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They could be the phone number that you can call to learn more about Windows' CSPRNG
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It says in the quote that only the last 64 bytes are used to seed the CSPRNG so what is there to worry about? The first 12 bytes that remain constant aren't used to seed the CSPRNG. Maybe they serve some other purpose.
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They only allow so many submissions every hour. Try again at the beginning of the hour in order to get your transaction included.
It is difficult to say how long it will take without any speed ups. Could be anywhere from a day to several days.
Just worked before you replied. Let's see, if that actually helps.  Do this: https://bitcointalk.org/index.php?topic=1899099.msg18859267#msg18859267 |
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You should upgrade to the latest version of electrum because there have been many bug fixes related to transaction fees. Also in the newer versions you can bump the fee for a transaction after it has already been sent |
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Hey guys,
I am currently experiencing a strange error: I tried to restore a seed I created with electrum about 8, max. 10 months ago.
It consists of 12 (I counted it 7 times now, lol!) ...
But I CANNOT click the "next" button to restore the seeds (it stays greyed out).
The next button stays greyed out because the seed isn't valid. It doesn't pass the checksum. I think you are missing one word in your seed. You see for versions 2.0 - 2.6.4 created 13 word seeds. 2.7.0 was released in Oct 2016 and it standardized seeds to 12 words. So what version did you use to create this wallet of yours? This is the most important question. The good news is that since you have all but one word in your seed you should be able to run a bruteforce program to get the remaining word. |
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It might be an interesting service to provide a pre-pruned data directory for those that want to use Bitcoin Core but don't want to use up the necessary bandwidth to synchronize from the beginning.
Doing so would probably open up significant attack vectors since the user would need to trust that they were getting a valid blockchain, UTXO, and config file, but if a reliable trustworthy source could be found it would significantly speed up the process and reduce the bandwidth of starting up Bitcoin Core as a wallet.
Maybe you can offer such a download? You should sign it with your PGP key and upload it somewhere. But IMO it would just be easier for people to use an SPV wallet. |
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Is that correct, that 2FA wallet is similar to 3-party-signature wallet, so watch-only wallet can be created via importing three master public keys when creating/restoring new wallet to create watch only wallet for two-factor auth wallet?
Yes. You can find the 3 mpk via wallet menu > master public keys. When creating the watch-only wallet make sure you select 3 co-singers and 2 signatures required. |
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you didn't install electrum like you were supposed to so dependencies haven't been installed. you have to install it using pip2. the instructions are on the download page of the electrum site.
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It's a 2 of 3 so where are the keys? One is the password from the wallet the second is the 2FA code. Is that checked by trustedcoins so they give the key then? Where is the third key? I remember having read that trustedcoins can help in these cases but I'm not sure anymore who holds keys where.
When you create a 2fa wallet you get two "keys" in the form of the seed mnemonic but only one of those two is saved in the wallet file. During normal day to day operation of the wallet you need trusted coin's cooperation to sign transactions. But if you wrote down the seed you can restore the wallet and then you won't need trusted coin's permission to spend your coins. At that point it ceases to be a 2FA wallet though. |
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----- NEED HELP PLEASE ------
my phone was stolen last week with the google authenticator on it, now when i try to send coins out of my electrum wallet it asks for the 2fa which i dont have, can someone help me on how i can take my coins out please ! is there a way or am i just shit out of luck, i dont have any of the pass phrases or whatever saved. all i have is my account and password =(
You won't be able to restore your wallet (and taking off the 2FA steps) unless you have the seed which you don't, I'm sorry but your funds are lost. Since it is a 2 of 3 shouldn't it be possible through trustedcoins? They should hold the third key. So password of wallet and their key should help if I understand it correctly. Not sure how it works. They won't reveal their key just because you ask them for it. It would defeat the purpose of authenticating via 2fa if they just give up their key to anyone who asks for it. And tanlucle, no, 2FA is a nice thing. You only didn't take care when you were told to backup the creation code, seed code, backup code or whatever it was named in that case. Your could have easily restored your 2fa entry with it.
Yep he should have written down the seed. |
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Hi,
I was in the process of investigating why my transactions keep getting stuck.
I had been told by a few people that it was my fault because the fee was too low. But I never had to set the fee manually before now... so I guess as a wallet user I should be constantly checking for upgrades. Is that correct? Should I be looking to upgrade Electrum as a matter of course?
Anyway, so I thought I'd check my preferences but then clicking on the preferences menu option doesn't respond at all. So even if I had wanted to manually set the fee.... no go.
