# SeedSigner/seedsigner

Use an air-gapped Raspberry Pi Zero to sign for Bitcoin transactions! (and do other cool stuff)

Repository: https://github.com/SeedSigner/seedsigner
Canonical: https://ross.abutalabs.com/products/seedsigner
Language: Python
License: MIT
License Family: permissive
Last push: 2026-08-23T02:21:37+00:00

## Health v2 (maintenance only)
Score: 86/100 (v2, computed 2026-09-03T02:39:23.370411+00:00)
- activity 99, release rhythm 60, longevity 100
- inputs: {"age_days": 2089, "days_push": 11, "days_rel": 57, "gap_med": 259.0, "n_releases_24m": 3}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1244, forks 340 (observed 2026-08-28T04:04:06.806188+00:00)

## What it is
SeedSigner is a FOSS application that turns a Raspberry Pi Zero with a camera and screen into an air-gapped, stateless Bitcoin signing device. It handles BIP39 seed creation, SeedQR transcription, and QR-based transaction signing entirely offline.

## Use cases
- build a cheap air-gapped bitcoin hardware wallet
- sign bitcoin transactions offline via QR codes
- generate a BIP39 seed phrase from dice rolls
- set up a multisignature bitcoin wallet
- transcribe a seed phrase into a printable SeedQR
- store bitcoin private keys without any network connectivity

## When to choose
- you want a sub-$50 DIY signing device with verifiable, reproducible builds
- you need stateless operation where secrets never touch persistent storage
- you prefer fully open-source, community-maintained bitcoin tooling
- you want multisig wallet coordination with QR-based data exchange

## When to avoid
- you want a plug-and-play commercial hardware wallet with warranty and support
- you need altcoin support beyond Bitcoin
- you are uncomfortable assembling hardware components yourself
- you need wireless connectivity or persistent key storage on the device

## Facets
- artifact type: application
- maturity: active
- function: cryptography, security, gui, embedded
- domain: security, privacy, self-hosted, hardware
- platform: embedded, python
- tags: bitcoin, hardware-wallet, air-gapped, signing-device, raspberry-pi, multisig, seed-phrase, bip39, qr-code, stateless, cryptocurrency, linux

## Member repositories
- SeedSigner/seedsigner (main) score 86

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:06.806188+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 2026-08-30T05:08:13.714948+00:00, confidence not recorded.
  - readme: https://github.com/SeedSigner/seedsigner (fetched 2026-08-28T04:04:06.806188+00:00, sha 6787e86e00f0)
- Data as of 2026-08-30T08:39:29.467469+00:00.