The seed words are exactly the same among versions. I have all the transactions from before the upgrade in my history tab.
I did not use an exchange to send the original transaction.
There's no mention of the address to which the funds were refunded to other than in the details of the original transaction.
If the address doesn't belong to your wallet how could you have sent from it? |
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you don't have to recreate your wallet when upgrading electrum. it automatically upgrades your wallet if required. you don't lose addresses or funds.
maybe you sent the money from some website's shared wallet? like an exchange's? in that case that originating address doesn't belong to you. perhaps the exchange will credit your account if you contact them about it but I wouldn't hold my breath.
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Thanks, I just ran both commands in the terminal without uninstalling the previous version.
All is fine.
you should uninstall the old version using apt-get otherwise apt might cause problems the next time you update your system. |
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I'm running Debian 9, and I installed Electrum 2.7.9 using the SPM.
However, the Electrum website has version 2.8.3 as the latest, should I upgrade to the newest version or
stay with the current?
yep uninstall using apt-get and then follow the instructions on the download page to install the latest using pip2: electrum.org/#download. next time when a new version comes out you repeat the install using pip2 and it'll update you. |
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Do you have any source of step by step how to merging bitcoin addresses into one address i got read some post the 1 input can decrease the transaction fee and would like to test and hope you can give some blog post or you can share step by step merging bitcoin addresses.
You don't "merge" bitcoin addresses. That is impossible. What you do is consolidate all your "Unspent Transaction Outputs" (or UTXOs) into a single UTXO... which is a complicated way of saying "Send all your coins to an address that you own in one transaction". A step by step for Electrum would go something like this: Step 1. Click on "Receive" Tab Step 2. Copy the "Receiving Address (TIP: you can click the icon at the end of the box to copy it to the clipboard)  Step 3. Click on the "Coins" Tab (TIP: if you can't see a coins tab, click "Wallet -> Coins") Why do it like this? Why not just copy the receiving address you grabbed in step 2 to the send tab and just doing a normal send transaction? There is no reason to worry about individual utxos. |
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Is there no other way around this? Wouldn't you lose all your old transaction data?
You can export the labels beforehand using the option in the wallet menu. It's under wallet > labels > export in the latest electrum. You would export the labels using 2.4 before upgrading to 2.8.3, restoring from seed and the importing the labels. Alternatively you can use the label sync plugin in 2.4 to upload your encrypted labels to a remote server. Under 2.8.3 you enable it via tools menu > plugins but I'm not sure exactly how it works. Maybe you can figure it out and let us know here? |
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You shouldn't have used the portable version. Always use the installer version for your operating system. When you want to update to a newer version you simply download the installer and run it again. It will update electrum for you.
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Thanks for the replies. I have tried the ismine command on the console but it just keeps saying "false", and ticking the BIP39 box, made no difference.
I go file/ new/restore, i name wallet, then choose standard, click already have seed, enter seed, leave bip account as 0, enter new password, then end up with another empty wallet. Why do I keep having to entering a new password? It doesn't even give me the opportunity to use the password that I already have..
I know it's all spelt right as I copied, pasted, and printed it out.
You don't have to enter a password. You can leave it blank. But it will mean that anyone or any program with access to your PC will be able to spend your bitcoins. |
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The addresses in red aren't really a problem. They are only a UI annoyance that should clear up soon enough as you start receiving more payments. You won't lose money or anything like that. I'm guessing that some transactions to older addresses were dropped from mempools and didn't confirm so addresses generated past the gap limit are showing as red. You can confirm that your gap limit is indeed 20 by running this command on the console tab: wallet.storage.get("gap_limit", 20)
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The addresses in red indicate that they are beyond the so-called "Gap Limit" of your wallet.
Is your Electrum wallet an HD "seeded" wallet... or was it an old style keystore that just generates random private/public keypairs? Electrum has always been deterministic. IT has never generated unrelated key pairs. You could only create such a wallet by importing private keys and then there would be no question of new keys being generated. |
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That is a "one off" charge.