Then I thought well, perhaps it's time to upgrade to a new version. I had a look and sure enough there is a new version that is out. So I'm happy to do so, unless there is some reason not to... I'm making assumptions here because the latest docs are not overly verbose about when an upgrade is necessary/advisable as opposed to when it is entirely optional.
Then I recalled that I have both kinds of wallets: a seed wallet and a seedless wallet (seedless, from when I imported a different client's private keys into electrum).
Before upgrading, the docs say make sure you write your seed down. Seems these are instructions for seed wallets only. Are there any instructions on backing up my seedless wallet? Should I export private keys? Should I make a copy of a certain folder? Should I treat these two wallets differently during the back-up/upgrade?
Just want to make absolutely sure I get this right, so any help will be much appreciated.
edited: please do read again. You definitely should upgrade since 2.6.4 is quite old now and there have been improvements in the fee setting department. After you upgrade make sure you enable dynamic fees in preferences (hopefully preferences will show up once you upgrade) A seedless wallet doesn't contain a seed or any private keys either (private keys are actually derived from the seed). What you have is NOT a seedless wallet because it contains imported private keys. You can make a backup of this wallet using the option file menu > save copy. For your seeded wallet make sure you write down the seed if you haven't done so already. You can also backup the wallet file using the file menu > save copy option if you like. Electrum will pick up both your wallets and upgrade them to the new wallet file format. We recommend writing the seed down for your seeded wallets only as a precaution. Just download the latest electrum version installer and run it. |
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Hi there, I want to post a Bitcoinadress to recieve donations while useing Electrum as a wallet. I already found out, that sending BTCs to an "old" adress ist possible but not recommendet because of the possibility of tracking your past payment. Which of the adresses used in Electrum should I use? The ones on the Top? Do I have to do anything else to "save" that adress? Thank you for your help and sorry for the noob-Question. Very best Chris  Go to the receive tab. You should get an address there. Give that to whomever you want to receive bitcoins from. They can keep using it multiple times. |
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testnet electrum isn't a fair reflection of main net electrum. i've faced errors there too. My suggestion is to create the transaction in electrum but broadcast it using various online tools that were made for this purpose. To get the signed transaction from electrum follow these steps: - compose the transaction as normal on the send tab but don't click on the 'send' button. - click on the 'preview' button instead - then click on the 'sign' button in the window that pops-up - finally click on copy to copy the signed transaction to the clipboard. Now you should be able to broadcast it via sites like this: https://testnet.blockexplorer.com/tx/send#! |
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Electrum has been a deterministic wallet from the very start. It adopted the bip32 standard starting with version 2.0 I believe. So yeah it is HD.
It is opensource
You can run it on testnet with the --testnet command line switch
It supports multisig too.
HI, thanks for Response. I am more interested in running electrum on test-net, but unable to find any clear doc on that. Can you explain, How to use test-net in detail? I have openned a new discussion on this https://bitcointalk.org/index.php?topic=1888177.msg18756326#msg18756326. I have explained above how you can use electrum with testnet. You run it with the --testnet command line switch: Run `electrum help` to see more options. If you are using windows then command line switches are typed in a terminal window. In future try and read the answers you are given. Otherwise there is no point in you asking questions and us answering them. |
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Electrum has been a deterministic wallet from the very start. It adopted the bip32 standard starting with version 2.0 I believe. So yeah it is HD.
It is opensource
You can run it on testnet with the --testnet command line switch
It supports multisig too.
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I didn't follow the whole thread but it is obvious to me that this is not something you have to worry about with electrum because it does use deterministic signatures. So it follows that RFC you talked about in the OP.
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i tried to run setup.py but got that error above and since i was offline i have not yet tried anything else. as i said being a cold storage and all.
I find it odd that it's working without you install the necessary python modules. i am still in learning and experimenting phase, so i think i will install a full linux on my Virtual Machine to have access to internet and also be able to read stuff in case i got stuck in linux and didn't know what to do (like getting out of the GUI with ctrl+alt+f1 and not being able to google it and come up with ctrl+alt+f7 lol)
and then try more things.
You can run a terminal app in your gui itself. Look in the menus for a shortcut related to that. |
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my other main question is that "why do i need to do all this since the way i did it (simple "python electrum" from the extracted tarball) is working and i have a working wallet that i can sign transactions with offline?
you know, i want to understand what the difference is, and what is really happening then do it. sorry if it is a strange question but i am not only looking for a solution.
Well if it's working for you then there is no need to try anything else. Did you run setup.py? Did it download the aes and other required python modules? Going through pip2 actually installs shortcuts and it puts the electrum binary in /usr/bin. It basically does a system wide installation so that's why we recommend it. |
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