# trezor/trezor-firmware

:lock: Trezor Firmware Monorepo

Repository: https://github.com/trezor/trezor-firmware
Canonical: https://ross.abutalabs.com/products/trezor-firmware
Homepage: https://trezor.io
Language: C
License: NOASSERTION
License Family: other
Topics: trezor, micropython, python, firmware, bitcoin, wallet, rust, c, cryptography, cryptocurrency
Last push: 2026-08-26T19:31:30+00:00

## Health v2 (maintenance only)
Score: 77/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 35, longevity 100
- inputs: {"age_days": 2702, "days_push": 7, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1813, forks 797 (observed 2026-08-28T04:05:39.717652+00:00)

## What it is
The official open-source firmware monorepo for Trezor hardware wallets, containing firmware for Trezor One and Trezor T/Safe devices, a standalone cryptography library, coin definitions, and a Python client library with the trezorctl CLI. It is the complete source needed to build, audit, and test Trezor device firmware.

## Use cases
- build or audit trezor hardware wallet firmware
- verify that my trezor device runs genuine open-source code
- control a trezor device programmatically from python
- add support for a new cryptocurrency to trezor
- contribute to hardware wallet security research
- run firmware tests for a trezor device

## When to choose
- you own or develop for Trezor hardware wallets and need official firmware or tooling
- you want to audit the security-critical code of a hardware wallet
- you need the Python client library or trezorctl to interact with Trezor devices

## When to avoid
- you need firmware for other hardware wallet brands like Ledger or Coldcard
- you just want a software crypto wallet without dedicated hardware
- you want a ready-made end-user app rather than firmware and developer tooling

## Facets
- artifact type: application
- maturity: active
- function: cryptography, security, embedded, sdk, testing
- domain: security, embedded-systems, hardware, fintech
- platform: embedded, python, rust, cpp, c
- tags: hardware-wallet, firmware, bitcoin, micropython, trezor, cold-storage, monorepo, protobuf, cryptocurrency

## Member repositories
- trezor/trezor-firmware (main) score 77

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:39.717652+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:21:11.011922+00:00, confidence not recorded.
  - readme: https://github.com/trezor/trezor-firmware (fetched 2026-08-28T04:05:39.717652+00:00, sha bf3fb63a7bc4)
  - homepage: https://trezor.io (fetched 2026-08-29T10:59:48.541984+00:00, sha cb62f4b8231b)
  - site_page: https://trezor.io/company (fetched 2026-08-29T10:59:48.551969+00:00, sha 68de38a87eba)
  - site_page: https://trezor.io/faqs (fetched 2026-08-29T10:59:48.554047+00:00, sha a3a78d3b32fe)
- Data as of 2026-08-30T08:39:29.467469+00:00.