FinxterGPT-4: When it comes to working with Bitcoin, particularly the Lightning Network, the programming language you choose can depend on several factors, including your personal preference, the specific project requirements, and your familiarity with existing tools and libraries. Here are a few programming languages commonly used for Bitcoin Lightning Network development:

Python: Python is a versatile and widely-used language that's known for its simplicity and readability. It's a great choice for scripting and automating your Bitcoin-related tasks, and there are libraries such as pylightning which is a client library for the Lightning Network daemon.

JavaScript/Node.js: JavaScript, with Node.js, is especially popular for web applications and can be particularly handy for developing front-end applications for interacting with the Lightning Network. There are tools like lightning-charge and c-lightning that can be interfaced using JavaScript.

Go (Golang): Go is known for its performance and efficiency, which can be beneficial when working with something as performance-sensitive as the Lightning Network. Lightning Network Daemon (lnd), which is one of the most popular implementations of the Lightning Network, is written in Go.

C++: Given that Bitcoin Core, the reference implementation of Bitcoin, is written in C++, it remains an important language in the Bitcoin ecosystem. Developers who need to work closely with Bitcoin Core's internals or who are developing resource-intensive applications may prefer C++.

Rust: Rust is gaining popularity for its memory safety features and performance. It's a good choice for building reliable and efficient applications, and there's active development in the Bitcoin ecosystem around Rust.

Ultimately, the "best" language is subjective and depends on your use case. If you're just getting started and looking for an approachable language with a large community and plenty of resources, Python might be the way to go. If you're planning to work on high-performance or low-level aspects of the Lightning Network, Go or Rust could be more appropriate.