Trezor shipped its first hardware wallet twelve years ago this week, marking a milestone in the push for self-custody. Yet despite the availability of such tools, more people than ever are relying on third-party custody for their Bitcoin. The result: most people who think they hold Bitcoin actually hold a claim on it, not the actual coins.
Ownership vs. Claim
There's a difference between owning Bitcoin and owning a claim on Bitcoin. When you use a third-party custodian — an exchange, a bank, an ETF provider — you don't control the private keys. The Bitcoin sits in a pooled wallet or an omnibus account. You can't move it without the custodian's permission. That's not ownership in the cryptographic sense. It's an IOU.
Most people who think they hold Bitcoin actually hold a claim. They have a balance on a screen, but the underlying coins are under someone else's control. That distinction matters when the custodian freezes withdrawals, gets hacked, or goes under.
Why Custody Is Growing
More people than ever are using third-party custody for their Bitcoin. The trend has accelerated even as self-custody tools like Trezor have become easier to use. Convenience plays a role — not everyone wants to manage seed phrases and firmware updates. Institutional money, which often requires regulated custodians, has also poured in. But the result is a growing gap between the number of people who say they own Bitcoin and the number who actually control it.
The Trezor Legacy
Trezor's first hardware wallet, released in 2014, helped popularize the idea that users could hold their own keys. Twelve years later, the company continues to produce devices, but the industry has shifted toward custodial solutions. The original promise of Bitcoin — "be your own bank" — has taken a back seat to the ease of letting someone else handle the keys.
The gap between owning Bitcoin and owning a claim on Bitcoin remains a central tension in the ecosystem. As more capital flows into custodial products, the question of who truly controls the coins becomes harder to ignore.
