Bitcoin Cash needs to have fast, cheap, reliable transactions. This reliability depends on zero-confirmation (“0-conf”) transactions working consistently. And so far, it does. This is because miners and mining pools are consistently applying the same policies for transactions. Recently, the leaders of Bitcoin Unlimited have informally proposed the idea of…

So far, Bitcoin has proven to be a bit tricky. Bitcoin was created in 2009, but by 2015, a problem emerged: The Bitcoin Core developers could not agree on raising the maximum blocksize limit — a necessary step to allow the network to grow. In 2017, a portion of the…

Last week, at a Bitcoin Cash conference, I was introduced to a groundbreaking new paradigm in software development, called Emergent Coding. Not just a new programming methodology — this is quite possibly the most radical software breakthrough to appear in decades. …

How do we grow adoption so that Bitcoin Cash becomes peer-to-peer electronic cash for the world? Returning recently from the BitcoinCashCity conference, I am inspired. Retail adoption of crypto payments actually manifesting in real life is quite something to behold. A dream come true for any true Bitcoiner. But the…

Everyone would like to convince you that their favorite coin is the best, so I understand if there’s some healthy skepticism here. Perhaps I am just as biased as the next person, so I encourage you to do your own research and think critically. I would like to explain why…

Dear Unwriter, I am disappointed to see that you are leaving the Bitcoin Cash community. You are a talented developer. I’ve enjoyed working with you and appreciate your contributions to the Simple Ledger Protocol and other projects we worked together on. It is of course your decision to make, but…

There’s an interesting web page called “Bitcoin Obituaries” which says that Bitcoin has died 323 times. The idea is that each time someone claims Bitcoin is dead, its actually just a minor bump in the road, and everything is fine. By my count, Bitcoin has died just twice, but each…

In Part 1 of this series we took a look at challenges to overcome, and in Part 2, I suggested a simple time-based penalty scheme. It turns out I am not the only one who has been thinking a lot about this problem. …

In Part 1, we discussed the problem of the 51% attack, and why it is difficult to solve. Here I would like to present a possible solution. (Disclaimer: I have not spent much time analyzing this, so maybe there is some big obvious flaw.) This solution is extremely simple. The…