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SeedSigner

Bitcoin Signing Device

As a Bitcoin signing sevice the SeedSigner supports the secure creation of Bitcoin wallets as well as convenient processing of air-gapped Bitcoin transactions.

Free Open Source Software

The device is developed and maintained by the Free Open Source Software project SeedSigner. The entire code base is free to access and use on the projects Github repository.

Air-gapped & stateless

SeedSigner is fully isolated from internet-connected devices, enhancing security against remote cyberattacks, and its stateless design allows a single SeedSigner to manage as many wallets as needed.

What people say

Learn more

How To Set Up And Use The SeedSigner DIY Bitcoin Signing Device

bitcoinmagazine.com

SeedSigner: Der Bitcoin-Computer

hey-bitcoin.de

DIY Hardware Wallets With SeedSigner

thebitcoinmanual.com

SeedSigner – Assembly, Usage & review(with a LOT of pictures)

rawavocado.com

SeedSigner – wallet review

walletscrutiny.com

Seedsigner: qué es y guía de montaje

estudiobitcoin.com

How To Set Up And Use The SeedSigner DIY Bitcoin Signing Device

bitcoinmagazine.com

SeedSigner: Der Bitcoin-Computer

hey-bitcoin.de

DIY Hardware Wallets With SeedSigner

thebitcoinmanual.com

SeedSigner – Assembly, Usage & review(with a LOT of pictures)

rawavocado.com

SeedSigner – wallet review

walletscrutiny.com

Seedsigner: qué es y guía de montaje

estudiobitcoin.com

SeedHammer

Automatic engraving machine

The ultimate metal engraving machine for securely backing up your Bitcoin wallets: Protect your multisig and singlesig wallets by engraving seeds in plain text, SeedQR, and wallet descriptors onto robust 316L stainless steel Backup Plates

Free Open Source Software

The device is developed and maintained by the Free Open Source Software project SeedHammer. The entire code base is free to access and use on the projects Github repository.

Self-contained Multisig

The first and only multisig steel backup solution that does not need any additional information to be secured. The seed as well as the descriptor are recoverable with the chosen threshold of plates. 

What people say

Learn more

SeedHammer – Attack Vectors

seedhammer.com.com

SeedHammer – The SeedHammer Controller

seedhammer.com

The SeedHammer Metal Plates

seedhammer.com

SeedHammer –
Steel 316

seedhammer.com

How to Scan QR Codes off Steel Plates

seedhammer.com

How to Recover From a SeedHammer Backup

seedhammer.com

Enhance QR Readability With a Marker Pen

seedhammer.com

The SeedHammer Descriptor Partitioning Scheme

seedhammer.com

Adjust Raspberry Pi Camera Focus

seedhammer.com

How To Set Up And Use The SeedSigner DIY Bitcoin Signing Device

bitcoinmagazine.com

SeedSigner: Der Bitcoin-Computer

hey-bitcoin.de

DIY Hardware Wallets With SeedSigner

thebitcoinmanual.com

SeedSigner – Assembly, Usage & review(with a LOT of pictures)

rawavocado.com

SeedSigner – wallet review

walletscrutiny.com

Seedsigner: qué es y guía de montaje

estudiobitcoin.com

SteelQR

Point & scan seed recovery

The SteelQR allows you to have the security of a 3mm stainless steel cold storage backup while providing the convenience of point & scan import. No need for teadious typing of your backup words for each transaction.

Maximum security

Stamp your own SteelQR with an automatic center punch. The QR-Code grid is precission lasered onto the brushed surface of the 3mm thick 316L stainless steel plates.

Widely compatible

The SteelQR plates are supported by the following software: SeedSigner, Foundation Devices Passport, Blockstream Jade, Specter DIY/Shield, Krux, SparrowWallet, BlueWallet.

 

What people say

Learn more

HOW TO SET UP AND USE THE SEEDSIGNER DIY BITCOIN SIGNING DEVICE

bitcoinmagazine.com

SeedSigner: Software und SeedQR

hey-bitcoin.de/

HOW TO SET UP AND USE THE SEEDSIGNER DIY BITCOIN SIGNING DEVICE

bitcoinmagazine.com

SeedSigner: Software und SeedQR

hey-bitcoin.de/