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I am not actively updating this gist and it is already out of date. Please see http://altheamesh.com/documents/universal-payment-channels.pdf

Universal Payment Channels

Jehan Tremback

Zackary Hess

Introduction

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package main

import (
	"fmt"
	"log"
	"strconv"

	"github.com/miekg/dns"
)

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Keybase proof

I hereby claim:

• I am xbee on github.
• I am hfeeki (https://keybase.io/hfeeki) on keybase.
• I have a public key ASBDrB24S_bT5duyk7y5e2GGKVl6AGjV6tf1bMATawyg2Ao

To claim this, I am signing this object:

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# In this example we're sending some test bitcoins from an address we control to a brand new test
# address. We'll be sending the coins using the following address, public and private keys (please
# don't abuse).
#  address : mtWg6ccLiZWw2Et7E5UqmHsYgrAi5wqiov
#  public  : 03bb318b00de944086fad67ab78a832eb1bf26916053ecd3b14a3f48f9fbe0821f
#  private : 1af97b1f428ac89b7d35323ea7a68aba8cad178a04eddbbf591f65671bae48a2

# 1. generate a one-shot dummy address we're going to send money to
$ curl -X POST http://api.blockcypher.com/v1/btc/test3/addrs
{

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// from: https://stackoverflow.com/questions/29963449/golang-like-defer-in-rust
//
struct ScopeCall<F: FnOnce()> {
    c: Option<F>
}
impl<F: FnOnce()> Drop for ScopeCall<F> {
    fn drop(&mut self) {
        self.c.take().unwrap()()
    }
}

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% Spiderweb Diagram
%
% Author: Dominik Renzel
% Date; 2009-11-11
\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{shapes}

\begin{document}

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% A complete graph
% Author: Quintin Jean-Noël
% <http://moais.imag.fr/membres/jean-noel.quintin/>
\documentclass{article}
\usepackage{tikz}
\usetikzlibrary[topaths]
% A counter, since TikZ is not clever enough (yet) to handle
% arbitrary angle systems.
\newcount\mycount
\begin{document}

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use std::net::TcpListener;
 
fn create_app_lock(port: u16) -> TcpListener {
    match TcpListener::bind(("0.0.0.0", port)) {
        Ok(socket) => {
            socket
        },
        Err(_) => {
            panic!("Couldn't lock port {}: another instance already running?", port);
        }

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func applicationDidFinishLaunching(aNotification: NSNotification) {
    /* Check if another instance of this app is running. */
    let bundleID = Bundle.main.bundleIdentifier!
    if NSRunningApplication.runningApplications(withBundleIdentifier: bundleID).count > 1 {
         /* Show alert. */
         let alert = NSAlert()
         alert.addButton(withTitle: "OK")
         let appName = Bundle.main.object(forInfoDictionaryKey: kCFBundleNameKey as String) as! String
         alert.messageText = "Another copy of \(appName) is already running."
         alert.informativeText = "This copy will now quit."