Is Phantom wallet open source?

Phantom Wallet, a popular Solana-based crypto wallet, is not fully open source, though it shares some tools and SDKs publicly.

Jul 03, 2025 at 12:29 am

What is Phantom Wallet?

Phantom wallet is a non-custodial cryptocurrency wallet primarily designed for the Solana blockchain. It allows users to store, send, receive, and interact with decentralized applications (dApps) on the Solana network. The wallet is available as a browser extension and mobile application, offering a seamless experience for both beginners and advanced users in the crypto space.

One of the key features that users often consider when choosing a wallet is whether it is open source or closed source, as this can impact transparency, security, and trustworthiness. This leads to the central question: Is Phantom wallet open source?

Understanding Open Source Software in Cryptocurrency

In the context of cryptocurrency wallets, being open source means that the source code is publicly accessible, allowing anyone to inspect, audit, modify, and redistribute it. This promotes transparency and community involvement, especially when it comes to security audits and identifying potential vulnerabilities.

For many users, especially developers and advanced crypto enthusiasts, using an open-source wallet provides an extra layer of confidence. It ensures that the wallet isn't hiding malicious code or backdoors that could compromise user funds. However, not all wallets choose to go down this path, and some prefer to keep their code proprietary for various reasons such as business strategy, intellectual property protection, or security through obscurity.

Is Phantom Wallet Open Source?

As of the latest information available up to July 2024, Phantom wallet is not fully open source. While the company behind Phantom has shared certain components and tools related to its infrastructure, the core wallet code remains closed. This includes the main logic of the wallet extension and mobile app that handles private keys, transaction signing, and dApp interactions.

This decision has sparked discussions within the Solana and broader crypto communities. Some users appreciate Phantom’s focus on user experience and design, while others remain skeptical due to the lack of full transparency. Phantom has stated that they prioritize security and usability, and that keeping the code closed helps prevent bad actors from reverse-engineering the wallet for malicious purposes.

What Code Does Phantom Share Publicly?

Although Phantom's core wallet code is not open source, the team does maintain several repositories on GitHub related to their ecosystem. These include:

• Frontend components: Certain UI libraries and frontend tools are available for developers to use.
• SDKs and integrations: Phantom provides SDKs for developers who want to integrate the wallet into their dApps.
• Documentation and APIs: Developers can access detailed documentation and API references to interact with the wallet programmatically.

These resources allow developers to build on top of Phantom’s infrastructure without needing access to the wallet’s internal logic. However, this partial openness does not equate to full transparency, which is why some in the community continue to push for more visibility into how the wallet operates under the hood.

Comparing Phantom With Other Wallets

To better understand Phantom’s position, it’s useful to compare it with other popular wallets in the crypto ecosystem:

• MetaMask (Ethereum): MetaMask is partially open source. While the frontend code is public, the backend and certain components are proprietary.
• Trust Wallet (Binance): Trust Wallet was originally open source but after being acquired by Binance, parts of the codebase became closed.
• Electrum (Bitcoin): Electrum is fully open source and widely trusted among Bitcoin users for its transparency.
• Solflare (Solana): Solflare is another wallet for Solana, and unlike Phantom, it offers full transparency with open-source code.

Each wallet takes a different approach to openness, balancing factors like security, business model, and user expectations. Phantom falls into the category of wallets that offer partial openness but retain control over the core code.

How to Verify Phantom’s Security Claims?

Since the wallet isn’t fully open source, users must rely on alternative methods to verify Phantom’s security claims:

• Third-party audits: Phantom has undergone multiple third-party security audits by reputable firms. These reports are sometimes shared publicly or summarized in blog posts.
• Security certifications: Look for industry-standard certifications or partnerships that indicate a level of trust in the wallet’s infrastructure.
• Community feedback: Engage with Solana and Phantom communities on platforms like Discord, Reddit, and Twitter to gather insights from experienced users.
• Bug bounty programs: Phantom runs a bug bounty program via platforms like Immunefi, encouraging ethical hackers to find and report vulnerabilities.

While these measures don’t replace full code transparency, they do provide additional layers of assurance regarding the wallet’s reliability and commitment to security.

Frequently Asked Questions (FAQ)

Q: Can I view any part of Phantom’s source code?

A: Yes, Phantom shares certain frontend tools, SDKs, and integration libraries on GitHub. However, the core wallet logic remains closed.

Q: Why doesn’t Phantom make its wallet fully open source?

A: According to Phantom, keeping the code closed helps protect against potential exploits and maintains a consistent user experience across platforms. They also cite proprietary technology and security concerns as reasons.

Q: Is there an open-source alternative to Phantom for Solana?

A: Yes, Solflare is a popular open-source wallet for the Solana blockchain and is often used by users who prefer full transparency.

Q: How can I ensure my funds are safe in Phantom if the code isn’t open?

A: You can review publicly available audit reports, participate in the bug bounty program, follow community discussions, and ensure you're using the official version of the wallet from trusted sources like the Chrome Web Store or Phantom’s official website.