bitcoin - derp turkey

Inherent Malleability of ECDSA Signatures

In ECDSA, inherent signature malleability is a byproduct of the structure we use to verify a digital signature. It allows anyone to modify the signature in a specific way without access to the private key and yet the signature remains perfectly valid! We can

lightning network

Lightning Network Routing Gossip: Introduction

This is a different kind of article about the Lightning Network. Many articles discuss the mechanism of channels. However, nodes in the network perform two primary functions: creating channels and gossiping information. This series of articles is going to address the less talked about

bitcoin

Merkle Tree Construction and Proof-of-Inclusion

Trees are one of my favorite concepts. It's amazing how much of the real world can be mapped to trees and graphs. One interesting types of tree and the subject of this article is called a Merkle tree. Merkle trees are used in Bitcoin

bitcoin

Bitcoin P2PKH Transaction Building with Node.js

This post discusses the mechanics of transaction building for Pays to PubKey Hash (P2PKH) transactions. P2PKH transactions are a standard format to pay to Bitcoin addresses. If you are unfamiliar with this type of transaction, I recommend reading through the transaction section of the

bitcoin

Verify Bitcoin client download with gpg

This guide will walk you through verifying the bitcoin client binaries after downloading them from http://bitcoin.org. At a high level, you will download the gzipped binaries and a checksum file. You confirm that the checksum file is the legitimate checksum by verifying