No official phone numbers are published by Keystone. All communications are through email and social channels.
Keystone, previously known as Cobo Vault, is a hardware wallet company focused on secure and air-gapped cryptocurrency storage. Keystone wallets allow users to store Bitcoin, Ethereum, and thousands of other cryptocurrencies offline, protecting funds from hacks, malware, and phishing attacks. The platform emphasizes military-grade security, offline transaction signing, and multi-chain support, making it suitable for both retail investors and institutional users.
Founded: 2018 (as Cobo Vault), rebranded to Keystone in 2022
Headquarters: Singapore
Core product: Keystone hardware wallets (air-gapped devices)
Supported assets: Bitcoin, Ethereum, ERC-20 tokens, and 1000+ cryptocurrencies
Security: Offline signing, secure element, air-gapped design, QR code communication, PIN protection
Software: Keystone App for mobile and desktop to manage wallets and transactions
User experience: Easy-to-use interface while maintaining maximum security
Compliance: GDPR-compliant and follows international security standards
Target audience: Crypto investors, traders, and institutions needing high-security wallets