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Securing your free “Bitcoin Cash” stash – Ledger

A fork being traded on a Chinese exchange In the last days of July 2017, the Bitcoin miners have unanimously decided to signal for Segregated Witness, ending a years long scaling debate discussion. However a few participants decided to reject this decision and create their own Bitcoin fork, Bitcoin Cash (also known as BCC, ABC or UAHF)

As a result, all Bitcoin holders will be granted a new duplicated Bitcoin Cash balance (literally airdropped free money) if the fork activates — this post and the follow ups will describe how you can best secure this new balance, then decide to trade it, hold it or sell it as you wish.

If you don’t care about free money (in the form of a new BCC balance, equivalent to your pre-fork BTC balance), you can stop reading here — your regular Bitcoin balance is safe and you don’t have anything to do.

Otherwise you’ll need to stop transacting when the fork activate then perform a few operations to split your assets and guarantee the safety of your new free funds.

The fork is supposed to activate on Unix timestamp 1501590000 (1st of August 2017, 12:20 pm UTC — countdown available on, providing all participants have access to a synchronized and reliable time source.

If your Bitcoin funds are on a Ledger hardware wallet device, you will automatically get an additional BCC balance (same amount than your BTC balance) after the activation of the fork. Our Chrome app will provide in time a BTC/BCC selector. The replay problem

When two chains fork, they share a common history — thus any transaction valid on one chain can also be valid on the other chain depending on the rules of both chains. Even if both chains are not connected to each other, it is trivial for a third party to do so.

Therefore you have to be careful and split your assets before transacting — otherwise each transaction you perform could end up duplicated on both chains, which is not what you wanted t...

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