urza

Softchains: Sidechains as a Soft Fork via Proof-of-Work Fraud Proofs

This post describes a fully decentralized two-way peg sidechain design. Activating new sidechains requires a soft fork, hence the name softchains. The key aspect is that all softchains are validated by everyone via Proof-of-Work Fraud Proofs (PoW FP) -- a slow but very efficient consensus mechanism that only requires the validation of disputed blocks. This does increase the validation burden of mainchain full nodes, but only by a minimal amount (~100MB per chain per year). It's similar to [drivechains][0], but without the major downside of having to rely on miners, since all Bitcoin full node users can efficiently validate each sidechain.

Proof-of-Work Fraud Proofs

Last year I posted the idea of [PoW FP to the Bitcoin mailing list][1] ([follow-up here][2]). The idea is that we can use the existence of a fork in Bitc

Lightning transactions: from Zero to Hero

This gist contains everything you need to understand Bitcoin/Lightning transactions. We ignore segwit subtleties and fields that aren't necessary for our global understanding.

Introduction

I'm Ruben Somsen, Bitcoin Sorcerer. I do protocol design in order to enhance Bitcoin.

I'm sponsored by Spiral, Superlunar/Gemini, HRF, and am currently working on Silent Payments with Josie and assisting Davidson with the implementation of Proof-of-Work fraud proofs into Floresta.

I also help maintain the bitcoin-dev mailing list, am a BIP editor, co-hosted the Unhashed Podcast, founded the Seoul Bitcoin Meetup in 2014, actively co-organizing BitDevs Amsterdam, and on the layer two funding sub-committee of OpenSats.

You can find me on Twitter, Mastodon, and Telegram. You can also join [this Te

This is a work in progress, proceed with caution

Install Proxmox and a Ubuntu VM with Portainer to manage docker containers

Setup Proxmox

Install Proxmox 6.X iso I selected 2 drives in Raid 1 mirror
Console/SSH into Proxmox
nano /etc/apt/sources.list

Lightning dashboards

clightning

NodeMonitor

NodeMonitor is a simple Python Django website that makes calls to Bitcoin (bitcoind) and Lightning Network (c-lightning lightningd) nodes and displays the results on a simple 'dashboard' style status page.

Zabbix clightning

Kinesis Freestyle (Terrible key switches. Mushy and un-lovable)
Kinesis Freestyle Edge (Traditional layout with too many keys, mech switches, proably too big to be tented easily/properly)
Matias Ergo Pro (Looks pretty great. Have not tried.)
ErgoDox Kit (Currently, my everyday keyboard. Can buy pre-assembled on eBay.)
ErgoDox EZ (Prolly the best option for most people.)

OverEncrypt

This is a guide that I wrote to improve the default security of my website https://fortran.io , which has a certificate from LetsEncrypt. I'm choosing to improve HTTPS security and transparency without consideration for legacy browser support.

WARNING: if you mess up settings, lose your certificates, or decide to no longer maintain HTTPS certs, these steps can and will make your domain inaccessible.

I would recommend these steps only if you have a specific need for information security, privacy, and trust with your users, and/or maintain a separate secure.example.com domain which won't mess up your main site. If you've been thinking about hosting a site on Tor, then this might be a good option, too.

The best resources that I've found for explaining these steps are https://https.cio.gov , https://certificate-transparency.org , and https://twitter.com/konklone

FWIW: I (@rondy) am not the creator of the content shared here, which is an excerpt from Edmond Lau's book. I simply copied and pasted it from another location and saved it as a personal note, before it gained popularity on news.ycombinator.com. Unfortunately, I cannot recall the exact origin of the original source, nor was I able to find the author's name, so I am can't provide the appropriate credits.

Effective Engineer - Notes

By Edmond Lau
Highly Recommended 👍
http://www.theeffectiveengineer.com/

	// 1. Open the browser developper console on the network tab
	// 2. Start the video
	// 3. In the dev tab, locate the load of the "master.json" file, copy its full URL
	// 4. Run: node vimeo-downloader.js "<URL>"
	// 5. Combine the m4v and m4a files with mkvmerge

	const fs = require('fs');
	const url = require('url');
	const https = require('https');

	{
	"num_participants": 2,
	"id": "d3e8ef7e-9beb-ac63-2b5f-a8c575d983f0",
	"tx": {
	"inputs": [
	{
	"features": 0,
	"commit": "09597a4ad3118850f31b8033fc6802b3b78b3cd1c8f7eabdc5f650ec21045651ad"
	}
	],