Improving payment UX with low-latency route probing

Pending payments are a common UX problem for LN that users often complain about. While the cause of this problem is not easily unraveled, there have been several issues involving stuck intermediate nodes awaiting revocation and recipients who can’t give timely preimage replies.

Fabrice Drouin proposed a change to address the issue using a faster “proceed/try another route” answer using a probe with a short timeout requirement. The system sends the blank probe request prior to sending the actual payment, via the same route.

LN Splicing Proposal
Last week, a formal proposal was suggested on the Lightning mailing server by developer Rusty Russell on how we can implement Splicing in lightning channels (“top-up” and “drain” bitcoin from a channel). In this post we explain the concept and briefly review the proposal.
Move bitcoin UTXOs off-chain with Statechains
Statechains author @SomsenRuben gives several different depths of explanations for how statechains work including a short FAQ. Statechain aim to allow users to move bitcoin UTXOs entirely off-chain. Enables instant off-chain creation of Lightning channels, with the ability to easily add or remove funds, and more.
Workshop Summary Scaling Bitcoin V Tokyo 2018

Content originally published by BitcoinOptech on newsletter #16.


Introduction

The fifth Scaling Bitcoin conference was held Saturday and Sunday in Tokyo, Japan. In the sections below, we provide brief overviews to some of the talks we think might be most interesting to this newsletter’s readers, but we also recommend watching the complete set of videos provided by the workshop organizers or reading the transcripts provided by Bryan Bishop.