From jr at mit.edu Mon Aug 10 15:03:56 2015 From: jr at mit.edu (Jeremy Rubin) Date: Mon, 10 Aug 2015 11:03:56 -0400 Subject: [Lightning-dev] A couple questions about sequence number: Message-ID: Hi! A couple questions about the use of sequence numbers in lightning. Please forgive me if these are somewhat rudimentary. 1) Can someone better outline what the race conditions are? It seems certain things time out w.r.t. the bitcoin blockchain height, which seems negative with respect to censorship vulnerability. How is this addressed? Section 9.5 of the paper seems unsatisfactory. 2) Using sequence numbers to select the right transaction to include is good, but it would seem to leak information about how many LN transactions took place, which could then make it meterable by external parties. (eg, a miner could make the fee for settling proportional to it). Perhaps incrementing by a random amount would alleviate the ability to reliably meter. Maybe it is good that this can be metered? Cheers, Jeremy -- @JeremyRubin -------------- next part -------------- An HTML attachment was scrubbed... URL: