1. This is a recipe for getting robbed. Humans are not a good source of randomness so whatever phrase you come up with will not be secure. See here.

2. bip39 doesn't result in segwit wallets. maybe you mean selecting the p2sh segwit derivation path? the warning for bip39 compatibility will apply to you too regardless.

3. when you check bip39 it lets you type anything in the seed box. as mentioned in 1 your seed has poor entropy because you are generating it yourself. hashing it with sha256sum or sha512sum doesn't make any difference.

electrum seed is not bip39 so you can't use the coleman site to generate address specific private keys.

@OP You will have to create a new wallet file and send your coins there from armory. When creating the wallet make sure to write down your seed words on paper. As for backups here's a detailed article about that.

You can subscribe to the github tags feed: https://github.com/spesmilo/electrum/tags.atom . I also recommend bookmarking the release notes so you know what's changed: https://github.com/spesmilo/electrum/blob/master/RELEASE-NOTES

You should upgrade to the latest version of electrum. There were issues with segwit outputs in earlier versions. Upgrading will also give your transaction time to confirm

11 word seeds are possible. It's only in recent versions that they strictly forced it to 12 words:

https://github.com/spesmilo/electrum/pull/3611

Since 3.1.0 I believe. You should still be able to restore from seed in the latest version and you can in fact create your own shorter seeds using the make_seed command:

If the recipient is using electrum ask them to upgrade to the latest version of electrum. Old versions have difficulty synching with the network.

If they are not using electrum then it's not relevant to this forum. That money has been sent so it's not really your problem either.

shift + click reload does a hard reload on firefox. this forces the browser to fetch a fresh copy from the server.

What version of electrum are you using? You should update to the latest version. If that doesn't fix the problem switch servers. "not verified" means electrum is uncertain of the status of the transaction possibly because the version you have is too old or the server its connected to is problematic. More about transaction status messages here.

Shifting the words around is pointless because bip39 mnemonics have a checksum in them so it's a simple matter of rearranging the words until you arrive at a permutation that passes the checksum test.

Those who are looking for a second factor to their seed backup should use the passphrase feature of bip39 or electrum. The wiki explains it https://en.bitcoin.it/wiki/Mnemonic_phrase#Two-Factor_Mnemonic_Phrases . Note this is not encrypting the seed. Instead it's adding salt to the hashing function which is used to convert the seed to the master private key: https://github.com/trezor/python-mnemonic/blob/master/mnemonic/mnemonic.py#L185

do you own these cards or did you get friends to store them for you?

all you had to do was update electrum. creating a second wallet was totally unneccessary. next time post in the appropriate forum: https://bitcointalk.org/index.php?board=98.0

We can't see the whole picture looking at addresses on block explorers. Did you look for frozen addresses  on the addresses tab? Wallet menu > addresses > filter will let you filter the list. You can also search for individual addresses using ctrl+f.

your seed is not stored on the electrum website. it's only stored on your wallet file.

search for the program on your PC. most likely you didn't use the installer version so it didn't create shortcuts. perhaps downloading and installing the installer version will be easier?

it is better to create a new wallet and move your funds to it. the problem with using a restored wallet long term is that 2fa wallets create larger transactions than standard wallets so you'll pay higher transaction fees and won't be getting the benefit of 2fa protection either.

you can create a new wallet using this guide.

go to tools > preferences > fees tab and enable edit fees manually. then you'll see the fee calculation on the send tab.

alternatively click on preview on the send tab and the window that shows up should list the fee up top.

2.8.3 will also not recognize segwit outputs. you'll have difficulty receiving funds from exchanges.

Go to file > save copy and make a backup of your wallet file just in case. Then update electrum like you did last time.

I thought so too until I read this: https://bitcoin.stackexchange.com/a/38224/5273

Did you write down the seed words of your wallet? If you didn't then those funds are gone. The private keys that let you spend your bitcoin are derived from the seed so that writing that down makes it possible for you to easily backup your wallet.

The address is not secret information. It is what people use to send you money. If it was possible to spend money using your addresses anyone could spend your money.

If you want to do it on purpose then here's how. It is possible to replace the electrum dictionary with your own custom words. The key point is that the seed you generate with your custom dictionary is valid in any electrum installation even ones with the default dictionary. So create your own custom dictionary and include single letter "words" a..z and then use the make_seed cli command to generate seeds until you get one with a letter "word" in it.

Examples:

any agent cupboard figure taxi error skill tomato rely lawsuit r grief

carbon dial trumpet want ask slam rebuild rival n essay amused mushroom


The dictionary is in /usr/lib/python3/site-packages/electrum/wordlist . You can just appened a..z and 1...9 for instance to the default dictionary.

I am no longer certain that this should be classified as a bug. It's useful for people who make their own dictionaries