Keystone
Air-gapped hardware wallet with a large touchscreen — pairs to MetaMask / Sparrow via QR.
| Type | Hardware wallet |
|---|---|
| Custody | Self-custody — the user holds the keys |
| Platforms | iOS, Android |
| Open source | Yes — source code |
| Multisig | Yes |
| Account / KYC | No identity verification |
| Official site | keyst.one |
Cryptocurrencies it holds
Token networks
Holds tokens issued on Ethereum, BNB Smart Chain, Polygon, Arbitrum, OP Mainnet, Base, Avalanche, Solana, TRON, TON, XRP Ledger, NEAR, Aptos, Sui and Cosmos Hub.
Features
Security record
No user funds lost through a fault of the maker's, on record as of 13 October 2026.
No customer-data leak on record as of 13 October 2026.
Only the maker's own failures count; phishing and lab attacks that need the stolen device do not. Every wallet compared: Crypto wallet hacks, and the wallets that were never hacked.
Questions
Has Keystone been hacked?
No user funds have been lost through a fault of Keystone's maker, on record as of 13 October 2026. No customer data has leaked either.
Which coins does Keystone support?
Bitcoin, Bitcoin Cash, Ethereum, Litecoin, Dogecoin, XRP, Cardano, Solana, Monero, TRON, Polkadot, Cosmos Hub, Zcash and Dash, plus tokens on Ethereum, BNB Smart Chain, Polygon, Arbitrum, OP Mainnet, Base, Avalanche and Solana and other networks.
Is Keystone open source?
Yes. Its source code is public at https://github.com/KeystoneHQ.
Does Keystone support multisig?
Yes. Keystone can hold one key of a multi-signature wallet, where several keys on separate devices are needed to move funds — the setup that survives any single wallet failing.
Is Keystone custodial?
No. Keystone is self-custody: the user holds the keys, and nobody else can move the funds.
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