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261  Bitcoin / Bitcoin Technical Support / Re: hello every one i need help with old passphrase on: August 17, 2020, 06:50:45 PM
Even if the checksum does not validate to true the seed can still be valid this is a requirement in the protocol.

As far as i can see the 6 word phrase should be used as the salt or password in conjunction with the 12 word Mnemonic.

the bitcoin protocol has nothing to do with seed phrases. a wallet wouldn't generate an invalid bip39 seed.

what is the different between wallet.dat  and virgin_wallet.dat and full_wallet.dat ?
how do you know the address of that wallet without downloading all bitcoin core ?
is there away to know what kind of wallet.dat is  becouse i see etherum wallet and peercoin wallet and bitcoin-wallet-backup-2015-10-10 and Darkcoin-wallet-keys-2014-07-22
and Dash-wallet-backup-2015-08-23 and walletFTC ?
what is that ?



all files ?


 

how about you tackle one thing at a time? try restoring from the 12 word seeds using electrum like i said.
262  Bitcoin / Bitcoin Technical Support / Re: How was this address created on: August 17, 2020, 06:14:17 PM
I came across this address 1BitcoinEaterAddressDontSendf59kue
To generate a 1BitcoinEaterAddressDontSend address using VanityGen, you will need 3.3 E+33 or 3.3 decillion years.
Please tell me how you can generate an address of this length and with what?
Here is a link to the transactions https://btc.com/1BitcoinEaterAddressDontSendf59kuE
or do I not understand something?

vanity gen tries to generate both private keys and corresponding public keys that hash to an address with the prefix you want. that's why it takes so long because it's essentially a bruteforce effort.

making an address where you don't care about the private key is relatively easy. it's just a large number with a checksum.
263  Bitcoin / Electrum / Re: Electrum wallet on: August 17, 2020, 06:11:55 PM
electrum doesn't have a phone number. you likely have a fake version of electrum. i suggest you check your browser history for the exact download url. it should be download.electrum.org or just electrum.org.
264  Bitcoin / Bitcoin Technical Support / Re: hello every one i need help with old passphrase on: August 13, 2020, 05:28:24 PM
If you need a fast way to check all the addresses, just copy/paste them into a new Electrum "watching-only" wallet ("File" -> "New/Restore" -> "Import Bitcoin addresses or private keys")... it'll find any/all transactions relating to those addresses and you'll be able to see which ones still have a balance.

NOTE:
- don't try and use the 6 word passphrases, that won't work in Electrum... just copy/paste the addresses. At least that way you'll see whether or not there is actually anything to find Tongue


I'm not aware of ANY wallets that used a 6 word passphrase... and because these 6 word phrases seem to be attached to one specific address, I don't think they are a true "seed mnemonic" for an HD/BIP39 wallet, but as mentioned earlier... I'd think they were some sort of "brain wallet"... or maybe some other custom system used to create private keys from words???


Given that the address from your screenshot: 1A9Tp3JjDvyQUtyQYLdDdCqMgK12sVZ238 is empty and has never actually been used, would you be willing to provide the 6 word passphrase for this address so people could try and figure out the system used? Huh or is it the same passphrase for ALL the addresses? Huh

and the 12 seed not working in elctrum
it give me wrong address  like this one
bc1qc4fdk5re3r08msaelnndnywnh9pec5p5tqh9kv

You must change the type of address to 'legacy', not segwit.

the address have .1 btc but in electrum have zero ?

start again as per this guide: https://bitcoinelectrum.com/restoring-your-standard-wallet-from-seed/

pay attention to the what it says next to the options button in step 4. if it doesn't let you proceed then you can try checking bip39 under options. after you do that it should show bip39 checksum ok. if it doesn't then you have a seed that is neither electrum nor bip39 and you can't use it with electrum.

then in step 5 select legacy as the script type. try the default bip44 derivation path and if that doesn't work then try the one for multibit hd:

https://bitcoinelectrum.com/restoring-your-multibithd-wallet-in-electrum/



265  Bitcoin / Electrum / Re: Pending vs Unconfirmed Electrum 4.0.2 on: August 11, 2020, 07:49:41 PM
essentially the send and receive tabs don't tell you about transactions involving your wallet. you should only trust the history tab for that.
266  Bitcoin / Electrum / Re: Where does verifying the signature help? on: August 11, 2020, 07:27:01 PM
In electrum.org it says that hackers can hack the site and replace their own software that hides malicious code in the electrum software.

