Keystone

Air-gapped hardware wallet that signs by scanning QR codes, with no USB, Bluetooth or network connection.

You hold the keys
Visit Keystone → All hardware wallets

Opens keyst.one in a new tab.

The listing at a glance

  • You hold the keysYour coins stay under your control. Keystone never holds them.
  • keyst.oneThe address our listing links to.
  • No commercial linkWe earn nothing if you sign up.
  • Founded 2018
  • Updated 30 Sep 2026The last time we edited this listing.

What Keystone is

Keystone makes an open source, air-gapped hardware wallet for storing cryptocurrency private keys offline. The device uses a 4-inch touchscreen display, PCI-grade tamper-resistant chips, and has no network connectivity, signing transactions offline to avoid exposure to online threats. It connects with software wallets such as MetaMask and OKX Wallet, and supports major cryptocurrencies including Bitcoin and Ethereum, with a Bitcoin-only firmware option also available.

The wallet generates a seed phrase during setup, which customers back up offline; funds can be restored on a new Keystone device or any BIP39-compatible wallet using that seed phrase. Keystone also sells physical accessories, including steel plates for mnemonic backup and a Keystone Tablet for offline storage of recovery phrases.

Good for, and what to watch

Good for

  • Air-gapped: signs through QR codes, with no USB or Bluetooth
  • Open-source firmware
  • A large touchscreen makes addresses easy to check
  • Works with MetaMask, Sparrow and many other wallets

Watch out for

  • It signs through a software wallet, so your setup is only as safe as that app
  • The multi-coin firmware is a much larger codebase than a Bitcoin-only one
  • Firmware updates come by microSD — take them only from the official site
  • Buy direct, never from a marketplace

Before you go

Make sure it is really Keystone

Lookalike sites copy crypto companies to take people’s coins. Paste any link that claims to be Keystone and we will tell you whether it is the official site, or only resembles it. We do not keep what you paste.

  1. 1
    Go from here, or type itkeyst.one is the address in our listing. Bookmark it rather than following an ad or a message.
  2. 2
    Check any other linkSearch says whose official site a link is, and warns when one resembles a site we know.
  3. 3
    Never share your recovery phraseNo real company asks for it: not support, not an update, not a “verification”.

This listing is our own opinion. We are not affiliated with Keystone beyond any commercial relationship disclosed above, we never take custody of your assets, and nothing here is financial advice. Verify anything that matters against the company's own site before acting on it.