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7081  Bitcoin / Electrum / Re: Claiming Bitcoin Cash and Gold On New Computer and Nano Ledger S? on: December 12, 2017, 03:16:47 AM
Yes, 24 words is all you need to recover to either another Ledger, a Trezor, a KeepKey or any BIP32/39/44 compatible wallet.

https://ledger.zendesk.com/hc/en-us/articles/115005297709-On-which-wallet-can-I-restore-my-wallet-if-I-lose-my-Ledger-device-

NOTE: The list is a bit outdated... as you can definitely restore to Electrum now.
7082  Bitcoin / Electrum / Re: [TUTORIAL] How to extract Bitcoin Gold from a 2fa Electrum Wallet [STEP BY STEP] on: December 12, 2017, 01:34:00 AM
I did it again now, its the second address for sure. Same error:
66: min relay fee not met (code -26)
No... it just sounds like you're not setting the amounts properly... and your "fee" is too low... I'm sent you a PM regarding this.
7083  Economy / Web Wallets / Re: Who can help contact blockchain support on: December 12, 2017, 01:23:50 AM
I tried and it displayed this message on browser https://imgur.com/a/vpaeZ
As I feared... that "hack" no longer works Sad

Unfortunately, I'm all out of ideas... you're at the mercy of b.info tech support... unless someone else has any other clever ideas? Huh (that are NOT "restore from seed" Roll Eyes)
7084  Bitcoin / Development & Technical Discussion / Re: How does an HD wallet know about addresses created from Master Public Key? on: December 11, 2017, 10:38:56 PM
I suspect you'll find it is the derivation path he is using is incorrect.

I'll guess he has gone with the "standard" m/44'/0'/0' derivation path specified in BIP44 and used by hardware wallets etc... most likely used if it was done by a "library". The problem is that Electrum uses a derivation path of m/0

Both paths will generate "valid" public keys/addresses... but they'll be different.
7085  Economy / Web Wallets / Re: Who can help contact blockchain support on: December 11, 2017, 10:10:33 PM
The only other idea I have is to try and download the JSON for the wallet... after you login, try entering the following into the browser URL textbox:
Code:
https://blockchain.info/wallet/YOUR-WALLET-ID?format=json

This would be something like: https://blockchain.info/wallet/594c45ac-1234-42bb-84bf-69b7b057d7c9?format=json

Hopefully, it will give you the JSON code for your wallet... but most likely, I think it'll just give you an "authorisation required" error Undecided

If that doesn't work, then all you can do is wait for Blockchain.info support to answer your ticket Sad
7086  Bitcoin / Electrum / Re: Electrum Cold Storage on: December 11, 2017, 10:05:33 PM
My BTC has just been left in my online account with the exchange, which apparently is unwise hence why I'm going to put my BTC offline in cold storage.
You are now smarter than the average Bitcoin user Tongue

Yes, keeping coins on Exchanges "long term" is a terrible idea. As the saying goes "If you don't control the private keys, you don't control the coins"... and I'm not aware of ANY exchanges that give the users control of the private keys for their accounts. Undecided
7087  Bitcoin / Bitcoin Technical Support / Re: Do private keys remain the same once sweeped? on: December 11, 2017, 09:52:27 PM
Maybe I didn't explain clearly enough as some of the replies seem a bit conflicted. I was asking if the old private keys which I have now sweeped into electrum remain the same after being sweeped, or does the new wallet which they have been sweeped into generate new private keys? In other words, are the old private keys still active and remain the same inside the new wallet?
Sweeping does not "change" private keys. It simply moves coins from one set of private keys to another, exactly like a normal Bitcoin transaction does. Perhaps this will help?

Sweeping:

Before sweep:
Old private keys: 1 BTC + 1 BCH
New private keys: 0 BTC + 0 BCH

"Old Bitcoin Wallet" - Old private keys
    |
    | Sweep
    |
    V
New Electrum wallet - New private keys

After Sweep:
Old private keys: 0 BTC + 1 BCH
New private keys: 1 BTC + 0 BCH



Importing:

Before import:
Old private keys: 1 BTC + 1 BCH

"Old Bitcoin Wallet" - Old private keys
    |
    | Import
    |
    V
New Electrum wallet - OLD private keys

After Import:
Old private keys: 1 BTC + 1 BCH
7088  Bitcoin / Electrum / Re: [TUTORIAL] How to extract Bitcoin Gold from a 2fa Electrum Wallet [STEP BY STEP] on: December 11, 2017, 09:34:42 PM
Thanks for all the work, but it did not work for me...
After inserting the final code (with the final hex) i get this message: "Missing inputs (code -25)"
This means the "inputs" you are trying to spend, have already been spent in a BTG transaction. Check your addresses on www.btgexplorer.com and make sure that the "Final Balance" is greater than 0.00000000. If it isn't, then that address is empty and does not contain any BTG.


