Re: [Bitcoin-development] RFC: MERGE transaction/script/process for forked chains

[Mark Friedenbach <mark@monetize.io>]

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Transactions != blocks. There is no need for a "merge" block.

You are free to trade transactions off-line, so long as you are
certain the other parties are not secretly double-spending coins they
send you on the block chain.

When connection to the bitcoin network is re-established, you simply
transmit the transactions and in the regular course of things they
make their way into one of the next blocks.

Any transactions which derive from the double-spent one are invalid.
But that's your problem, not the miners - chase after Bob and get him
to give you the money he owes.

On 12/17/2013 02:41 PM, Troy Benjegerdes wrote:
> I want to get some feedback.. I've used distributed version control
>  systems for a long time, and the most useful feature is to be
> able to merge two different forks.
> 
> So what's the equivalent of this for Bitcoin or other
> crypto-currencies?
> 
> Let's suppose that me and my friends get 'islanded' from the rest
> of the internet for a week, but we still want to trade bitcoin. It
> would work if there are local miners, until we reconnect.
> 
> Suppose we have the main chain (Alice), while bob is on a boat,
> trading with some friends, but has no network connectivity.
> 
> When bob reconnects with Alice, a 'Merge' transaction happens where
> a miner looks at bob's forked blockchain, sees no double-spends,
> and includes BOTH chains.
> 
> Now suppose someone on bob's boat has a buggy client, or sent a 
> transaction before disconnect that results in a double-spend on the
>  merge.
> 
> So we have a merge conflict, which generally requires human
> interaction, so bob and his friends broadcast a MERGE request with
> a transaction fee sufficient to cover reconciling the
> double-spends, AND incentivize a miner to do some extra work to
> merge.
> 
> Thoughts everyone?
> 
> -- Troy
> 
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