Trezor vs Ledger: Why I Use Trezor for My Bitcoin

When I decided to move my Bitcoin off exchanges and into self-custody, the first question I had to answer was: Trezor or Ledger?

Both are hardware wallets. Both keep your private keys offline. Both are widely used and have been around for years. On the surface they look like the same product at similar price points.

I went with Trezor immediately – and not because of the specs. I went with Trezor because it is open source. Once I understood what that meant, there was no real decision to make. Here is the full breakdown.

What a Hardware Wallet Actually Does

Before getting into the comparison, it is worth making sure the concept is clear.

When you own Bitcoin, what you actually own is a private key – a string of characters that proves ownership of coins on the blockchain. Whoever controls the private key controls the Bitcoin. There is no account, no password reset, no customer service line. The key is everything.

When you hold Bitcoin on an exchange, the exchange holds the private keys on your behalf. If the exchange gets hacked, goes bankrupt, or freezes withdrawals, your access depends entirely on their continued operation. FTX had over a million customers who discovered this the hard way in 2022.

A hardware wallet generates and stores your private keys on a physical device that never connects to the internet. When you want to sign a transaction, you confirm on the device screen, and the key never leaves the hardware. That is the whole point.

The question is which hardware wallet to trust with that job.

The Open Source Question – Why It Decided Everything for Me

Trezor is fully open source. Their firmware, their software, their hardware designs – all publicly available for anyone to audit and verify. Independent security researchers can look at exactly how Trezor works and confirm it does what it claims. There are no hidden processes, no closed black boxes, no “trust us.”

Ledger is closed source. Their secure chip uses proprietary firmware that no outside party can audit. When you use a Ledger, you are trusting that the closed chip is doing what Ledger says it is doing. You cannot verify it yourself. You cannot hire someone to verify it for you. You take their word for it.

For most software this is an acceptable tradeoff. For a device whose entire purpose is to protect your private keys, it is not acceptable to me. The whole point of Bitcoin is that you do not have to trust anyone. Using a closed-source wallet to secure it is a contradiction.

The Ledger Data Breach and Recover Controversy

Two events confirmed for me that I made the right call choosing Trezor.

In July 2020, Ledger suffered a major data breach. The personal information of 270,000 customers was exposed – names, email addresses, phone numbers, and physical home addresses. That data was later posted on public hacking forums. Ledger customers received phishing emails, threatening texts, and in some cases physical letters at their home addresses pressuring them to hand over their seed phrases. The breach did not compromise private keys directly, but it put customers in real danger.

Then in 2023, Ledger announced a feature called Ledger Recover – a subscription service that would back up your seed phrase by splitting it into encrypted shards and sending them to three third-party companies. The announcement caused immediate backlash in the Bitcoin community for one reason: it proved that the closed-source firmware on a Ledger device could, through a firmware update, extract your seed phrase and send it somewhere.

That is the risk of closed source. You cannot audit the firmware. You cannot see what a future update might do. With Trezor, any firmware change is publicly visible and reviewed before it ships.

Trezor Safe 7 vs Ledger Stax – Current Flagships Compared

If you are comparing the best each company offers today, it is the Trezor Safe 7 ($249) against the Ledger Stax ($399).

The Ledger Stax has a striking design – a curved E Ink screen, designed by Tony Fadell (the engineer behind the iPod). It looks premium. At $399 it should. But a better-looking device with closed-source firmware is still a closed-source device. You are paying $150 more for something you cannot audit.

What About the Safe 7’s Bitcoin-Only Edition?

Ledger has no equivalent to this. The Trezor Safe 7 Bitcoin-only Edition runs dedicated firmware built exclusively for Bitcoin – no altcoin support, smaller codebase, everything optimized for one purpose. A smaller codebase means a smaller attack surface. If you only hold Bitcoin, there is no reason to have altcoin code running on the device protecting your private keys.

Ledger supports 15,000+ coins and tokens. That is a feature if you hold altcoins. If you only hold Bitcoin, it is unnecessary complexity on a device you are trusting with your most important asset.

Which One Should You Buy?

If you only hold Bitcoin and security is your first priority: Trezor Safe 7 Bitcoin-only Edition. Open source, quantum-ready, auditable secure element, dedicated Bitcoin firmware, $150 cheaper than the Ledger Stax. It is the better device for the job.

If you hold a mix of altcoins and Bitcoin and want a premium-feeling device with a large screen: the Ledger Stax is a capable wallet. The closed-source firmware is a real concern, but millions of people use Ledger without incident. Just understand the tradeoff you are making.

My take: if you care about Bitcoin at the level where you are buying a hardware wallet to secure your private keys, you should also care about being able to verify how that wallet works. That is what open source gives you. That is why I chose Trezor and why I am staying with Trezor.