Cowrie Research

blockstream-app-jade

3 min read

Blockstream App / Jade

  • Name: Blockstream App / Jade
  • URL: https://blockstream.com/app/
  • Category: bitcoin wallet-control-plane / hardware-wallet infrastructure / self-custody app-and-signer stack / Liquid-and-Lightning access layer
  • Tags: bitcoin-ecosystem
  • Summary: Blockstream App / Jade is a Bitcoin wallet-and-signer stack spanning Bitcoin, Liquid, Lightning, Jade hardware, and GDK-backed app plumbing. The useful part is the rail-rich companion stack and real signer integration, not a grand wallet theory.
  • What it does:
    • Provides a non-custodial Bitcoin wallet across desktop, Android, and iOS under the current Blockstream App brand
    • Presents on-chain Bitcoin, Lightning, and Liquid assets in one wallet surface rather than as separate products
    • Integrates with Blockstream Jade hardware wallets for cold-storage signing while retaining companion-app convenience
    • Exposes privacy and operator features such as own-node connectivity, Tor routing, spending limits, and watch-only access
    • Publishes open-source Jade firmware, desktop/mobile wallet code, and a shared GDK wallet library, with reproducible-build guidance for official Jade firmware verification
  • Key claims:
    • The current Blockstream App page says users get “On‑chain Bitcoin, Lightning, and Liquid assets, all at your fingertips in one unified view,” which is the clearest top-level statement that this is a multi-rail Bitcoin wallet stack rather than a narrow on-chain app
    • The same page says “Integration with Blockstream Jade gives you the best of both worlds: cold storage of your private keys combined with the convenience of the Blockstream app,” which is the clearest high-level reason to catalog App + Jade together
    • The app page also says there are “No mandatory documents or personal data” and that users can “Connect to your own node and route traffic through Tor with a single tap,” which makes the privacy and operator posture part of the product surface rather than an obscure advanced setting
    • The Android app repository describes the app as non-custodial and highlights “spending limits, watch-only access for observers, and our unique multisig security model,” which broadens the stack beyond a generic mobile wallet
    • The Jade product page says Jade uses a “Virtual Secure Element” and “blind oracle encryption” so the device can remain “fully open-source while preventing physical key extraction,” which is the central hardware-design claim Blockstream uses to distinguish Jade from secure-element black-box devices
    • The Jade firmware repository documents multiple official device targets (original Jade, Jade 1.1, Jade Plus, and Jade Core), companion-app-based update paths for official devices, and a parallel DIY / emulator path for developers, which makes the firmware repo unusually important as a primary source
    • The Jade reproducible-build guide explicitly says its purpose is to let users “verify the firmware offered by Blockstream is indeed built from the publicly available tagged source code,” which is a strong signal that firmware verification is a first-class part of the operating model
  • Whitepaper: No canonical standalone Blockstream App or Jade whitepaper/litepaper surfaced in this pass. The clearest current sources of truth are the official Blockstream App and Jade product pages plus the Jade and Blockstream App repositories; see ../whitepapers/blockstream-app-jade-primary-sources-2026-05-01.md.
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