Thank you so much so far, I hope we will be back with more questions soon, if there is any future in this project!

I wrote another thread about this subject but someone recommended me I could ask about it to you guys here on this part of the forum. First of all, my original message was this:






What he recalls:
There was an app or a webpage where you typed in some information, probably a username and/or a password.
Then there was a load of text like a CMD, probably in text or maybe the background was white.


Anyone knows anything about what site this could have been?

Thank you very much, will check that out!



Good idea! Will do that, thank you!




Oh, I didn't know that. I can promise you that this is not a scam.




Thank you very much, will check that out!



Solo mining, ah. I will ask him about that too!



Ok, thank you guys so far! I will make a new subject in the mining category and hopefully come back with more questions if this situation develops!

I am trying to help a guy with a project. He mined bitcoins back in 2010, 2011 or maybe 2012. Not for a long time, so its not like there should be worth that much but still, you never know, and we want to at least give it a try and see if we could find this potential money.

So we are trying to figure out where it was mined, first of all. So I was hoping maybe the more experienced members on this forum would could give us any idea about what websites or apps that were available at the time. Maybe he could then recognize it. So we are looking for any information, whatever it is, that could help us and give us a clue where to start.

I guess it is very hard, but it would be great to at least know something more so we know if it is possible or not.

Thank you for the answers!

It seemed that the name of the electrum itself and the asc-file was not the same since I had downloaded a couple of dubplates and since them the name was slightly change. But when I renamed them to the name "electrum-4.0.9.dmg" and "electrum-4.0.9.dmg.asc" and right-click on the dmd itself and "services" > "OpenPGP: Verify Signature of File" it says the following:

Thomas Voegtlin <thomasv@electrum.org>
6694 D8DE 8BE8 EE56 31BE D950 2BD5 824B 7F94 70E6

The signature of this message is valid but utrusted. That means it has not been tampered with. It is untrusted though, because the key has not yet been verified.


So, is this enough? Should I do something more before I can fully trust this is a legit version?

I am on mac and I am trying to verifying Electrum, but without any success unfortunately.

I have downloaded and installed the gpg suite. I have added Thomas Voegtlin to the "collection" and I have also been downloaded the .dmg (program itself) and the .asc-file (the code from the site).

First I opened the .asc-file and a messages comes up withing the gpg-program stating that "the signature does not match this message. You should not trust this message, because it was manipulated..."

When I then right click on the .dmd-file and choose "services" > "OpenPGP: Verify Signature of File" it just says "no signatures found".

What am I doing wrong here? 

I got my amount of bitcoin on a usb-stick at the moment. I am using Electrum. Now I am about to transfer the amount to my coldcard (have been making a skelleton file of the wallet and know the adress I should send to). But since I am a little bit paranoid I wants everything to be as safe as it can be so I am thinking of every detail of this and just want to hear if you got any inputs on this. This is what I have been doing so far:

- Got my ColdCard
- There were no holes or anything strange with the package, the bar line on the front said VOID OPEN after I opened it. The code showing up in coldcard was the same as the package.
- Choosed a pin
- Got the two special words
- I know the seed words
- Been making a skelleton file
- Imported it on the electrum on the computer
- Transfered a small amount from another wallet to it
- Recived the money
- I have been sending an even smaller amount of it by the coldcard signing it, worked good!
- I have wiped the seed words on the coldcard and putted it in again, the same wallet is showing after, when I made a new skelleton-wallet

This is where I am now. What are the biggest risks? How can I be 100% this is the real coldcard or that someone on the factory is a thief or something like that? What are the odds of connect to a bad nod over Electrum and can someone steal the money that way?

Would you recomend to send the whole amount directly or piece by piece?

Thanks!
So I just need to check that option and then input my 24 words? Of course no plan to try it because that would kind of lose the meaning with this coldcard thing but good to know!

You mean that it is not considerd dangerous to use the node electrum is giving you? I thought it might lead to that other people could see my IP adress and attack me or something, but on the other hands, as long as they don´t know my seeds that is not much hurt they can do to you?
And they can not kidnapp the transactions or anything like that?

I am getting a little bit nervous because I don´t have my own node. It is expensive and seems to difficult for me but I am thinking about if it is a good idea to import the wallet skelleton-file (even if it is just that, no seeds or anything). May this hurt me or putting me in danger? What is the worst case scenario here?

Thank you! But what if I need to import it inside Electrum and they only uses 12 words when I have 24 words, how is it possible to import it then?

Thanks for the answer!

Lets say that my Coldcard gets broken or lost or something and I need to import the seed somewhere else, would that still be possible if I use this passphrase-thing?
Am I more dependent on the ColdCard if I use this one?

By the way, do you know if you can have multible wallets on one coldcard?

Hi!

I recently got a ColdCard and I have created a new wallet with a seed based on rolling dice.
I am now thinking how I should continue. First of all, should I use Electrum, Wasabi or something else? What would you recommend? I am not planning to use it everyday or even once a month, more like hodl or maybe in a year or so. No plans on getting my own node or anything like that.

