BIP39 Center-Punch Washer Backup — a DIY metal backup using stainless-steel washers, braille-style decimal encoding, printable punching jigs, and mod-10 checks.
-
Updated
Aug 18, 2026
#
metal-backup
Here is 1 public repository matching this topic...
Add this topic to your repo
To associate your repository with the metal-backup topic, visit your repo's landing page and select "manage topics."