Talk: How to Double Spend, Project: Crypto-Lightning ATM

This week will be a short talk about how to double-spend in Bitcoin. We will discuss the technical details behind double-spending, how practical it is, and how to mitigate the risk of double-spend attacks.

After the talk we will research and hack on our latest project: A Cryptocurrency-to-Lightning ATM. We will start with a simple proof-of-concept (script or web page) to show that it is possible. Resources for this project:

• https://bitcoin.org/en/
• https://dev.lightning.community/overview/

---

SPEAKER:
Charles is a cryptocurrency enthusiast, programmer, and entrepreneur. He has many years of professional experience developing mobile and web applications while working for start-ups in Europe as well as the United States. He is a long-time open-source contributor and for the past year he has been working full-time developing cryptocurrency payment systems.