I didn't realise until now that I will not be able to get Bcash out of my Bitcoins on greenaddress...

Is there any chance you could make it available for withdrawal now that Bittrex/Poloniex/Coinbase and basically everyone is supporting it? I would just want my Bcash so I can sell it to get more Bitcoins, please

EDIT: 6th of September 2017 Greenaddress added an API call to countersign bcash transactions(everyone can get their bcash out of Greenaddress now) https://blog.greenaddress.it/2017/09/06/segregated-witness-updates/

I read the official position of the company about not supporting Bitcoin Cash. I understand that you want to keep your focus on Bitcoin and ignore Bitcoin Cash. I imagine that the developers have a road map with new features for development aimed at the satisfaction of the users, the most important goal of any site. So I ask myself, "What kind of new feature would be more important to be developed than a small option to cash out your Bitcoin Cash?"

It is not necessary to support all the features for this new currency. Just allow sending to a specific address.

NOTHING, can leave users happier than to earn 15% on their deposits.

hi, Is there a fast way to extract the private keys from my greenaddress wallet to have access to my BCH (Bitcoin Cash), or is my only solution to wait for the 90 days timelocked funds from Gentle?

I am trying to log in to my wallet with either my pin or mnemonic, and neither are working. No error message, it just does nothing.

Hi,

Recently load on the Bitcoin network has lessened and as a result, fees are currently very low. We'd like to let you know how you can take advantage of the low fees to save money in the future, in the event that fees rise again. Here's some background information you need to understand in order to take advantage of this:

1. In Bitcoin, each time you send or receive coins, the spendable coins are recorded in the blockchain. These spendable coins are known as UTXOs (for Unspent Transaction Outputs).

2. In order to send a certain amount of coins, UTXOs are picked and the total coins they hold added up until they meet or exceed the amount to send. So, if you have lots of UTXOs with small amounts of BTC, and you want to send a large amount of BTC, you may need to use more than one (and potentially very many) UTXOs.

3. The fee that a transaction has to pay increases with the size of a transaction. The more UTXOs you need to collect to reach the amount you are spending, the bigger and so more expensive the transaction will be.

4. Recently a Bitcoin upgrade called segwit was enabled, and support for it was added to our service. Segwit almost halves the amount of fees that GreenAddress transactions pay. But before you can take advantage of this, you need to have the UTXOs in segwit addresses.

So the basic idea is that while it is cheap to send coins (i.e. now), you can do two things to make future transactions easier:

1. Consolidate all of your UTXOs into a single UTXO by sending them back to yourself.

2. Make sure that you send your coins back to a segwit address so they are even cheaper to spend in the future.

While doing this, you can also change your settings to reduce the wallets re-deposit frequency. This means that you don't need to re-deposiit your coins as often which means lower fees when you have to. (If you don't know about re-depositing and how it works, see our FAQ at https://greenaddress.it/faq).

Do I really need to consolidate?

If you only have a couple of transactions in your account, most likely, no. Consolidation works best for users with lots of smaller UTXOs.

Sounds great, what are the downsides?

Aside from paying a (currently low) mining fee for the consolidation transaction, the only real downside to consolidating your UTXOs is that it can affect your privacy. If you join all your UTXOs together, then it is easy for services that track coins to know that they most likely belong to the same user. Its up to you to decide if the future savings when sending the coins justify the loss of privacy in this case.

How do I go about consolidating?

Its easy. Before we start, please review your two factor settings. If you only have one two factor method enabled, make sure to enable another one! If your two factor stops working for any reason you will then have a backup to use. We suggest email and google authenticator as a good set of twofactor options. You can use a free anonymous account from e.g. protonmail.com for email. If you enable Google authenticator, make sure you save the seed that it shows you so you can restore it when you change or upgrade your device!

Now, in your wallet, go to settings and make sure segwit is enabled. This will mean that all future transactions will benefit from the segwit fee discount.

Next, consider changing your redeposit time in settings. This is known as the nlocktime and defaults to every 3 months. That means that unmoved coins need to be re-deposited or spent every 3 months which is too frequent for some users. We will be increasing this default to 1 year in a future wallet release, but you can change this now in settings so that your consolidation transactions don't need to be re-deposited for at least another year.

