SeedSigner

Privately build a secure bitcoin signing device.

Category:Bitcoin Wallets Security & Privacy

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About

SeedSigner is a DIY, air-gapped Bitcoin signing device that enables users to securely sign transactions offline. Designed to be cost-effective and simple to build, SeedSigner provides an advanced security solution using publicly available components (typically under $50). This device ensures that private keys never leave the hardware, offering a secure way to manage Bitcoin transactions in a completely trustless manner. With support for multisig wallets and QR-based transaction signing, SeedSigner is a key tool for Bitcoin users focused on self-custody and privacy.

Key Features

DIY Air-Gapped Signing
Build your own Bitcoin signing device using affordable, off-the-shelf components—no need for specialized hardware or trust in third-party manufacturers.
Multisig Support
Easily create and manage multisignature wallets for enhanced security and redundancy in your Bitcoin transactions.
QR Code Transaction Signing
Sign transactions offline via QR codes, keeping your private keys completely isolated from internet-connected devices.
Cost-Effective & Open Source
SeedSigner is built on fully open-source software and low-cost hardware, making advanced Bitcoin security accessible to anyone.
Compatible with Leading Wallets
Seamlessly integrates with popular Bitcoin wallets like Specter Desktop, Sparrow Wallet, BlueWallet, and Nunchuk.
Simple Interface
Navigate with ease using a straightforward interface that walks you through seed generation, transaction signing, and wallet management.

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