Security & privacy✦Editorial profile
Gordian Seed Tool
An iOS tool for managing cryptographic seed backups.
Project or serviceView listing
Security & privacy
SeedSigner
Build an offline Bitcoin signing device.
What it does
SeedSigner is an open-source project for assembling a Bitcoin signing device from supported components. It uses QR-based transaction workflows and a separate compatible wallet. Construction, verified software and recovery handling are part of the security of a completed device.
Features & requirements
- Custody
- Self-custodySource · 8 Oct 2026 ↗
- Pricing
- Free software; network or service fees may applyThe software is free; a DIY device needs compatible purchased components.Source · 8 Oct 2026 ↗
- Platforms
- HardwareSource · 8 Oct 2026 ↗
- Bitcoin support
- Bitcoin-related serviceSource · 8 Oct 2026 ↗
Sources & freshness
1Bitcoin editorial ↗Source refreshed · 8 Oct 2026
Editorial review · 8 Oct 2026
Imported records link to their sources. An entry is a discovery aid, not an endorsement.