Re: [Bitcoin-development] The Bitcoin Freeze on Transaction Attack (FRONT)

2014-10-05 Thread Alex Mizrahi
I've heard about this idea from TierNolan. Here's some quick an dirty analysis: Suppose the last known block claimed a large tx fee of L. A miner who owns 1/N of the total hashrate needs to choose between two strategies: 1. Mine on top of that block and win usual reward R with probability 1/N. 2.

Re: [Bitcoin-development] The Bitcoin Freeze on Transaction Attack (FRONT)

2014-10-05 Thread Jorge Timón
On Mon, Oct 6, 2014 at 1:40 AM, Gregory Maxwell wrote: > Something you might want to try to formalize in your analysis is the > proportion of the network which is "rational" vs > "honest"/"altruistic". Intuitively, if there is a significant amount > of honest hashrate which is refusing to aid the

Re: [Bitcoin-development] The Bitcoin Freeze on Transaction Attack (FRONT)

2014-10-05 Thread Gregory Maxwell
On Sun, Oct 5, 2014 at 4:54 PM, Jorge Timón wrote: > In any case, it is interesting to think about this things since mining > subsidies will eventually disappear and then transaction fees will > ALWAYS be higher than subsidies. You can imagine that instead of subsidy Bitcoin came with a initial s

Re: [Bitcoin-development] The Bitcoin Freeze on Transaction Attack (FRONT)

2014-10-05 Thread Gregory Maxwell
On Sun, Oct 5, 2014 at 4:40 PM, Gregory Maxwell > I should point you to some of the tools that have been discussed in > the past which are potentially helpful here: Ah, I should also mention a somewhat more far out approach which helps here as a side effect: If transactions were using the BLS sh

Re: [Bitcoin-development] The Bitcoin Freeze on Transaction Attack (FRONT)

2014-10-05 Thread Gregory Maxwell
On Sun, Oct 5, 2014 at 4:00 PM, Sergio Lerner wrote: > I would like to share with you a vulnerability in the Bitcoin protocol I've > been thinking of which might have impact on the future of Bitcoin. Please > criticize it! > The Freeze on Transaction Problem I should point you to some of the tool

[Bitcoin-development] The Bitcoin Freeze on Transaction Attack (FRONT)

2014-10-05 Thread Sergio Lerner
I would like to share with you a vulnerability in the Bitcoin protocol I've been thinking of which might have impact on the future of Bitcoin. Please criticize it! *The Freeze on Transaction Problem * The freeze problem occurs if someone publishes a transaction with fees much higher than the bloc