Keystone hardware wallet
Air-gapped open-source hardware wallet that signs over QR codes and works with MetaMask and other wallets.
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Keystone key facts
| Category | Hardware wallet |
|---|---|
| Chains | Bitcoin, Ethereum and 5,500+ assets |
| Platforms | Hardware |
| Custody | Self-custody |
| Pricing | Keystone 3 Pro: $149 |
| Chains | 5,500+ assets; 45+ software wallets |
| Open source | Yes, firmware on GitHub |
What is Keystone?
Keystone is an air-gapped hardware wallet with no USB data, Bluetooth, Wi-Fi or NFC; it signs through QR codes. The Keystone 3 Pro lists at $149, has a 4-inch touchscreen and three secure element chips, and its firmware is public on GitHub. It connects to 45+ software wallets such as MetaMask.
Keystone alternatives
Other projects people compare with Keystone.
Hardware wallets (Nano, Flex, Stax) from French company Ledger SAS, used with the Ledger Wallet app.
Open-source hardware wallets from Trezor Company s.r.o., part of SatoshiLabs Group, sold since 2013.
Hardware wallets (S1, X1, S1 Pro) plus a free self-custody mobile wallet app.
Card-shaped NFC cold wallet from Swiss company Tangem AG, used by tapping a phone.
Card-shaped cold storage wallet that signs transactions with a tap on an NFC phone.
Hardware wallet line with a fingerprint-based model and a companion mobile app.
Keystone pros and cons
- Keystone 3 Pro lists at $149
- Firmware public on GitHub
- Works with 45+ software wallets, per its site
- Day-to-day use runs through a third-party software wallet
- QR signing adds steps compared with a cable
- Longer coverage plans raise the price to $199 or $249
Keystone FAQ
What is Keystone?
Keystone is an air-gapped hardware wallet with no USB data, Bluetooth, Wi-Fi or NFC; it signs through QR codes. The Keystone 3 Pro lists at $149, has a 4-inch touchscreen and three secure element chips, and its firmware is public on GitHub. It connects to 45+ software wallets such as MetaMask.
Which chains does Keystone support?
Bitcoin, Ethereum and 5,500+ assets.
How much does Keystone cost?
Keystone 3 Pro: $149, according to Keystone’s own page (checked Sep 26, 2026).
Does Keystone hold my funds?
No. Keystone is self-custody: you keep your funds in your own wallet and sign each transaction.
Sources
How this page works
Sources: Keystone: official site, Keystone Shop: Keystone 3 Pro, Keystone: Homepage. Data as of Sep 26, 2026.
Not affiliated with any project listed. Educational content, not financial advice.