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Hi Stackers,
It’s Hypno, been in Bitcoin since 2017, running nodes, playing with wallets, stacking sats, and trying to keep my seed phrase safe, actually.
Last year, I needed a durable backup, but the metal options I was looking at were a hassle to set up, too expensive, or discontinued.
So I decided to build my own.
I’d never designed that kind of product before. So I learned CAD, experimented with 3D-printed jigs, and researched laser-cut metal. I wanted something simple: modular, tamper-evident, easy to stamp with basic tools, and built to last.
I made it for myself. But once I realized how much work it took, and how many of us struggle with the same problem, I figured: if it works for me, why not for others too?
My original plan was to manufacture it here in Thailand. I emailed five local metal shops. Followed up once.
Not. One. Reply.
So I found a shop in China, placed a prototype order, and in under three weeks, I had samples in hand, plus a real human contact who answered emails.
That’s why each unit has “MIC” engraved on it: Made in China. Not because I idealize the system, but because they responded.
I can’t overstate how much that mattered.
This is a family project.
  • I built the product, and the website (marketing’s my day job).
  • My wife gave feedback and helped with admin, including the import license.
  • My son helped package the sets, sorting plates, jigs, keyrings, and cable ties into bags.
  • My wife’s sister took the product photos.
  • A friend helped shoot the tutorial video.
  • My dad placed the first order, just to run through the whole process, and give feedback.
It’s small. It’s real. And it works.
Seed Keys is live: seedkeys.xyz
The first product is a metal backup set, made from 316L stainless steel, with detachable keys, tamper seals, and a precision stamping jig.
Available for single-signature and 2-of-3 multisig wallets.
The kit includes everything except the letter punch and hammer, both standard tools you can find locally, or may already own.
I excluded the punch set mainly because it’s heavy and expensive to ship globally. Given it’s a common size (3mm / 1/8”), it made sense to leave it out. No need to charge you for something you might already have.
Starting small. Aiming to support sovereignty.
Feedback and questions welcome.
10 sats \ 1 reply \ @nerd2ninja 4h
You should look at the stress tests performed on other metal plate storage systems, think about how yours would hold up.
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300 sats \ 0 replies \ @Hypno OP 4h
Thanks, I looked at Lopp's tests. And the closest storage solution to compare with is Crypto Keys, which ranks A overall. The difference with Seed Keys is that I used 316L stainless steel instead of 304 - so it should fare even better on corrosion.
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There’s no version with 24 words or more?
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21 sats \ 0 replies \ @Hypno OP 4h
You can put 24 words on the numbered keys (recto/verso). And there's an extra blank key. You could add 2 words there, but one of them would remain visible. So, you lose the temper-proofing.
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21 sats \ 1 reply \ @kepford 3h
Cool idea. But please... no one put this on your key ring :)
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I'll plan a warning on the packaging 🤣
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21 sats \ 1 reply \ @AG 3h
Nice to see new ₿roducts! Well done, I'll add it to our next TM7 from the ~AGORA P2P Marketplace. Thanks for sharing it around here.
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Thanks, I appreciate the kind words, and TM7 and AGORA sounds great!
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21 sats \ 0 replies \ @plebpoet 3h
love to see this!
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Tamper proof? What is to prevent someone releasing the keyring side and viewing the seed phrase then refitting it? Or do you use the cable ties on both ends?
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That's a beautiful design!
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You have omitted providing your asking price. It always worried me when people do that. How much do you charge for a set?
Being in Thailand I assume you are unable to accept Bitcoin as payment since they banned MoE use of Bitcoin?
Understand totally your experience getting things fabricated in China more easily rather than Thailand - they are generally the best for this - I have previously tried Thai and Indian manufacturers for various custom design products but China is almost always far more responsive and cost competitive for custom production runs.
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The price is on their shop. https://seedkeys.xyz/ The price I see is $55
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Yes I saw that after following the link. Would have preferred it being included in the post, but all good. Would be surprised if cost of production is more than $5 but if shipping is included maybe its ok. However could just stamp seed phrase on a plate of s/s and put it in an envelope or rivet two sheets together if you wanted to use this method. The cable tie is hardly secure if the item falls into the wrong hands.
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