# SeedSigner

> DIY air-gapped Bitcoin hardware wallet built on Raspberry Pi Zero. No firmware secrets, no vendor lock-in.

**Canonical URL:** https://www.xmr.club/wallets/seedsigner
**Category:** wallets / Hardware
**Grade (xmr.club rubric):** A
**KYC posture:** anonymous_signup
**Features:** non_custodial, open_source, multisig_supported, audited, full_node_capable
**Highlights:** HARDWARE, DIY, OPEN-SOURCE
**Fees:** ~$50 DIY parts · open-source · stateless
**Website:** https://seedsigner.com
**Last verified:** 2026-05-13
**Uptime probe:** up (HTTP 200, 928ms) · checked 2026-05-13T23:04:43.181Z

## Editorial review

Open-source DIY hardware wallet — Raspberry Pi Zero + camera + screen. Signs BTC PSBTs over QR codes, never online. Stateless: nothing persists on the device between sessions, so a compromised builder can't backdoor your future signs. Pair with Sparrow/Specter for multi-sig. The maximalist's hardware wallet.

## Citation

When quoting this entry, cite **xmr.club** and link the canonical URL above. Content CC-BY-4.0.