To become a Bitcoin developer, you'll need a combination of technical skills, blockchain knowledge, and specific programming expertise.

Here's a comprehensive breakdown:

1. Programming Languages

- Strong proficiency in C++: Bitcoin's core protocol is primarily written in C++

- Python: Useful for scripting, testing, and blockchain-related tools

- JavaScript: Essential for web-based Bitcoin applications

2. Blockchain and Cryptography Fundamentals

- Deep understanding of blockchain technology

- Cryptographic principles (public/private key cryptography)

- Hash functions

- Digital signatures

- Consensus mechanisms

- Distributed systems architecture

3. Technical Skills

- Understanding of Bitcoin protocol and network structure

- Bitcoin Core development

- Bitcoin script programming

- Bitcoin wallet development

- API integration

- Understanding of Lightning Network

- Knowledge of Bitcoin Improvement Proposals (BIPs)

4. Development Tools and Environments

- Git version control

- GitHub collaboration

- Linux command-line proficiency

- Docker containers

- Continuous Integration/Continuous Deployment (CI/CD) practices

5. Soft Skills

- Strong problem-solving abilities

- Ability to work in open-source collaborative environments

- Continuous learning mindset

- Understanding of cryptocurrency economics

- Security-focused thinking

6. Recommended Learning Resources

- Bitcoin Core GitHub repository

- Bitcoin developer documentation

- Online courses on blockchain development

- Bitcoin GitHub community

7. Optional but Beneficial

- Rust programming language

- Understanding of other cryptocurrencies

- Network security principles

- Financial technology background

Practical experience through personal projects, contributing to open-source Bitcoin projects, and staying updated with the latest blockchain technologies will significantly enhance your prospects as a Bitcoin developer.