Then I am wondering, I have created a 24 word seed with dices and also my own keycode (4+4) so the wallet is created inside the coldcard. But I am now wondering, what is the function "Passphrase" for? The second option on the main screen.
It says something about making a new wallet. Is that necesarry? And what would be the words be used if I would like to importing in inside a complitly new wallet anytime in the future and I need seed words, should I use the 24 words I already have or the new words (I think it said it was 12 words on the new one on the passphrase menu).

Anything else you guys recommend?
And I have another question aswell, how could the coldcard create a new wallet without even having connection to the internet and the blockchain? Wouldn´t that be impossible? Or is it that it is not having been created yet, it is just there, ready to be used?

Ranochigo, thank you for the answers. Another couple of follow up-questions from me.

"No. Electrum is open source and there is bound to have a script to convert the seeds into the BIP32 key easily to extract the private keys. It won't be difficult at all."
Ok, so nothing to worry about then, using electrum?

"Depends. Remember, with the wallet files they can have unlimited attempts till you move your funds. In the future, when you access your wallet, they can also have a window of opportunity to steal your coins. If your password is predictable or reused, it won't be safe. There is also no guarantees that your computer isn't infected with malware already, with antivirus or not."
Its a unice password, never use it for anything else and I think its very hard to break. I see what you are saying, no one should ever be 100% sure that they are free from virus and malware. But the risk should be closer to 0.00000001 % than 90% I hope?

"No. Relying on your memory can be a bit risky though. If you somehow end up with amnesia or just forgetting it, it would be pretty terrible. It's better to keep it on paper somewhere."
But if I would remember it (or write it down in a safe or somewhere other safe place) it would as good as having a cold storage-thing?

"They are hardware wallets. They are designed to secure the funds with the most convenience. You can explore air gapped wallets with LiveUSB or an old computer as well. That'll be far more secure than what you have right now and fairly easy to do with the guides around the forum and on Electrum website."
But even then the saftest thing would be to write the seed down? You should never rely on a device on its own? Have heard a lot of good things about Cold Card MK3, what do you people here think about it, is it a good option?

Bought an amount of bitcoin just around christmas, not that much but hope at least I can have a chance of being on the futures carosuel. Now I am thinking about how I should store this in a safe way.

I use Electrum and since I am planning to just hold this there is no need to login to the encrypted wallet-file. I have created a watch-only-wallet so I can just have a look that everything is ok. I have also copied a backup on the wallet to an externel thing that I never use. I also remember the seed words, will remember them for the rest of my life I guess.

I have some questions and would be greatful to have some answers!

1. Lets say that Electrum wouldnt be used anymore in the future, would I still be able to use my wallet or are they in someone elses hands in one way or another?

2. IF an hacker would got inside my computer, and I never open and typing the passwords of the wallet, it would be very hard for them to got inside the wallet, right?

3. Would it be a better idea to delete the wallet file and just remember the seed words? Is that the most safe way to do it (if you remember of course!)? Lets say I deleted the file and the backup so nothing is physically there where are it then? Is it still a part of Electrum in some way? Should I be worring about futures updates of any changes in the system making it impossible to reach it with just the seeds?

4. Thinking about getting a cold storage setup. Was thinking about Trezor and Ledger but heard som bad news about them and was thinking about Cold Card instead. Am I correct if I say that the reason to have a cold card is to get the wallet file even safer, you still have seed words that can be use to getback the money, right?
Do I need that or is this safe enough for now? I was thinking that if I would buy that I would be paranoid that the company have a list of consumers saved or something like that so the risk to being attack instead would be bigger in the future. Maybe its better and more safe to just make it simple instead?

Ok, thank you for clearing that up!

Thank you for your answers, both of you!



Oh, so someone can locate it when the transfer gets public?
But sending it all at once would get it impossible to someone else to steal it? They won't have the time to do that, right?

Ok, so the wallet adress and its private keys will stay the same, I can rely on the privatekey written down? I could even import it from a new computer if the old one got crashed and the wallet-files got destroyed?
Do you know where this roomers comes from? I mean that it is dangerous to just send a bit of the total amount when you import?

I have imported the whole thing with the private key.

I just want to take the chance to ask you bitcoin experts around here the a couple of question about this situation and if you know any risks that I should avoid.

The thing is this:

I have imported my old wallet on electrum. The balance is like it should, so it seems to be alright!
Now the plan is to transfer them to a market, or maybe store it on a hardware wallet. Eitherwise I will need to send them from the wallet. Are there any big risks you can come to think about?

I’ve heard that you should never transfer any amount lesser than the whole amount when you have imported a wallet, otherwise you might end with having the rest of the money ”disappearing”, is that correct? Never heard of it in reality but have read in a couple of discussions.

Anything else to keep in mind?

By the way, what would you say is the most secure when it comes to importing a wallet:

Bitcoin Core
Electrum
Another option (mobile wallet or something else)

Is that possible to do in electrum?


Do you know how you got the malware? What is the name of it? Is it very effective - a.k.a know what it is looking for and send the information right away and is it looking for every kind of bitcoin-related things?


Would be very appreciated!

I am wondering, what are the biggest risk on the way from importing/sweeping bitcoins from a wallet to another (lets say bitcoin core or electrum to bitstamp/Binance), is it pre-installated malware, someone tracing the transfer (is that even possible?) or something else?