user56754: I'm new to cryptocurrency in general, and I'm still learning.  
Let's say someone moves BTC to a multi-signature wallet with a trusted provider, i.e. Greenaddress, before the split from an exchange. 
This now does not provide him with Bitcoin Cash too. 
Can someone please explain the process of obtaining the Bitcoin Cash that goes with his wallet's Bitcoin?
It seems that one can move to a wallet that does support Bitcoin Cash. 
But I'm not clear on the concept of the transfer of private keys/addresses from a wallet that does not support Bitcoin Cash to a wallet that supports Bitcoin Cash.
Is this possible, and how does it work? 
Would this transfer happen by simply converting Bitcoin to BCC, or would the BTC holder keep the BTC balance and gain a BCC balance in addition?

user44935: Unfortunately, if your wallet/exchange does not support BCC, then you have probably forfeited it i.e. left it to their disposal. The only way to find out would be to message their support and see if it is supported. If it is, you will automatically have a balance of both. There are a few exchanges supporting BCC trade including bitrex.com (or have a look at coinmarketcap.com →     Bitcoin Cash →     Markets)

user14871: Unfortunately if you had a default GreenAddress wallet (2of2) it is too late - you had to move funds out prior to bcash being born as per the blog post.
This is because the bcash altcoin (rightly) uses an anti replay protection mechanism which prevents the bitcoin transaction to be replayed on the bcash blockchain. This applies for both transactions made from the wallet as well as the timelocked recovery ones.
If you used a 2of3 wallet you can technically make any transaction type you want (on either chain) but you will need to use ad-hoc tools (if they exist) or create a new program/script that does what you desire given 2 keys in the multisig - however this is not very simple and error prone.
GreenAddress can't take or use the bcash coins either because of the multisig.

user72345: If you still need help retrieving your bitcoin cash, I made an online tool for recovering bitcoin cash from GreenAddress (there still might be some more unclaimed bitcoin cash).
Recovery tool link: https://bcash.charlesmoyes.com/
YouTube walkthrough: https://www.youtube.com/watch?v=A8KYvtMhMbI
Post on /r/bitcoin: https://www.reddit.com/r/Bitcoin/comments/7nme5o/online_greenaddress_bch_bitcoin_cash_recovery_tool/
Hope that helps,
Charles Moyes

56754: <p>I'm new to cryptocurrency in general, and I'm still learning.  </p>

<p>Let's say someone moves BTC to a multi-signature wallet with a trusted provider, i.e. Greenaddress, before the split from an exchange. </p>

<p>This now does not provide him with Bitcoin Cash too. </p>

<p>Can someone please explain the process of obtaining the Bitcoin Cash that goes with his wallet's Bitcoin?</p>

<p>It seems that one can move to a wallet that does support Bitcoin Cash. </p>

<p>But I'm not clear on the concept of the transfer of private keys/addresses from a wallet that does not support Bitcoin Cash to a wallet that supports Bitcoin Cash.</p>

<p>Is this possible, and how does it work? </p>

<p>Would this transfer happen by simply converting Bitcoin to BCC, or would the BTC holder keep the BTC balance and gain a BCC balance in addition?</p>
 44935: <p>Unfortunately, if your wallet/exchange does not support BCC, then you have probably forfeited it i.e. left it to their disposal. The only way to find out would be to message their support and see if it is supported. If it is, you will automatically have a balance of both. There are a few exchanges supporting BCC trade including <a href="https://bittrex.com" rel="nofollow noreferrer">bitrex.com</a> (or have a look at <a href="https://coinmarketcap.com" rel="nofollow noreferrer">coinmarketcap.com</a> &rarr;     Bitcoin Cash &rarr;     Markets)</p>
 14871: <p>Unfortunately if you had a default GreenAddress wallet (2of2) it is too late - you had to move funds out prior to bcash being born as per the <a href="https://blog.greenaddress.it/2017/07/24/uasf-segwit-softfork-enforcement/" rel="nofollow noreferrer">blog post</a>.</p>

<p>This is because the bcash altcoin (rightly) uses an anti replay protection mechanism which prevents the bitcoin transaction to be replayed on the bcash blockchain. This applies for both transactions made from the wallet as well as the timelocked recovery ones.</p>

<p>If you used a 2of3 wallet you can technically make any transaction type you want (on either chain) but you will need to use ad-hoc tools (if they exist) or create a new program/script that does what you desire given 2 keys in the multisig - however this is not very simple and error prone.</p>

<p>GreenAddress can't take or use the bcash coins either because of the multisig.</p>
 72345: <p>If you still need help retrieving your bitcoin cash, I made an online tool for recovering bitcoin cash from GreenAddress (there still might be some more unclaimed bitcoin cash).</p>

<p>Recovery tool link: <a href="https://bcash.charlesmoyes.com/" rel="nofollow noreferrer">https://bcash.charlesmoyes.com/</a></p>

<p>YouTube walkthrough: <a href="https://www.youtube.com/watch?v=A8KYvtMhMbI" rel="nofollow noreferrer">https://www.youtube.com/watch?v=A8KYvtMhMbI</a></p>

<p>Post on /r/bitcoin: <a href="https://www.reddit.com/r/Bitcoin/comments/7nme5o/online_greenaddress_bch_bitcoin_cash_recovery_tool/" rel="nofollow noreferrer">https://www.reddit.com/r/Bitcoin/comments/7nme5o/online_greenaddress_bch_bitcoin_cash_recovery_tool/</a></p>

<p>Hope that helps,</p>

<p>Charles Moyes</p>
