SeedSigner
Privately build a secure bitcoin signing device.
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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
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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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