OneKey: The Best Bitcoin-Only Hardware Wallet

A Bitcoin-Only hardware wallet refers to a device that supports Bitcoin exclusively at the firmware level. It does not need to interpret transaction formats from other chains. Every part of the design focuses on Bitcoin key generation, storage, and signing. Once a hardware wallet is switched to Bitcoin-Only firmware, the interface shows a single network and a single asset: Bitcoin.

For users who only hold Bitcoin, a device that understands one asset and one set of rules is easier to keep clear and under control over time.

The goal is simple and focused.
Serve Bitcoin self custody, and nothing else.

OneKey’s Bitcoin-Only firmware is built around this principle.

Clear and Readable Bitcoin Transaction Signing

OneKey’s Bitcoin-Only firmware fully supports readable Bitcoin transaction confirmation. Inputs, outputs, amounts, and fees are displayed clearly on the device screen. What you see on the device is exactly what gets signed and broadcast to the network.

This “what you see is what you sign” experience helps users catch abnormal transaction structures, address substitutions, or hidden traps before approving a transaction.

Designed for Long-Term Self Custody

Bitcoin is usually held in years, not weeks.

A hardware wallet built for Bitcoin should reflect that time horizon. OneKey’s Bitcoin-Only firmware prioritizes stability and long-term reliability, with a conservative update cadence and a strong focus on compatibility and consistent behavior.

This makes it well suited for cold storage, multisig setups, and asset management scenarios that require long-term security planning.

When the goal is to preserve value across cycles, simplicity becomes a real advantage.

Open Source and Verifiable

What matters most to users is verifiability, not brand promises.

OneKey firmware, including the Bitcoin-Only version, is fully open source. Anyone can review the code, reproduce the build, and verify that the firmware running on the device matches the public release.

This transparency enables continuous review by security researchers and the community, and aligns closely with the security expectations of Bitcoin users.

Switching to Bitcoin-Only Firmware

Switching to Bitcoin-Only firmware is straightforward.

The video walks through the full process, including backup considerations, firmware installation, and post-installation verification. The process does not compromise device security, and switching back is possible if needed.

Who Should Use Bitcoin-Only Firmware

Bitcoin-Only firmware is well suited for users who primarily hold Bitcoin, multisig users, and long-term holders who want to minimize attack surface. For those who see a hardware wallet as a security tool rather than a multi-purpose interface, this approach is clearer and easier to use consistently.

If your goal is to hold Bitcoin with maximum clarity and control, OneKey hardware wallets remain a reliable choice.