SeedSignerDIY / stateless signing device

SeedSigner DIY

Name: SeedSigner DIY
Brand: SeedSigner

SeedSigner DIY is a DIY / stateless signing device released in December 2020. Key specs: open-source firmware, air-gapped signing, signing connectivity QR code, microSD, screen size 1.3″.

4.0Score

Security2.6

Open source5.9

Bitcoin features7.8

Ease of use2.6

Connectivity4.6

price range€65–85Reference price converted from USD

Full specifications

Released: December 2020
Type: DIY / stateless signing device
Brand: SeedSigner
Popularity: #21 of 141
Model numbers: Seed Signer SeedSignerSeedSigner

NoSecure Element chip

YesOpen-source firmware

YesAir-gapped signing

QR code, microSDSigning connectivity

1.3″Screen size

NoBuilt-in battery

150 gWeight

Spec guide

How it ranks among DIY signing devices

Spec guide

Screen size · 1.3″Bottom 22%Weight · 150 gBottom 11%

Compared with every model of this kind in the catalog.

Specifications

Full specifications

Security

Secure Element chip: No
Air-gapped signing: Yes
100% air-gapped: Yes
Supply-chain & tamper protection: Yes
Secure boot: No
Anti-klepto (anti-exfil) signing: No

Firmware & open source

Open-source firmware: Yes
Source code available: Yes
Reproducible builds: Yes
Firmware licence: MIT
Upgradable firmware: Yes
Firmware update via: microSD
Bitcoin-only firmware / edition: Yes

Device lock

PIN lock: No
PIN entered on the device: No
Fingerprint unlock: No
Duress PIN / decoy wallet: No
Brick / wipe PIN: No
Wipe after failed attempts: No
Time-delayed unlock: No
Anti-phishing words: No

Keys & backup

BIP39 passphrase: Yes
Shamir backup (SLIP-39): No
Seed XOR: No
BIP85 child seeds: Yes
24-word seed: Yes
SeedQR backup: Yes
microSD backup: No
NFC backup card: No
User-added entropy (dice): Yes
Stateless use (no stored keys): Yes
Multiple seeds on one device: No

Bitcoin features

Multisig: Yes
Taproot: Yes
Message signing: Yes
Coin control: Yes
Own node connection: Yes
Tor support: Yes
Replace-by-fee: Yes
Silent Payments: Yes
Spending limits: No
Testnet: Yes

Supported assets

Altcoins & tokens: No
Bitcoin only: Yes

Connectivity

Signing connectivity: QR code, microSD
USB: No
USB-C: No
Bluetooth: No
NFC: No
QR code camera: Yes
Animated QR (UR): Yes
microSD signing: Yes

Screen & input

Screen: Yes
Screen size: 1.3″
Screen type: IPS LCD
Screen resolution: 240 × 240
Touchscreen: No
Colour screen: Yes
Gorilla Glass: No
Controls: Buttons
QWERTY keyboard: No

Battery & power

Built-in battery: No
Wireless charging: No

Design

Weight: 150 g
Length: 190 mm
Width: 120 mm
Thickness: 50 mm
Materials: Plastic
Water / dust resistance: No
Several colours available: Yes
DIY build possible: Yes

Apps

Desktop app: No
Mobile app: No
Works with wallet apps: Bitcoin Safe, Zeus, Nunchuk, Cove, Electrum, Sparrow, Specter Desktop, Blockstream Green, BlueWallet, Bitcoin Keeper, Bull
Compatible third-party wallets: 11

Other features