Re: [Cryptography] Bitcoin Blockchain Has Been Forked (New: BitcoinCash UAHF)

On Wed, Aug 02, 2017 at 03:46:27PM +0200, Vasily Kolobkov wrote:

[2017-08-01 23:52 -0400] grarpamp

...

On Tue, Aug 1, 2017 at 7:39 PM, Phillip Hallam-Baker wrote:

...

So what happens if someone spends the coins on both forks???

Then your wallets are empty and you are broke.

Is there really a mechanism in BCC that enforces this?

Miners would need to interop with other chains in order to check for cross chain double spends of pre-fork outputs. Yet the communication between BCC and BTC seems unlikely given current state of affairs.

But there is a healthy self-interest in those accepting BTC for fiats and physical goods, to do that connection and monitor both forks, at least in the early days of the fork. I.e. the impulse to economic rationalist self interest shall undoubtedly be a sufficient impulse to the players involved to handle this potential problem.