RobinLinus

Raw Bitcoin Transactions

P2PK

https://blockstream.info/block/00000000d1145790a8694403d4063f323d499e655c83426834d4ce2f8dd4a2ee

Raw

https://blockstream.info/tx/f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16

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

Parsed

Kixunil

Reusable taproot addresses

Abstract

This document proposes a new scheme to avoid address reuse while retaining some of the convenience of address reuse, keeping recoverability purely from Bitcoin time chain and avoiding visible fingerprint. The scheme has negligible average overhead.

Motivation

ityonemo

A half-hour to learn Zig

This is inspired by https://fasterthanli.me/blog/2020/a-half-hour-to-learn-rust/

Basics

the command zig run my_code.zig will compile and immediately run your Zig program. Each of these cells contains a zig program that you can try to run (some of them contain compile-time errors that you can comment out to play with)

elichai

Q: Pathway wise is this even possible to have a parallel Rust thing going at the same time?
A: Yes, Rust is a compiled non-gc languange just like C++, Rust can call easily call into C functions and easily expose a C API (Rust can also do this with C++ but less "easily").

Q: At the same time there are a lot of big companies making that same bet... I wish I had more examples than that but I don’t off the top of my head
A:

1. Google is actively using Rust in multiple projects: Fuchsia[[0]] CrosVM(part of Chromium OS)[[1]], and probably more[[2]][[3]]
2. Microsoft, it was already said but microsoft is using Rust in Windows[[4]], wasm related tools[[5]], and more[[6]] they also have people whose all job is making rust+windows experience better[[7]]
3. Facebook is both experimenting with rust[[8]][[9]] and using it in production[[10]]
4. Dropbox main sync engine is written in Rust[[11]].

LukeMathWalker

name: Security audit
on:
  schedule:
    - cron: '0 0 * * *'
  push:
    paths:
      - '**/Cargo.toml'
      - '**/Cargo.lock'
jobs:
  security_audit:

chris-belcher

Design for a CoinSwap Implementation for Massively Improving Bitcoin Privacy and Fungibility

25/5/2020

Abstract

Imagine a future where a user Alice has bitcoins and wants to send them with maximal privacy, so she creates a special kind of transaction. For anyone looking at the blockchain her transaction appears completely normal with her coins seemingly going from address A to address B. But in reality her coins end up in address Z which is entirely unconnected to either A or B.

Now imagine another user, Carol, who isn't too bothered by privacy and sends her bitcoin using a regular wallet which exists today. But because Carol's transaction looks exactly the same as Alice's, anybody analyzing the blockchain must now deal with the possibility that Carol's transaction actually sent her coins to a totally unconnected address. So Carol's privacy is improved even though she didn't change her behaviour, and perhaps had never even heard of this software.

kallewoof

Signet

This is a description of how to get started with Signet. This document assumes you are capable of using git, and that you are able to compile Bitcoin. (If you have not yet done so, you should begin by doing that now.)

Fetch and compile signet

$ git clone https://github.com/kallewoof/bitcoin.git signet
$ cd signet
$ git checkout 2003-signet-consensus

achow101

Using Bitcoin Core with Hardware Wallets

This approach is fairly manual, requires the command line, and requires a patched version of Bitcoin Core.

Note: For this guide, code lines prefixed with $ means that the command is typed in the terminal. Lines without $ are output of the commands.

Disclaimer

I am not liable for any coins that may be lost through this method. The software mentioned may have bugs. Use at your own risk.

Kelbie

Links Twitter and Mastodon accounts in the Bitcoin(/CryptoCurrency) ecosystem.

If there are any mistakes let me know immediately please.

Twitter	Mastodon	Proof
@KevinKelbie	https://mastodon.social/@kelbie	https://twitter.com/KevinKelbie/status/1027713425336623104
@lopp	https://mastodon.social/@lopp	https://twitter.com/lopp/status/1026898486053232640
@notsofast	https://mastodon.host/@notsofast	https://twitter.com/notsofast/status/1027299777959157760
@stacyherbert	https://bitcoinhackers.org/@StacyH	https://twitter.com/stacyherbert/status/1028059823865319426
@starkness	https://bitcoinhackers.org/@stark	https://twitter.com/starkness/status/1028119135107067905

Stadicus

E-Commerce c-lightning node on Digital Ocean

Prerequisites

• based on small Digital Ocean VPS (1CPU / 1GB RAM) with Ubuntu 16.04
• SSH keys are recommended, but not described here
• (sub) domain name necessary for SSL certificate

UFW & basic stuff

Login as "root"