Bitcoin Wallet Backup & Self Custody Kits and Supplies

Introducing Seed Stacks: the innovative, wallet-friendly solution to securing your Bitcoin keys! Born from BlockMit’s genius, Seed Stacks transform everyday materials into your ultimate crypto safeguard. With our stylish Cardinal die, you can easily emboss BIP39 seed words onto M8 washers—accessible, durable, and budget-friendly.

Why settle for ordinary storage when you can customize your Seed Stack? Starting with just an M8 bolt, nut, and washer, you can upgrade with eye-catching sleeves or unique Bitcoin-acorn nuts. Perfectly designed to fit in standard 1oz silver round containers, Seed Stacks are not just smart; they’re savvy—crafted from items anyone can find.

Join the revolution of secure, stylish crypto storage—because protecting your assets should be as easy as stacking it up! Get ready to stack your way to peace of mind!

Disclaimer – Anyone can make a Seed Stack and we sell to everyone.  However, it’s important to understand that stamping steel washers with steel tools is NOT for everyone.

These BIP Keys made using a manual press rather than a hammer.

Seed Stacks – Just the Basics

$ 5
85
per Wallet
  • 25 - Blank M8 X 24 Stainless Steel Washers
  • 2 Pack Stainless Steel 60mm Hex Bolt
  • 2 Pack Stainless Steel Nut Plain
$ 4
85
per Wallet
  • 50 - Blank M8 x 24 Stainless Steel Washers
  • 4 Pack Stainless Steel 60mm Hex Bolt
  • 4 Pack Stainless Steel Nut Plain
$ 3
85
per Wallet
  • 100 - Blank M8 x 24 Stainless Steel Washers
  • 8 Pack Stainless Steel 60mm Hex Bolt
  • 8 Pack Stainless Steel Nut Plain
Best Value

Seed Stacks Mini – Starter Kits

$ 7
90
per Wallet
  • 25 - M8 X 24 Stainless Steel Washers
  • 2 Pack Stainless Steel 40mm Hex Bolt
  • 2 Pack Stainless Steel Nut Plain
  • 2 Pack Decorative Bitcoin Thumb Nuts
$ 6
35
per Wallet
  • 50 - M8 x 24 Stainless Steel Washers
  • 4 Pack Stainless Steel 40mm Hex Bolt
  • 4 Pack Stainless Steel Nut Plain
  • 4 Pack Decorative Bitcoin Thumb Nuts
$ 5
18
per Wallet
  • 100 - M8 x 24 Stainless Steel Washers
  • 8 Pack Stainless Steel 60mm Hex Bolt
  • 8 Pack Stainless Steel Nut Plain
  • 8 Pack Decorative Bitcoin Thumb Nuts
Best Value

More About Seed Stack Kits

Creating Seed Stacks by marking steel washers with text requires work.  It is possible for anyone to do, but this is a DYI project and may not be suitable for everyone.  Familiarity with hand tools and a workspace is recommended.  Notably a strong table like a bench or anvil.  It is possible to punch washers on a good floor but carpeting is not going to work well.  A flat, hard surface is highly recommended.  

The images showcased here were produced using the Cardinal M824 Die and a small press rather than a hammer.  Your results will vary based on your individual skills, commitment, and patience.

The M824 Die and the 6mm  (often referred to as 3mm) Punches are the tools required to punch the actual numbers and letters into the washers.  They are NOT included in the Basic Seed Stack Kits.  We do not sell the dies and punches together with the Seed Stack Kits because they are both a one time purchase.  Therefore it is unnecessary to offer the die and punches with each Seed Stack Kit.

Seed Stacks are designed using common, ubiquitous items like washers and bolts so are accessible to all levels of wealth.  Often times M8 x 24 washers and M8 x 60mm bolts & nuts can be found for free on old machinery or very cheap.

BIP Keys - M824 Stainless Steel Washers permanently inscribed with data
24 Words and 12 Word Seed Stacks with Bitcoin Thumb Nut
This is a loose configuration with the slim nut being used as a Lock Nut