This document discusses using the Lightning Network to facilitate zero-cost onboarding between cryptocurrency exchanges. It proposes a new model where exchanges create a multi-party channel and then sub-issue channels to their individual customers, allowing for instant deposits and routing of funds between exchanges without requiring users to manage their own private keys. This could simplify the
![ビットコインにおける「マルチシグ」とは](https://cdn-ak-scissors.b.st-hatena.com/image/square/b7aa40d09d414873dc7d6f909ba04ab47c3beb1b/height=288;version=1;width=512/https%3A%2F%2Fcdn.slidesharecdn.com%2Fss_thumbnails%2Frandom-150225092838-conversion-gate01-thumbnail.jpg%3Fwidth%3D640%26height%3D640%26fit%3Dbounds)