Mybtgwallet stole the private keys and then made transactions both on bitcoin core and bitcoin gold (and bitcoin cash), then people lost everything
And like I said... if those private keys contained NO BTC or BCH before people put them into the scam wallet... would the thief have got 260+ BTC? no... he would only have got the BTG.

Would you rather have lost 0.01 BTG AND 1 BTC+0.1 BCH ... or just 0.01 BTG? Wink


Quote
I think that you could advise to send your coins first to reduce the possibility of such attack but it's not mandatory, neither very important and can give the strange feeling that I got about the whole thing (not talking about the fact that @approximatesunlight is unknown which does not help to trust a sensitive tutorial)

That's not a technical explaination neither and people deserve to know what they are doing
It has been a recommended practice by pretty much EVERYONE since BitcoinCash was announced to have replay protection. Hell, some folks were advocating claiming coins on a completely separate computer/device! In any case, I don't know why moving your coins from one Electrum wallet to a new Electrum wallet with a new seed is such a big deal? Huh (aside from the transaction fees)


Quote
The only issue I see is that you expose the redeem script (and therefore the public keys), that someone else could replay on bitcoin core to steal you coins
You are typing the seed into your computer... and exporting the xprvs for your 2FA wallet in plaintext. In my opinion, that is reason enough to make sure they contain as little value as possible.



Question: I am implementing both, but do you know what is the most used between two of two and two of three? (the rationale of the question is that in the first case you don't need to find the redeem script, not sure if it helps a lot since it looks easy to get it from his wallet)
2FA wallets (which this tutorial is aimed at) is ALWAYS "2-of-3". No idea about MultiSig, but the most common ones seem to be "2-of-3" and "2-of-2".
7089  Bitcoin / Electrum / Re: Claiming Bitcoin Cash and Gold On New Computer and Nano Ledger S? on: December 11, 2017, 09:15:47 PM
Yes, you just goto "Wallet -> Password"... and then enter your current password... and then a "new" password (can actually be the same as your current password)... and tick the box that says "Encrypt wallet file"
7090  Bitcoin / Electrum / Re: [TUTORIAL] How to extract Bitcoin Gold from a 2fa Electrum Wallet [STEP BY STEP] on: December 11, 2017, 01:21:57 PM
- you don't tell people to use the tools where they put their seeds offline, they are js tools and everything stays local, ok, but you never know, so it does not cost anything to tell them to disconnect when they use them, and to clear everything in their browser after they have used them before they reconnect
Huh... to be honest, I didn't even notice that he hadn't included a warning to run all the tools offline. That's pretty much a standard warning! Should definitely be added into the beginning of the Tutorial... in NICE BIG LETTERS Wink


Quote
- you tell them to "move all their BTC" to another wallet, what does it mean and why?
By moving your BTC off the old private keys/seed before you start "exposing" them, you are reducing the possibility of losing your BTC due to your private keys/seed being leaked... only your BTG is potentially at risk (and any other fork coins still on the old private keys).

If ALL the users of mybtgwallet.com had moved their BTC off their private keys/seeds and into new wallets prior to entering the old private keys/seeds into the scam wallet... how much BTC would the scammer have got? 0.0 BTC Tongue
7091  Bitcoin / Electrum / Re: Electrum Cold Storage on: December 11, 2017, 01:11:57 PM
I get the parts involving setting-up an offline cold wallet and an online watch-only wallet, but not where sending BTC (to that two-part wallet) is concerned.
What you wrote, and what is included in online instructions for the Electrum wallet setup process, makes no sense to me.

I want to transfer BTC from the exchange where they were purchased into the Electrum cold wallet.  What you describe is sending money from the watching wallet.
You just want to send some coins tO your wallet? That's easy... In the watching-only wallet, simply click on the "Receive" tab... it will give you an address to send to. You copy/paste that address to the withdraw/send page on the Exchange. They will then send the coins to that address.

You can get the address from either the offline wallet or the watching-only wallet. If they are configured correctly, they will generate identical addresses. The watching only wallet is essentially a "clone" of the offline wallet WITHOUT the private keys. I'd recommend using the watching-only wallet for the day to day tasks like generating addresses, checking balances etc. The offline wallet should only really be used for signing transactions.


ps. You should double check that your offline wallet and your watching only wallet ARE actually generating identical addresses before you start sending coins to your wallet Wink
7092  Bitcoin / Electrum / Re: Segwit addresses on Electrum on: December 11, 2017, 01:00:21 PM
yes. You can have a segwit addresses starting with 3 on electrum (better then the one starting by bc1 used by default as segwit on electrum).

