On 2/11/2015 10:47 PM, Peter Todd wrote: > My replace-by-fee patch is now available for the v0.10.0rc4 release: > > https://github.com/petertodd/bitcoin/tree/replace-by-fee-v0.10.0rc4 >
This patch immediately simplifies successful double-spends of unconfirmed transactions. But the idea that it "gives a path to making zeroconf transactions economically secure" is quite dubious. * You don't provide sufficient means to detect and relay double-spends, which is necessary to trigger a scorched-earth reaction. Not all double-spends will conform to your replacement rules. * Maybe XT nodes would help to overcome this. But meanwhile, in the ANYONECANPAY design, Bob's replacement is a triple-spend. Even XT nodes won't relay it. * It's unclear when, if ever, any senders/receivers will actually try to use scorched-earth as a double-spend deterrent. Also, this patch significantly weakens DoS protections: * It removes the early conflict check, making all conflict processing more expensive * There is no attempt to protect against the same transaction being continually replaced with the fee bumped by a minimal amount. ------------------------------------------------------------------------------ Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server from Actuate! Instantly Supercharge Your Business Reports and Dashboards with Interactivity, Sharing, Native Excel Exports, App Integration & more Get technology previously reserved for billion-dollar corporations, FREE http://pubads.g.doubleclick.net/gampad/clk?id=190641631&iu=/4140/ostg.clktrk _______________________________________________ Bitcoin-development mailing list Bitcoin-development@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bitcoin-development
