Jimmy Song

How to Stay Safe with Bitcoin

Originally published here.

Segwit2x Bugs Explained

The Segwit2x hard fork was called off a little over a week ago in an email post to the 2x mailing list. Several parties threatened to split the network anyway, and we eagerly waited for block 494784 to see whether someone would mine the 2x hard fork or not.

How to Protect Against Replay Attacks

Jeff Garzik recently reverted opt-in replay protection on the btc1 GitHub. This is causing some anxiety as many believe this lack of replay protection will cause all sorts of horrible things on the network.

Bitcoin Gold: What you need to know

There’s a Bitcoin hard fork around the corner and it’s not 2x. Announced right before Bitcoin Cash forked, Bitcoin Gold is scheduled to go live sometime in November. In this article, I’m going to explain what Bitcoin Gold is, how and when it will hard fork and what…

How Segwit2x Replay Protection Works

Note: This replay protection scheme has since been reverted! Please make sure you DO NOT use the protection scheme from this article for anything as you WILL NOT be protected before or after the 2x hard fork.

Atomic Swaps

Decred and Litecoin completed something called a cross-chain atomic swap a few days ago. They published a blog about it, created a GitHub repo with utilities and talked about it on my show.

In this article, I’m going to explain what atomic swaps are, how this affects Bitcoin and…

Mining BTC/BCH: Past, Present and Future

Many miners are clearly moving back and forth between Bitcoin and Bitcoin Cash in an attempt to maximize profits. What’s going on and why is this happening? In this article, I examine what miners have been doing on each chain and what their motivations might…

Replay Attacks Explained

Segwit2x has garnered some controversy over the fact that it will not have replay protection. In this article, I’m going to explain what a replay attack is and how it will affect the upcoming 2x hard fork.

Bitcoin Transactions

Transaction Malleability Explained

One of the benefits of SegWit, scheduled to activate on the network very soon, is that it fixes something called transaction malleability. In this article, I’m going to explain what malleability is and why fixing it is important.

Bitcoin Tech Talk Mission

Authored with John Newbery

Keeping up with Bitcoin is exhausting. Most sources out there are either untechnical, inaccessible or partisan. It’s hard to know which details are accurate or inaccurate, partial or whole, FUD or actually something to worry about.