It says that we have to verify the signature of electrum.org, in order to be sure that the software was not compromised. Now I'm asking, why are we 100% sure that they can't change his signature too? Also, by that tutorial of how to verify electrum I don't get why should I trust gpg4win.org, couldn't this site get compromised as well?

And a bigger question, how exactly can you compromise a site?? Is this possible? Does google.com differs from electrum.org?

Anyway, back to the point, I have reset my windows 10 laptop. I've downloaded from another laptop electrum-4.0.2-setup.exe and then I transfered it to a usb. The clear laptop (the one I reset) is not internet connected and it'll never be. I've verified the signature (same way, downloaded to my old laptop and transfered the file with a usb).

Is this a purely cold storage? Can I buy a thousands bitcoins now without having the fear of losing my coins?

digital signatures that are modified are no longer valid. they will not verify.

gpg4win provides an easy to use gui frontend to gnu privacy guard on windows. its releases are also gpg signed so you can verify them. there are alternative software that you can use gpg itself or kleopatra which is cross platform.



Quote
Is this a purely cold storage? Can I buy a thousands bitcoins now without having the fear of losing my coins?

yep
267  Bitcoin / Electrum / Re: Where does verifying the signature help? on: August 11, 2020, 07:25:23 PM
In electrum.org it says that hackers can hack the site and replace their own software that hides malicious code in the electrum software.

It says that we have to verify the signature of electrum.org, in order to be sure that the software was not compromised. Now I'm asking, why are we 100% sure that they can't change his signature too? Also, by that tutorial of how to verify electrum I don't get why should I trust gpg4win.org, couldn't this site get compromised as well?

And a bigger question, how exactly can you compromise a site?? Is this possible? Does google.com differs from electrum.org?

Anyway, back to the point, I have reset my windows 10 laptop. I've downloaded from another laptop electrum-4.0.2-setup.exe and then I transfered it to a usb. The clear laptop (the one I reset) is not internet connected and it'll never be. I've verified the signature (same way, downloaded to my old laptop and transfered the file with a usb).

Is this a purely cold storage? Can I buy a thousands bitcoins now without having the fear of losing my coins?

digital signatures that are modified are no longer valid. they will not verify.

gpg4win provides an easy to use gui frontend to gnu privacy guard on windows. its releases are also gpg signed so you can verify them. there are alternative software that you can use gpg itself or kleopatra which is cross platform.

268  Bitcoin / Electrum / Re: Can someone help a noob with an Electrum problem on: August 07, 2020, 09:40:36 AM
lol he got asked a dozen questions and he ignored all of them
269  Bitcoin / Electrum / Re: Unconfirmed Transaction on: July 28, 2020, 06:47:50 AM
This kind of problem normally occurs when the network is busy, try increasing the fee or target it to within 5 blocks so your transaction will confirm faster. -snip-
Nope II, it's a local transaction which wasn't broadcast to the network yet as already pointed by others.. twice.

As the error message says the server does not know about it. It simply means the transaction is not in the mempool of the server you are connected to and neither has it been incorporated in the blockchain. You may or may not have broadcast it. It's possible for a transaction to be broadcast but not reach every node in the network. It's also possible that the server you are connected to knew about the transaction but ejected it from its mempool because it learned of higher paying transactions.
270  Bitcoin / Mycelium / Re: Mycelium Wallet on: July 25, 2020, 04:55:54 PM
ios version has been abandoned. I suggest restoring from seed on android or using a bip39 compatible PC wallet like copay.
271  Bitcoin / Bitcoin Technical Support / Re: Found 74k Bitcoin on my old machine, how i can recover ? on: July 25, 2020, 04:54:19 PM
Thank you all for the answers.

That's not "scam" LOL, as far as I know.

Some points that may make some difference.

I believe that 50 BTC's are old (very), at the time we can mine with normal GPU's.

I received these rewards and they were not propagated in the network correctly, they can be contained in my "wallet.dat".

Why  when i make "getbalance" i saw all these BTC's ?

Sorry but i dont have knowlegde to solve this alone



Bitcoin transactions that are not recorded in the blockchain aren't really bitcoin transactions. You haven't received anything.