It's not a one off charge. He'll be charged again after 99 transactions like you said. One off means charged once and then never again. ecsqatar you can create a standard wallet and move your coins to that. The only fees you pay when you use a standard wallet are the bitcoin network fees also known as simply transaction fees. You don't pay fees to third parties like trusted coin. However note that the company that develops electrum derives a lot of its revenue from its partnership with trusted coin. In return they make available a free wallet for all of us to use. Regarding the proportional size of the fees you should know that bitcoin is not suitable for micro-transactions. Bitcoin fees are relative to the size of the transaction in bytes not the amount transferred. So the more money you send the lower the fees proportionally. Also in this case you've made a bulk purchase of trusted coin's services so that's why you paid so much. Now re: your paypal deal edit: nvm. I didn't read again  HCP is right this looks bad. |
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I am guessing he might of installed some shitcoin wallet on this computer which put some pre-created wallets into his ~APPDATA~/Roaming directories and the hacker just needs to wait for a transaction.
So far 2 people were tricked. The first guy was tricked 4 months ago.
Check your ~APPDATA~/Roaming and see if you got other wallets in there that shouldn't be there.
Reason for the double spends is because maybe someone else installed the virus who was a professional, and knew that other people might send funds to those addresses and since he knew the private key, he started listening in on those addresses also.
The malware theory doesn't make sense because the address' private key wasn't secret. Just google the address and you'll see that the private key for this address is public knowledge. What would be the point of infecting a computer with malware just to send the money to an open vault so to speak? |
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I am using Electrum with 2 computers as a cold storage.
On the offline computer I don't see any addresses other than the default 20, on the online computer a new BTC address appears as soon as one is used up, how would I be able to create a transaction with an address not in my cold storage address list since its never connected online?
The unsigned transaction that you generate on the online computer will contain instructions for the offline wallet to generate the necessary addresses before attempting to sign the unsigned transaction. So you don't have to worry about this. All addresses are generated from the seed so it is not a problem. Don't increase the gap limit or follow any other inane advice people give you. Just carry on as usual. |
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Guys I downloaded from the official website the installer: https://electrum.org/#downloadI did this today.. it's not like I forgot, I still have the exe in my download history on firefox. This is what's weird.. it's like something placed the Wallet.dat into my roaming folder so when I started electrum it never asked me to create the wallet, I just foolishly thought I had installed electrum at an earlier date. Like I said I had seen 4 transactions and just assumed it was from me doing stuff awhile back. Either that or some one had stolen my wallet.dat awhile back. Seems like I just sent away $27,000 to some random person thinking it was my own safe key.. what a nightmare. This is sort of what happened but why would a malware author create a wallet file containing an address with a publicly known private key? If he does that he can't guarantee that he will get the money. Anyone could steal from such an address. Are you sure you didn't create this wallet file yourself in the past when browsing directory.io? Perhaps you were having a bit of fun trying out some of those private keys listed there. What happens when you go to wallet menu > seed on this wallet. I'm guessing the seed option is grayed out because this wallet only contains imported private keys from directory.io's last page. Since version 2.0 electrum has only generated compressed private keys. This address uses an uncompressed private key which is long obsolete. |
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Actually, i'm not even sure that electrum will even use change addresses on a non-HD wallet.
It'll send change back to one of the input addresses. |
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Why don't you guys just create a new single key wallet? You can have more than one wallet in electrum you know? A "Standard wallet" in electrum will be a single key wallet. It'll be much easier to sign messages with a single key wallet. You can follow this guide here to create your wallet. Use file menu > open to switch wallets in future. |
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128 bit is considered secure. 256 bit only adds computational overhead. That's why we just use 128 bit seeds.
You are free to use 256bit seeds for your wallet.
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In addition to what HCP said you can also generate a custom seed of 24 words using the command line option make_seed: abdussamad@linux:~/temp/electrum/multisig_testnet> electrum make_seed --nbits 256
rack spoon almost tissue wool area odor number matter home zero market cup baby gate idle spin okay net robust crane corn enrich address
`electrum help make_seed` will have more information |
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I want to set up my wallet so nothing can leave without my google authentication. I already set my wallet up and has coin in it. I know you can do it during set up but I must have missed it. Where can i do it while the wallet is already in existence?
My second question. Is it preferable, every time i receive Bitcoin to send it to a different available address? or is that not best practice?
Still new to the game so want to secure as much as possible.
Thanks!
You need to create a new wallet if you want to use two-factor authentication with Electrum: http://docs.electrum.org/en/latest/2fa.htmlYou don't necessarily have to send Bitcoin to a different address in your wallet, Electrum does that by default but you incur larger fees and should probably disable it. Tools -> Preferences -> Uncheck use change addresses. You don't incur larger fees if you use change addresses. Inputs always have to signed individually. |
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