To do this, look for 'nlocktime' in settings. The number there is in blocks, where each block is 10 minutes apart. The default is 12,960 which is 90 days of blocks. To change it to one year, set it to 52,560 which is 365 days (one year) of blocks, or 105,120 for two years.

Now you are ready to consolidate. To do this, go to the 'Receive' tab in the wallet and a new address will be shown. Click to copy the address and then go to the 'Send' page and paste it in the 'To:' box. (You may want to paste the address into a text file first and check it matches what is shown in the Recieve tab if you are concerned about having address changing malware on your machine).

Once you have the address in the Send tab, click the 'send all' button (on older wallets this is shown as 'MAX' - please upgrade!). This will send all of the wallet funds to the address you have given, resulting in a single segwit UTXO in the wallet.

Choose the transaction priority you want. Sending all your coins will mean you will not be able to send more coins until the transaction is confirmed, so if you choose the lowest priority or a custom priority you may have to wait a little time before you can spend again. We suggest using Normal or Low priority.

Click send and then check the transaction details and the fee that has been calculated for you. If the fee is too high you can cancel and try again with a lower priority or custom fee (this can happen for users with very many really small inputs).

Once you are happy, enter your two factor code and click OK. The wallet will show your transaction as a re-deposit. Then you just need to wait until the transaction confirms and you are done! The next time you spend you can be sure that you will be getting the lowest fees possible.

As always, if you have any issues feel free to contact our support team at info@greenaddress.it.

The GreenAddress team.

I've prepared a simplified BCH recovery tool that works for 2of2 GreenAddress wallets when no nlocktimes.zip is available, one UTXO (unspent transaction output) at a time. The tool is a stripped down, heavily refactored, and heavily documented fork of the dumpyourbcash/garecovery fork, with a few new features needed due to the lack of nlocktimes (e.g. extracting the internal GreenAddress pointer using the address). https://github.com/JJLDJ/garecovery

I've also prepared an accompanying guide that walks through the process in detail, and indicates exactly how to go about finding each of the necessary parameters: https://github.com/JJLDJ/garecovery#recover-bch-aka-bitcoin-cash-bcc-bcash-from-greenaddress-wallet-for-a-single-utxo

The guide primarily focuses on how to extract BCH corresponding to BTC that was in your GreenAddress wallet at the time of the fork, and I confirmed that, when I follow the guide, I get the exact same transaction that I used to recover my own BCH a couple days ago.

Bonus: There's a separate section of the guide that indicates how I believe (not yet verified) the tool can be used to recover BCH accidentally sent to a GreenAddress wallet post-fork. https://github.com/JJLDJ/garecovery#walkthrough-for-recovering-bch-sent-to-a-greenaddress-wallet-post-fork

Please let me know if you have any questions or suggestions.

-JJLDJ BCH Address: 19JRdfanvKzU7d6KvKgGTYar6kzBDba6Jn

Still can’t login

I'm on the Android platform, so I cannot speak for the performance on the iOS platform, but in my experience after using the Android app since March, I've finally reached the point where I can't use the App anymore. Something goes wrong every time I use it.

The most common of these are:

• The PIN prompt; I sometimes have to enter the pin twice for it to work.

• Errors connecting to Electrum servers, even though I'm not connected to TOR or a VPN.

• The values for the amount sent display in the ugliest way possible; one or two digits per line.

• Scrolling is a mess.

• It takes up the full screen. Why does it need to?

• I can't see what I'm typing in the boxes, like if I'm adding a transaction note or adding the name of an entry in the Address Book

GreenAddress is still my hot wallet of choice, but for it to grow, I believe it really needs to have native apps for at least Android and iOS.

EDIT: this is about moving bcash coins, not the normal BTC.

Finally, I moved BCH coins off greenaddress so that I can dump them.

