Our Story

Keystone is a security-focused hardware wallet brand developed and operated by Yanssie HK Limited, a company registered in Hong Kong.

Through the Keystone brand, the company designs and provides hardware and software solutions that help individuals securely manage and protect their digital assets.

The Keystone project began in 2018, when a group of security engineers and cryptocurrency enthusiasts set out to build a hardware wallet centered on one core principle: true self-custody. At a time when many users still relied heavily on centralized services, the team believed that individuals should have secure tools that allow them to fully control their private keys.

Since then, Keystone has focused on developing security-first hardware wallets and supporting infrastructure that enable users to interact with blockchain networks safely, transparently, and independently.

Our Mission

Our mission is to empower individuals with secure, open, and reliable self-custody solutions.

Cryptocurrency was created to give people direct ownership of their assets. Keystone aims to support that vision by providing hardware and software solutions that allow users to maintain full control over their digital wealth while minimizing security risks.

Security, transparency, and user sovereignty guide everything we build.

What We Build

Keystone develops hardware wallets and supporting services designed to provide a secure environment for interacting with blockchain networks.

Our hardware wallets allow users to:

• Generate or import recovery phrases (seed phrases) within the device environment
• Derive and manage wallet addresses for supported blockchain networks
• Receive digital asset transfers by providing associated public addresses
• Display and present transaction details for user verification prior to signing
• Sign transaction data using private keys stored within the device
• Export signed transaction data for broadcasting through compatible software wallets
• Protect locally stored information through password protection, pattern locks, or supported biometric authentication mechanisms
• Install firmware updates to maintain device functionality and security features
• Initiate the transaction and sign it with Keystone Nexus

These capabilities allow users to safely manage their cryptocurrency assets while keeping private keys isolated from internet-connected devices.

Non-Custodial by Design

Keystone products operate as non-custodial tools.

This means that:

• We do not store or control your cryptocurrencies
• We do not have access to your private keys
• We cannot initiate transactions on your behalf

All cryptocurrency transactions occur directly on public blockchain networks and are fully controlled by the user.

This design ensures that ownership remains where it belongs — with the user.

Ecosystem Compatibility

Keystone hardware wallets support multiple blockchain networks and integrate with a wide range of Web3 wallet applications. Supported cryptocurrencies and compatible wallets may evolve as the blockchain ecosystem continues to grow.

Our goal is to maintain strong interoperability while preserving the highest standards of security.