1) generate a bip39, 12 words seed on https://iancoleman.io/bip39/ (use it offline for more security)
2) on electrum choose, create new wallet, I already have a seed, then on "options" choose bip39, paste the seed then click next
3) on derivation path path use: m/49'/0'/0'/0

that's all
You might want to double check the Private keys that Electrum is generating using this method. I just tried this, and the public address and public key are the same as the BIP39 Mnemonic Code Converter... but the private keys are different??!? Huh Huh Huh

Electrum private key: LLCKoLPeE5sfCn79kUe9eqWFN32UYip2CjdmsJ48UgbHqxMcBxyD
BIP39 private key: L334f1fqsn3PFk5ceKrN4VKGsAdAstGZsrPWkPMwVj5sHHv9mebd

Pubkey: 02f5bd4fab452b5b850d6131175d5d9ac64079fa230e6e68f6660d1ede80b02dd5
Address: 39tWyTGX4K75Z1Bni9nR2qHWVJjRU5wZRQ

I tried putting the private key generated by Electrum into bitaddress.org and it says "Invalid, version 130 not supported"...
7093  Bitcoin / Electrum / Re: Electrum specify change address? on: December 11, 2017, 11:18:37 AM
You really need to read this: https://en.bitcoin.it/wiki/Change

and this: https://en.bitcoin.it/wiki/coin_analogy

It will answer all your questions how and why this has happened (and why it will happen in the future).
7094  Bitcoin / Armory / Re: Guide: Bitcoin Cash (BCH) & Bitcoin (BTC) w/ Armory on: December 11, 2017, 11:12:14 AM
I believe you need a BCH node... so you'll need to get BitcoinABC... and BE VERY CAREFUL where you install it to and what directory you tell it to use for it's DataDir, as by default, it will try to install to and use the same directories as Bitcoin Core Sad Undecided Roll Eyes

I hope you have ANOTHER 150gigs of free harddrive space Tongue

Once you have that fully synced you should be able to use Armory with it to create the transactions you need.
7095  Bitcoin / Armory / Re: Confirmed TX on the blockchain not showing up as even on the blockchain in armor on: December 11, 2017, 11:09:40 AM
Might want to investigate this:
Quote
2017-12-08 18:24:21 (INFO) -- ArmoryUtils.pyc:1290 -    Available HDD (ARM)   : 66 GB
2017-12-08 18:24:21 (INFO) -- ArmoryUtils.pyc:1291 -    Available HDD (BTC)   : 0 GB
Seems like you might have run out of harddrive space where your Bitcoin Core datadir is... Undecided
7096  Bitcoin / Development & Technical Discussion / Re: Status is pending due to verification of my bankdata on: December 11, 2017, 11:01:28 AM
You're in the wrong place... you need to contact the support people for the wallet you tried to transfer funds to. This is just a forum, a message board for the general public. It isn't related to any one particular service. It isn't likely that anyone here has access to the service provider you are using.
7097  Alternate cryptocurrencies / Altcoin Discussion / Re: Verge Paper wallet on: December 11, 2017, 10:49:12 AM
You'll need to put your address (NOT YOUR PRIVATE KEY) into a "verge" block explorer... try googling "verge block explorer"
7098  Economy / Web Wallets / Re: Who can help contact blockchain support on: December 11, 2017, 10:47:04 AM
what happens if, after you have done the login and got to the welcome screen, instead of clicking "continue", you type:
Code:
https://blockchain.info/wallet/#/home
As the URL in the same browser window? Does it still log you out to the blockchain homepage? Or does it take you to the wallet dashboard?

7099  Bitcoin / Mycelium / Re: Mycelium Bitcoin Wallet on: December 11, 2017, 10:38:53 AM
Hello! I am an editor from icoholder.com. Your IСO was added to our listing and now is available to investors: https://icoholder.com/en/ico/mycelium-3167
Only 18 months after the ICO ended... Roll Eyes
7100  Bitcoin / Electrum / Re: Claiming Bitcoin Cash and Gold On New Computer and Nano Ledger S? on: December 11, 2017, 10:30:32 AM
Ok... so Electrum wallet has three levels of password protection/encryption:

1. No password - Wallet file and ALL of it's contents are in plaintext - NOT RECOMMENDED

2. Password/No File Encryption - The important parts (private keys/seed) of the wallet are encrypted, rest is in plaintext - MINIMUM RECOMMENDED LEVEL

3. Password/Wallet File Encrypted - The important parts (private keys/seed) are encrypted AND then the whole file is encrypted - HCP's RECOMMENEDED LEVEL


With 1. - Anyone who gets a hold of your wallet file, can basically take all your coins
With 2. - Anyone who gets a hold of your wallet file, will only have access to addresses and transaction info... private keys/seeds are still encrypted... not ideal, but it should slow them down long enough to move all your coins to safety (assuming you have a decent password 10+ characters/numbers/symbols etc).
With 3. - Anyone who gets a hold of your wallet file has access to nothing (assuming you have a decent password 10+ characters/numbers/symbols etc)

I personally recommend 3... for "normal" Electrum wallets.

When used with a hardware wallet... you (currently) DON'T GET TO SET A PASSWORD. You run at Level 1.


As for which software to use, like I said... try them all out. There is nothing stopping you from trying Ledger Chrome app, Electrum or any of the other compatible wallets until you find the one you like the best.
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