{"repo":"cmyk/seedetcher","free":true,"listed":false,"github":"https://github.com/cmyk/seedetcher","clone":"git clone https://github.com/cmyk/seedetcher.git","description":"Self-Contained Multisig Steel Bitcoin Wallet Backups","language":"Go","stars":11,"topics":["bitcoin","self-custody"],"license":"Apache-2.0","category":"blockchain-web3","readme_excerpt":"SeedEtcher – Self-Contained Multisig Steel Bitcoin Wallet Backups SeedEtcher is an open-source, air-gapped system for creating durable Bitcoin backups by printing seed phrases, descriptors, and QR codes with a standard laser printer and permanently etching them into metal. It minimizes trust and attack surface by relying on offline hardware, simple materials, and a transparent, reproducible workflow instead of expensive dedicated machines. Once you get the hang of the workflow a double-sided plate can be done in 1.5–2h. Starting with version b0.3 prep-time and etch time halved! The following things were substantially improved or added: - Multisig uses descriptor-share backups (no full descriptor on a single plate). These wallet configs default to UR/XOR-compatible shares: 1/2 , 2/2 , 2/3 , 2/4 , 4/4 , 3/5 , and any n-1/n . This replaces b0.2's custom SE1 Shamir share method for interoperability. All other wallet types stay on full descriptor. - All Brother lasers are supported (even host-based). PCL/PS remains the recommended way to print. HBP (host based printing) is capped to 600dpi (memory limit of pi zero) All other brands that support true PCL or PostScript should work too. See: printers.md - Print output can be sent non-inverted and non-mirrored for checking before printing to transfer paper. - A new method (SeedEtcher Transfer Stack™) leverages the use of silicone sheets to reliably transfer toner masks to both sides of a metal plate at once. This means, you can also e","default_branch":null,"files":null,"tree":[],"storefront":"/r/cmyk","claimed":false,"request_supported":{"post":"https://gitbuyer.com/r/cmyk/seedetcher/request-supported","requests":0},"note":"indexed from public GitHub; nothing is for sale on this page. Clone it from GitHub. Paid listings live at /search."}