The Seedor Bitcoin B: A Precision Bitcoin Metal Stamp for Serious Cold Storage
Most seed backup tools are sold by people who have never secured a wallet. This bitcoin metal stamp is different: built by bitcoiners, specced openly, and designed to work with the Seedor holder jig that keeps every strike vertical and every impression clean.
Table of Contents
- What Is the Seedor Bitcoin B Metal Stamp
- Why CryptoCloaks
- Bitcoin Metal Stamp Specs and Compatibility
- How It Compares
- FAQ
What Is the Seedor Bitcoin B: Your Bitcoin Metal Stamp for Cold Storage
The Seedor Bitcoin B is a 6 x 6 x 60 mm punch tool machined from drawn 40CR tool steel. It carries the Bitcoin B logo at a 3.5 mm font height. CryptoCloaks sized it specifically for the Seedor alignment system, which means the 6 mm shank fits the holder channel and every strike lands at 90 degrees to the backup surface.
A bitcoin metal stamp needs to do one thing well: transfer a clean, readable impression to your backup surface without slipping, drifting, or leaving a ghost mark. The Seedor Bitcoin B does exactly that. The 40CR steel is hard enough to mark stainless plates, leather, and plastics without deforming the tip, and tough enough to take repeated hammer blows without losing geometry.
This is not a generic crypto tool with an unverified steel spec and a coin logo. It is a Bitcoin-specific stamp, built to Bitcoin standards, sold by a shop that has been in the space since 2017. If you are building a cold-storage backup meant to last decades, this is the mark that belongs on it.
Why CryptoCloaks
CryptoCloaks has been in the Bitcoin space since 2017. Ricky personally picks, prints, and ships every order from his shop in America. That accountability matters when you are buying a tool you will use to protect generational wealth. There is no warehouse, no dropship chain, no anonymous marketplace seller behind this bitcoin metal stamp.
The stamp ships as part of a complete ecosystem. The Seedor stamp holder for vertical alignment keeps every punch perpendicular to the surface during a strike. Reddit threads on DIY metal stamping consistently name misaligned strikes as the top failure mode. A tilted stamp leaves a partial, unreadable impression. The holder eliminates that variable before it becomes a problem.
Additionally, CryptoCloaks publishes its specs openly. You know the steel grade. You know the font height. You know the shank dimensions. Generic marketplace listings cannot say the same. That transparency is a direct expression of the Bitcoin ethos: verify, do not trust.
Bitcoin Metal Stamp Specs and Compatibility
- Dimensions: 6 x 6 x 60 mm
- Font height: 3.5 mm
- Material: Drawn 40CR tool steel
- Weight: 3 oz
- Compatible surfaces: Metal plates, leather, plastics
- Compatible jig: Seedor holder system
- SKU: CC-SD-SEEDBITCB
Steel grade matters more than most buyers realize when selecting a bitcoin metal stamp. Jameson Lopp’s metal Bitcoin seed storage stress test validates drawn tool steel in the 40CR hardness range as capable of leaving legible impressions in stainless steel plates under severe fire, crush, and corrosion conditions. A soft stamp deforms at the tip. A brittle stamp chips. Drawn 40CR holds its geometry through thousands of strikes, keeping the Bitcoin B crisp on every backup you make.
The 3.5 mm font height fits standard seed plate grids without crowding adjacent characters. The 60 mm handle provides a controlled grip surface during a hammer strike. At 3 oz, this bitcoin metal stamp is light enough for precise positioning and solid enough to feel intentional in hand.
How It Compares
| Feature | CryptoCloaks Seedor Bitcoin B | Amazon / eBay / Etsy Alternatives |
|---|---|---|
| Steel grade | Drawn 40CR tool steel (published) | Unspecified or stainless (varies by seller) |
| Font height | 3.5 mm (published) | Not published |
| Bitcoin-specific design | Yes, Bitcoin B logo | Generic crypto or no logo |
| Holder / jig compatibility | Yes, Seedor holder system | No ecosystem support |
| Brand accountability | Bitcoin-native shop, verified reviews, Made in America | Third-party marketplace seller, no cold-storage context |
Frequently Asked Questions
Can I use this stamp to punch my Bitcoin seed phrase into a metal plate?
The Seedor Bitcoin B is a bitcoin metal stamp designed to mark the Bitcoin B logo, not individual BIP39 seed words. For a complete seed phrase backup, you pair this stamp with a set of letter and number punches sized to the Seedor grid. The Bitcoin B stamp serves as a clear identifier on your backup plate, marking it as a Bitcoin wallet backup rather than a generic document. That distinction matters in an emergency, when someone else may need to locate and use your backup quickly. The 40CR steel punches cleanly into standard stainless steel plates, titanium sheets, and aluminum backups at the thicknesses most cold-storage products use. Plan one deliberate strike per surface position and use the Seedor holder to keep every mark aligned.
What surface should I stamp on to get the cleanest impression?
This bitcoin metal stamp is compatible with metal plates, leather, and plastics. For long-term seed backups, stainless steel or titanium plates produce the most durable and legible impressions. Place a firm, flat backing under your plate before striking. A single deliberate hammer blow at full arm weight gives cleaner results than a series of lighter taps. Avoid any surface with flex or give beneath the plate, because movement mid-strike causes the stamp to drag and leaves a partial impression. For practice runs before committing to your real backup plate, use a scrap piece of aluminum or a leather offcut. Both take clean marks at moderate strike force, allowing you to dial in your technique without risking your actual backup material.
Does this stamp work with the Seedor alignment holder / jig?
Yes. CryptoCloaks designed this bitcoin metal stamp specifically for the Seedor holder system. The 6 x 6 mm shank profile fits the Seedor jig channel, which holds the stamp at exactly 90 degrees to the backup surface during a strike. That vertical alignment is the single most important factor in getting a clean, full-depth impression. Without a holder, even experienced stampers tilt the punch slightly on impact, leaving a partial mark on one edge. The Seedor holder removes that variable entirely. If you are serious about building a readable, durable seed backup, pairing this stamp with the Seedor holder is the correct approach. It is not an optional upgrade, it is the system working as designed.
Add the Seedor Bitcoin B to your cold-storage toolkit today. It is the bitcoin metal stamp built with published steel specs, a jig-compatible design, and nearly a decade of Bitcoin-native community trust behind every order. Bitcoin accepted. Made in America. Ships in 2-3 business days.






Neil (verified owner) –
Pretty cool. Leaves a clean print, good buy.
James Ackiss (verified owner) –