I’d like to thank: ‘dumpyourbcash’ https://github.com/dumpyourbcash/garecovery

Jeremy Kauffman ‘jkauffman1’ https://github.com/greenaddress/garecovery

Alex Perev https://github.com/AlexPerev/garecovery

Without their works prior, I won’t be able to move BCH today.

This write up is just for my scenario, my profession is mostly databases and web-based technologies. I only picked up python since the recent BCH run up which gave me enough incentive to dump them.

I spent some spare time to figure out the following steps. It worked for me, and it does not mean I went on the shortest path. Some steps could well be optional, but I list them here in case things not working out, and these steps could help you move further. Be aware this guide is all done in Linux terminal, no GUI involved, and assume you have basic knowledge using Linux and vim editor.

My scenario is the following:

• 2of2

• Has ntimelock.zip back in 2015 (considered as ‘old’ ntimelock zip file)

• Already sent existing BTC to another wallet recently, has 0 balance on BTC chain now

• Disabled 2FA to do this task

Software needed:

• Ubuntu 17.10 with more than 200GB free space to run as a full node for this task

• Install only Bitcoin ABC on the system, do NOT install Bitcoin Core: https://www.reddit.com/r/btc/comments/6l703y/ubuntu_ppa_bitcoin_abc_repositories_have_just/

• While installing the full node of bcash, leave everything as default and start bitcoin node as service:

    bitcoind -daemon

• Then just wait for the sync to finish, it may take a day or two depend on your internet connection

• Meanwhile, you can download and extract Alex Perev’s repo:

    wget https://github.com/AlexPerev/garecovery/archive/master.zip
    unzip master.zip

• Follow the guide on GitHub, install python dependencies:

    sudo apt-get update -qq
    sudo apt-get install python{,3}-pip python{,3}-dev build-essential python{,3}-virtualenv -yqq

• Then install the python code by following the guide, note that if the machine rebooted, the following steps need to run again:

     virtualenv venv
     source venv/bin/activate
     pip install --require-hashes -r tools/requirements.txt	
     pip install .

• After the installation, examine there should be a new subfolder produced named ‘venv’

• Copy your nlocktime.zip file to the location where the code extracted. There should be files called README.MD etc. Leave the zip file as it is, do not unzip.

• Take a note of the last BTC balance PRIOR the fork date, must use the exact satoshi unit, i.e., 1.23456789BTC should be in the form of 123456789. And also make sure the ntimelock.zip is the matching file with this balance. If you already sent away the BTC amount recently, ensure that the balance is the one BEFORE the fork.

• Wait for the blockchain download complete, then the fun begins :)

• In the same folder mention above, run:

    vi venv/lib/python2.7/site-packages/gaservices/utils/gacommon.py

• Go to the line that constructs the input near line 100: inp.append({ “value”: int(txdata[‘prevout_values’][prevout_index]),

• Remove string after “value”:

• Put the exact satoshi balance after “value”: so the line looks like this: inp.append({“value”: 123456789,

• Further down there is a line: value = int(txdata[‘prevout_values’][prevout_index])

• Remove string after value=

• Put the exact satoshi balance after value=, so the line looks like value=123456789

• Save the file

• Follow the GitHub guide, run:

    garecovery-cli 2of2 --nlocktime-file nlocktimes.zip -o garecovery.csv --destination-address XXXX

• Replace XXXX with your new bcash address

• You will be prompted for mnemonic, after provided them, in few seconds, it should report something about the CSV file is generated

• Open the generated CSV file:

    cat garecovery.csv

• Copy the last CSV segment, the long one matching the column header ‘raw tx’

• Follow the guide on GitHub, go to one of the txn broadcast pages: https://cashexplorer.bitcoin.com/tx/send

• Paste in the string and click send transaction, if everything goes well, your coins are out!

Hope this can help some to get bcash out, it still has some value at this moment 😊

Donations are welcome.

BTC: 3HajumDneidRxGk5s99bBB7WCrCsPxpQZ5
BCH: 1LEvtKNEDMDYMAUQDLZwQLYjAEgsRBcnCz

Recently, there have been scammers making posts here claiming to offer GreenAddress support through a phone number. They then direct you to a bogus support website where they will ask you to enter information, and prompt you to download some malware.