It could be an altcoin wallet. All the bitcoin forks would have the same block reward though.
272  Bitcoin / Electrum / Re: Automatic notifications on: July 25, 2020, 04:49:57 PM
electrum has a notify option which can tell a script about transactions relevant to your wallet. then your script can move your coins using electrum. type `electrum help` on the command line  (linux,macosx only) or use the json rpc interface:

https://electrum.readthedocs.io/en/latest/jsonrpc.html

273  Bitcoin / Electrum / Re: Playing with multisig: unable to sign on: July 25, 2020, 04:45:26 PM
You have to select  multisignature wallet, choose number of cosigners and signatures required and then "use a hardware device". This last step you repeat for each of the ledger devices. Then for the final cosigner you can have it generate a seed for you.
274  Bitcoin / Electrum / Re: Electrum 4.0.2 imported wallet from Bitcoin Core, cannot send BTC cannot get key on: July 16, 2020, 04:44:00 PM
there was a wallet file corruption bug in previous versions. you may have been hit by that. i suggest starting over on a fresh PC. leave your current system untouched for reference purposes. restore from the private keys corresponding to addresses with unspent outputs (coins).

The problem is as mentioned above. I have only select private keys, the Addresses that Electrum made from who knows where,

i should have included a link to the relevant github issue. the wallet file corruption bug results in wallets displaying addresses from a different seed/wallet. it requires you to have generated more than one wallet in a session and for you to have a dodgy drive. for example USB drives are disproportionately effected.



https://github.com/spesmilo/electrum/issues/5082

another possibility is that you simply have a watch only wallet. in that case it should say watch only in the title bar and under wallet > information.
275  Bitcoin / Electrum / Re: Electrum 4.0.2 imported wallet from Bitcoin Core, cannot send BTC cannot get key on: July 16, 2020, 03:03:18 PM
there was a wallet file corruption bug in previous versions. you may have been hit by that. i suggest starting over on a fresh PC. leave your current system untouched for reference purposes. restore from the private keys corresponding to addresses with unspent outputs (coins).
276  Bitcoin / Electrum / Re: Electrum 4.0.2 imported wallet from Bitcoin Core, cannot send BTC cannot get key on: July 15, 2020, 02:31:51 PM
if you have the private keys in bitcoin core you can just use that. or you can create a new electrum wallet with those keys:

https://bitcoinelectrum.com/importing-your-private-keys-into-electrum/
277  Bitcoin / Electrum / Re: Can a watch-only wallet sign messages from its addresses? on: July 08, 2020, 12:47:38 PM
just because you can store 256 versions/address types doesn't mean you have to use all of them today. you can use the ones you need to and leave the rest for future expansion. or use a smaller number of bits for the version/address type like 4 or 6 bits.

electrum actually uses a system where the first 4 bits tell you how long the version number is. it's very flexible and perhaps overkill.

a single byte would allow for 256 different address types (2^8).

not if you use it as a "flag". then each bit has a separate meaning and can be combined with other bits. if you use integer values (1, 2, 3,...) then you'll have to define a lot of different cases (1-> x, 2->y, 3->z,... 50->x+y, 60->x+z,...). that makes implementation a nightmare.
in contrast using 0b00000001->x, 0b00000010->y is enough because x+y is 0b00000011 with a simple OR (x|y)

what's the advantage of doing bitwise operations like these on the version bits? seems like a poor use of space to me.
278  Bitcoin / Electrum / Re: Can a watch-only wallet sign messages from its addresses? on: July 08, 2020, 09:11:49 AM
a single byte would allow for 256 different address types (2^8).
279  Bitcoin / Electrum / Re: Electrum 4.0.1 and offline transaction signing on: July 07, 2020, 01:29:48 PM
note you export not save. save will save it to the wallet file.

280  Bitcoin / Electrum / Re: Can a watch-only wallet sign messages from its addresses? on: July 07, 2020, 01:27:20 PM
there is no bip.
Can you explain what you mean by this? yprv is explained in BIP49 and zprv is explained in BIP84.

Extended public keys use 0x049d7cb2 to produce a "ypub" prefix, and private keys use 0x049d7878 to produce a "yprv" prefix.
Extended public keys use 0x04b24746 to produce a "zpub" prefix, and private keys use 0x04b2430c to produce a "zprv" prefix.

They are both also registered in SLIP0132, along with their multi-sig equivalents: https://github.com/satoshilabs/slips/blob/master/slip-0132.md

Do you mean that they didn't originally come from a BIP?

TIL! I thought it was an electrum only concoction.
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