Skip to main content

Search...

Popular searches

Keystone

Keystone is a brand of air-gapped hardware wallets, such as the Keystone Pro, that securely store cryptocurrency private keys offline.

Hardware
Updated: Mar 19, 2026
Also known as: Keystone wallet Keystone Pro

What Is a Keystone?

A Keystone is a brand of air-gapped hardware wallets, such as the Keystone Pro and Keystone Essential, that securely store cryptocurrency private keys offline. Also known as Keystone wallet, it isolates keys from internet-connected devices to prevent hacks.

Keystone wallets generate private keys inside a secure chip. Users manage funds through a large color touchscreen. For transactions, a companion app displays a QR code on a phone or computer. The Keystone camera scans it, signs the transaction offline, and shows a new QR code for the app to broadcast. This QR-based air-gapping avoids USB, Bluetooth, or Wi-Fi risks.

Keystone matters for high-security crypto storage. It protects against remote malware, phishing, and online exploits that target software wallets. Users regain full control over keys, reducing reliance on exchanges prone to breaches.

Key characteristics include open-source firmware for verification, support for over 1,000 coins and NFTs, multisig setups for added safety, and features like fingerprint authentication on Pro models. Backups use mnemonic seeds following BIP-39 standards.

GeneralCryptocurrency

Cryptocurrency is a digital or virtual currency secured by cryptography, operating on decentralized blockchain networks to enable secure, peer-to-peer transactions.

Read full definition
WalletCompanion App

A companion app is a software application used to manage and interact with cryptocurrency wallets or blockchain networks, typically offering features like transactions and security controls.

Read full definition
WalletCrypto Storage

Crypto Storage refers to secure methods for holding cryptocurrencies, such as wallets and hardware devices that protect private keys from unauthorized access.

Read full definition
TransactionMultisig

Multisig (multi-signature) is a security feature that requires multiple private keys to authorize a transaction, enhancing protection against unauthorized access in blockchain networks.

Read full definition
BlockchainBIP39

BIP39 is a standard for generating mnemonic seed phrases that are used to create deterministic wallets and securely back up cryptocurrency private keys.

Read full definition

Real-World Examples

Example 1: Alice buys Bitcoin on an exchange. She transfers it to her Keystone Pro wallet address for offline storage. The Keystone generates the address on its touchscreen. This keeps her private keys safe from exchange hacks.

Example 2: Bob wants to send Ethereum from his Keystone Essential. He opens the companion app on his phone. The app shows a QR code for the unsigned transaction. Bob scans it with the Keystone camera, signs offline, and scans the signed QR back to broadcast.

Example 3: Carlos sets up multisig with two Keystone devices and a software wallet. Each Keystone holds one key. Transactions require signatures from all devices via QR codes. This adds security for large holdings.

Example 4: Dana loses her Keystone Pro. She recovers funds using her BIP-39 mnemonic seed on a new device. The Keystone restores all wallets securely without exposing the seed online.

BlockchainBitcoin

Bitcoin (BTC) is the first decentralized cryptocurrency, launched in 2009. It uses blockchain technology for secure, peer-to-peer digital transactions without intermediaries.

Read full definition
DefiSwap

In cryptocurrency, a swap is the direct exchange of one token for another on a blockchain, often via decentralized exchanges (DEXs) without intermediaries.

Read full definition
WalletCold Storage

Cold storage refers to keeping cryptocurrency private keys offline, away from the internet, to protect them from hacks or unauthorized access.

Read full definition
BlockchainEthereum

Ethereum is a decentralized blockchain platform that enables smart contracts and decentralized applications (dApps). Its native cryptocurrency is Ether (ETH).

Read full definition
WalletCompanion App

A companion app is a software application used to manage and interact with cryptocurrency wallets or blockchain networks, typically offering features like transactions and security controls.

Read full definition
TransactionMultisig

Multisig (multi-signature) is a security feature that requires multiple private keys to authorize a transaction, enhancing protection against unauthorized access in blockchain networks.

Read full definition
WalletHot Wallet

A Hot Wallet is a cryptocurrency wallet connected to the internet, allowing for easy access and transactions but more vulnerable to hacks.

Read full definition
BlockchainBIP39

BIP39 is a standard for generating mnemonic seed phrases that are used to create deterministic wallets and securely back up cryptocurrency private keys.

Read full definition
BlockchainMnemonic Phrase

A mnemonic phrase is a set of words that stores a cryptocurrency wallet's private keys, allowing users to recover access if lost.

Read full definition

Ready to Choose a Secure Wallet?

Use our tools to find the right hardware wallet for your needs.