so that it won't be detected as malware anymore.




I think you misunderstood something.. Noone wants you to upload something.
Just tell us where in the source code the backdoor is.

Source code: https://github.com/spesmilo/electrum

We are waiting.

What exactly does confuse you?

Try to explain what you understood, and we will be better able to identify the missing puzzle.




This applies to (almost) every cryptocurrency:

What do you mean ?

That's how bitcoin works.

BTC is following a UTXO (Unspent Transaction Outputs) model.
"Coins" do not exist. There are just outputs of previous transactions which havn't been spent yet.

You can imagine it like dollar bills. You cant just give someone half of a bill. You give the whole bill, and get change back. That's the same principle.

Because changing a domain helps in any way 

If you are going to lie, at least look for something plausible.


Because your statement results in one of two things:
1) You are a liar.
2) You don't know anything regarding security / protecting stuff. And this would lead to you being absolutely the wrong person for this project.

Doesn't matter which one, if OP does have a brain, you are out.

Nice, you got a really good startup if you were able to set up 4 locations for your company within 3 days:


Site registered: 2019-05-26, 3 days ago.

Good job. With that growth, you are on the way to be a global player soon.


Oh wait.. let me guess.. that's your new website and therefore it only has been registered 3 days ago? 

How ?
If a 1 TB HDD costs ~40$ and has enough space to store the blockchain for the coming ~15 years.. how can you claim that storage is a problem at all 




And they can continue to do so.
The extremely low price for storage nowadays (which is drastically decreasing btw) doesn't prevent them from doing so in the future.

Either they do, or they don't.
But the same applies to the current state too.

Why are people running a full node nowadays if they can run a light client on their phone ?

This has nothing to do with storage.




A lot of people already own 1 TB HDDs.
With the increasing popularity of SSDs and their decreasing price.. what will the 1TB HDD's be used of in 5 years ? They won't be worth anything. Might as well use them to store blockchain data if you don't want to throw it away or store them on one of your big future-SSDs.




The 'demand' does not increase at that pace. By far not.

20 years ago you could barely store the operating system on an optical drive.
Now you get 8TB storage for a fraction(!) of the price. And those 8TB are way more than needed for 'programs' nowadays.


Storage really isn't any issue at all.
People who are running a full node today, won't have a problem running one in 20 years. At least not storage-wise.

It still isn't entirely clear what you are looking for.

A messenger, that's clear now. And you want to have some kind of wallet integrated, ok.

But shall it be a bitcoin wallet ? Altcoins ? Some ETH tokens ? Or multi currency ? What currencies should it support ?
You need to be a bit more precisely if you expect to receive honest (non-newbie-scam) offers.


P.s. Don't expect such a project to be cheap. If you don't want copypasta from github, be prepared to pay several thousand USD (not just 2 or 3) to get it done properly.

The pin is stored in a text file on the mobile. The keys are not encrypted.

With root-access you definitely can access the pin.
Another option would be to try connecting your computer and your android via ADB and then check whether mycelium can be run in debug-mode.

It probably won't allow to be run in debug-mode, but if it does, you can simply extract the pin via the command line.


But the easiest option would probably be to restore it on a new mobile with the backed up seed.


1. Create a new wallet on the new mobile -> Backup seed.
2. Make sure you have a backup of the freshly generated wallet!
3. Copy / note a receiving address.
3. Delete application data of mycelium (in Settings -> Applications -> Mycelium).
4. Open mycelium, restore your old wallet (old backup)
5. Send your funds to the wallet.
6. Delete application data again.
7. Open mycelium and restore your new wallet.
8. Success. You have moved your funds from your old wallet to your new wallet on your new mobile.


If you just want to 'move' your old wallet to your new mobile (without changing addresses / private keys / seeds / etc. ), simply install mycelium on your new mobile and restore a wallet by using your old mnemonic code backup.