Cowrie Research

blockstream-app-jade-primary-sources-2026-05-01

4 min read

Blockstream App / Jade primary-source snapshot

Fetched: 2026-05-01 UTC

1) Official Blockstream App product page

Source: https://blockstream.com/app/

Selected excerpts from the official site:

On‑chain Bitcoin, Lightning, and Liquid assets, all at your fingertips in one unified view.

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.

No mandatory documents or personal data. Connect to your own node and route traffic through Tor with a single tap.

Additional signals from the source:

  • The product page is the clearest high-level statement that Blockstream is shipping a unified Bitcoin/Lightning/Liquid wallet surface rather than a narrow single-rail wallet
  • Jade is presented as a first-party extension of the app, not an unrelated hardware-wallet integration
  • The privacy and own-node messaging are part of the top-level product positioning, which matters for classification

2) Official Jade product page

Source: https://blockstream.com/jade/

Selected excerpts from the official site:

Jade’s unique blind oracle encryption allows your device to remain fully open-source while preventing physical key extraction.

Jade does not connect to the internet, which protects your keys and limits your exposure to insecure environments.

Jade is fully open source.

Additional signals from the source:

  • The Jade page frames the device around a “Virtual Secure Element,” offline key storage, and open-source firmware rather than around generic lifestyle hardware language
  • The comparison table also highlights anti-exfil, optional stateless use, air-gapped transactions, and air-gapped firmware upgrades on newer models, which helps distinguish Jade from simpler companion devices
  • The live product surface now clearly spans Jade Plus and Jade Core, not only the original Jade device

3) Jade firmware repository

Source: https://github.com/Blockstream/Jade

Selected excerpts/signals from the official repo:

Official Blockstream Jade hardware units can only be updated via a supported companion app, or by using the Firmware Update Instructions.

Additional signals from the source:

  • The repo documents four official device targets: original Jade, Jade 1.1, Jade Plus (jade_v2), and Jade Core (jade_v2c)
  • The build docs expose a serious firmware engineering surface: ESP-IDF dependencies, Docker images, emulator/QEMU flows, Python client tooling, and explicit DIY hardware support
  • The repo makes clear that there is both an official-device path and a separate DIY / development-device path, which is useful for classification because it turns Jade into a reproducible and inspectable hardware-software stack rather than a closed appliance

4) Jade reproducible-build guide

Source: https://raw.githubusercontent.com/Blockstream/Jade/master/REPRODUCIBLE.md

Selected excerpts/signals from the official repo docs:

The purpose of these builds is purely to reproduce the build and hence verify the firmware offered by Blockstream is indeed built from the publicly available tagged source code.

Additional signals from the source:

  • The guide explicitly separates verification builds from flashable official-device artifacts, which suggests Blockstream expects technically sophisticated users to audit releases without compromising production devices
  • This is a strong primary-source signal that firmware verification is a product feature, not just a side note for contributors

5) Blockstream App repositories

Sources:

Selected excerpts/signals from the official repos:

Blockstream is a non-custodial Bitcoin wallet - it allows you to safely store, send, and receive your Bitcoin.

It is also available for Android and iOS, and it is based on gdk, our cross-platform wallet library.

We offer a variety of advanced features, such as letting our users set their own spending limits, watch-only access for observers, and our unique multisig security model.

Additional signals from the source:

  • The repo surface shows that the app is not just a thin mobile client; it spans desktop, Android, iOS, and a shared GDK library
  • The READMEs repeatedly frame the product as non-custodial and verification-conscious, with signature-verification links for software releases
  • Together with the App + Jade product pages, the repo corpus makes Blockstream look like a cohesive app-and-signer control plane

Notes

  • Blockstream App / Jade appears best cataloged as bitcoin wallet-control-plane / hardware-wallet infrastructure / self-custody app-and-signer stack / Liquid-and-Lightning access layer.
  • No canonical standalone whitepaper or litepaper surfaced in this pass.
  • The Blockstream Help Center was Cloudflare-gated during this retrieval pass, but the official product pages and first-party repositories were sufficient to recover the main operating model.

Graph View