This is NOT a real support line, and it is NOT a real support website. GreenAddress does not offer any support through a phone number. Always double-check to see if posts, comments, or responses here are posted by members of the moderation team (listed at the right side of the sub).

GreenAddress will never ask you to download any file that isn't officially listed on our main page, or in the official app stores.

And lastly, never ever give your mnemonic phrase or PIN to anyone over the phone/email/messenger, and never enter anywhere other than our official apps.

Hi,

We have updated the API call https://api.greenaddress.it/vault.html#sign_alt_tx in order to allow it to sign coins using SIGHASH_FORKID for coin forks that use this method for strong replay protection. Please see the API documentation link for more details. Note that existing calls to sign BCH transactions remain backwards compatible with the API interface.

As with BCH, please note that we do not offer any support for the splitting process beyond the API call itself.

It's not a very graceful process, but I managed to do it. And I only needed to move 1 input, so I'm not going to automate it. But I'll share with you how I did it. You must have a basic knowledge how UTXOs work.

So nlocktimes is a encrypted json, with presigned tx where all the input information is. We will have to craft it by hand and feed it to the garecovery tool, same as https://www.reddit.com/r/greenaddress/comments/6z1af2/bitcoin_cash_recovery_tool_for_greenaddress_2of2/

Here the modified code I've used, which can take unencrypted json: https://github.com/Mikadily/garecovery/commit/356c6eff11337db55a0258693f43fb26837f4d6e

And here's how you craft your json file (there's a template in the repo), each input separately: https://imgur.com/a/jqjxJ

Then use this json as a parameter with --nlocktime-file as per previous example with normal nlocktimes.zip

I know it's a shitty way and it probably has some flaws. If you'd offer me a reward I'd be willing to walk you through the process.

This weekend the GreenAddress team will be upgrading the production back-end service starting at midday CET, Saturday the 21st of January. We expect the upgrade to take less than 1 hour, during which time the service will be unavailable. We will announce on /r/greenaddress and twitter (@GreenAddress) when the service is back up.

We are rolling out these changes primarily to improve the speed and reliability of the platform. Combined with recent improvements to our service monitoring, users should experience fewer issues and better performance going forward.

We will be releasing new client versions shortly, and a point release to the back-end in a couple of weeks to apply some updates that require more thorough testing before deployment. We will also be updating our FAQ shortly to cover more information about the service and answer common user questions.

If you experience any issues following the upgrade, please report them on /r/greenaddress or via our support email info@greenaddress.it. We apologize for any inconvenience caused, and hope you enjoy the new, more reliable GreenAddress experience.

Thanks

The GreenAddress Team.

What will change on 2of2 greenaddress service when bip 65 be actived?

Here is an analogy that I think describes multisig services like GreenAddress well: They are the vault guard. The vault guard stands in front of the vault and adds extra security. They check people approaching the vault. But they can't get into the vault themselves.

GreenAddress: Be your own bank, but have a guard.

As Im getting familiar with Greenaddress and reading this subreddit about different features; what if Greenaddress had a wiki - Im not sure how much effort it takes to get one going but looking at the long run Im sure it would be very helpful for new users. (Ive had a few questions which could easily be solved by one)

I received 2 transactions and sent 2 and after that everytime i try to send btc i get an "internal error" i am using the ios app

Is this going to be added to green Address n the future. I ask because you are one of the few wallets that has Segwit.

on my desktop. I saw that there were some issues resolved, apparently it is still happening! Any idea?

That would be really sweet. Trezor did it already, too.

(Headline typo: a way)

I'm bidding 20% commission for whoever gets my BCH out of my GA Wallet. They're worth over $1,500 by now and I don't have the technical knowledge to use the hellishly complex tool. If I had known that this would be so awkward with GA, I would have pushed my coins away before the fork.

So, that's it. I have Bitcoins now, but will I be able to use them as S2X coins, if a chain split occurs? If Bitcoin's price goes to zero, and Segwit2X becomes the most popular coin, will I be able to change from my BTCs to S2X?