Blockstream Jade Plus

Blockstream Jade Plus is a self-custody hardware wallet built for securing Bitcoin and Liquid assets. Developed by Blockstream, Jade Plus is designed to keep private keys offline while enabling transaction signing through multiple connection modes, including fully air-gapped QR workflows. The device is positioned for users who want an open-source hardware wallet with flexible connectivity, on-device verification, and optional setups that can prioritize offline operation.

Overview

Jade Plus follows the standard hardware wallet model: transactions are constructed in companion software and then verified and approved on the device. The wallet supports communication methods that can be used depending on the user’s threat model and day-to-day preferences. For users prioritizing isolation, Jade Plus supports camera-based QR signing so that transaction data can move between the device and the companion wallet without a wired data connection. For convenience, it also supports USB-C and Bluetooth connectivity for pairing with supported apps and desktop wallets.

History and Background

Jade Plus is part of Blockstream’s Jade hardware wallet lineup, which is focused on Bitcoin-first self-custody and Liquid support. The Jade line has been promoted as open-source hardware intended to provide verifiable security properties, with an emphasis on reducing reliance on opaque components. Jade Plus is positioned as a higher-end model within the product family, offering updated hardware characteristics and expanded interaction options compared with earlier Jade devices.

Core Products and Services

• Hardware signing for Bitcoin and Liquid: Offline key storage and on-device approvals for supported transactions.
• Companion app integration: Designed to work with Blockstream’s wallet app on mobile and desktop for portfolio and transaction workflows.
• Third-party wallet compatibility: Compatibility is commonly described for Bitcoin desktop wallets and tooling such as Electrum, Sparrow Wallet, and HWI-based integrations, depending on user setup.
• Air-gapped options: QR-based signing for users who prefer camera-based data transfer rather than persistent connectivity.

Technology and Features

Jade Plus is described as an open-source hardware wallet and is built to support multiple communication modes: USB-C for wired connections, Bluetooth for mobile pairing, and a built-in camera for QR-code workflows. The QR mode is central to an “air-gapped” operating style, where users can physically control when the device receives or transmits transaction data by scanning and displaying QR codes. In addition to QR signing, Jade Plus can support offline interactions through removable media workflows described for the Jade line, including options used for air-gapped firmware upgrades.

Blockstream’s Jade security model is commonly described in terms of a “virtual secure element,” where the device is designed to remain open-source while limiting certain physical extraction risks through its PIN and key-handling design. Like other hardware wallets, Jade Plus relies on on-device confirmation to reduce the chance that malware on a connected phone or computer can silently redirect funds. The practical security outcome still depends on the user carefully verifying recipient addresses and amounts on the hardware wallet before approving a transaction.

Jade Plus also supports Bitcoin multisig workflows through compatible software. Multi-signature setups can reduce single-device risk by requiring approvals from multiple signing devices to move funds, but they also increase operational complexity around backups, coordinator choice, and recovery planning.

Technical Specifications

• Dimensions: 65 mm × 30 mm × 12 mm
• Weight: Approximately 25 g for the classic black variant and about 30 g for metal variants
• Controls: Physical buttons for navigation and confirmation
• Battery: 280 mAh (rechargeable)
• Connectivity: USB-C, Bluetooth, and camera-based QR signing

Use Cases and Market Position

Blockstream Jade Plus is primarily used for Bitcoin-focused self-custody, including long-term storage and routine signing for on-chain transactions. It is also relevant for users who actively use Liquid assets and want a signer that is designed to support both Bitcoin and Liquid within the same ecosystem. Compared with wallets that emphasize broad multi-chain coverage, Jade Plus is positioned around Bitcoin-centric security and open-source transparency, with optional air-gapped operation for users who prefer minimizing connectivity.

Risks and Considerations

• Self-custody responsibility: Loss of recovery information can make funds unrecoverable, and exposure of recovery information can enable theft.
• Transaction deception: Hardware wallets protect keys, but users can still approve malicious or unintended transactions if they do not verify on-device details.
• Connectivity tradeoffs: Bluetooth and USB-C can improve convenience, while QR workflows can reduce certain exposure; choosing a mode should match the user’s operational needs.
• Multisig complexity: Multi-signature setups can improve resilience but require careful planning for backups, device loss, and recovery procedures.