SpecterDIY
**Warning: These are highly advanced bitcion tools. They are not suitable for beginers. Please do not use any of these tools if you do not know what you are doing. If you don'tn know what you are doing, please use testnet bitcoin on the padowan wallet.
Specer DIY is a wallet you make yourself. I mean, I didn't do the 3d printing myself, but it's simple to put together and create your own air-gapped hard wallet. This is a Do It Yourself Wallet.You buy the board put it together and plug in a couple wires. That's pretty much how it works. I'ts just a matter of finding the parts.
Specter DIY Is Free And Open Source Software
You can put it together buy yourself but I had help. Okay so here's the deal. I am a hardware wallet affecianado. I...Well...I have a problem. I love testing hardware wallets. To me, it's a better pasttime than baseball. I think I have about a dozen wallets. This is definitely not financial advice. Nobody needs this many hardware wallets, but I lobe experimintign with them. Most of my wallets don't have any bitcoin on them aby the way. I use a lot of testnet coins. If you need some testnet 4 sats, hit me up.
The Specter DIY Wallet is on GitHub(Don't Trust, Verify):
https://github.com/cryptoadvance/specter-diy
Since people sometimes get freaked out when I ask them to click on GitHub Links, I decided to take some screenshots of my favorite parts of the documentatioin on the website.
What Risks Does This Wallet Mitigagte
This wallet is made from off the shelf parts, not a known hardware wallet manufacturer. You might say, Wait I thought the comercials told me those hardware wallets were the best of all besties? I agree, but we can't just trust our favorite influencers. Even if they are trustworthy, we still can't trust them. For example, I love listening to NVK talk about cybersecuroty. He's the best cybersecurity engineer in the business if you ask me. I almost want to be a Cold Card Maxi, but unfortunately this would mean I need to violate the first rule of Bitcoin: don't trust, verify.
Even if I did trust NVK, which ... to be honest...I kinda to, what if he is compromised? What if a spook works among him? We live in a world of exploding pagers where bitcoin is now geopolitcally relevant. We can't be too careful in a world where illegal math has bi-partisan support.
Pulling parts off the shelf mitigagtes this risk. By the way, this is something I have thought about myself, but Seed Signer also mentioned this on the What Bitcon Did podcast. I had the pleasure of meeting Seed Signer at the Bitcoin Conference in 2025. I also like the Seed Signer Wallet for other reasons. On The podcast, he mentioined the Seed Signer idea spun off of the Specter DIY wallet and Michael Flaxman's idea of creating a wallet with a Raspberry Pi that does not have Wi-Fi. There are some risk to the Seed Signer like the Evil Maid Attack and some data extraction exploits using long range radio waves but tools like this are excellent addition to a multi-sig wallet setup.
I got my Specter DIY from Moritz Wietersheim, the founder of Specter Solutions but he has since stepped away from his role. I met him at Pacific Bitcoin in 2022. I saw him speak about the project and told him I was a fan of Specter Desktop, a wallet that came out before Sparrow Wallet. I fan boyed him afer his talk and told him I loved that wallet. I told him How I grocked Michael Flaxman's 10X your BTC Security guide during the lockdows. So he took me to a booth. he showed me how to oput the thing together. I literally needed to put together two wires. Then someone tryed to shill some shitcon I nor anywone else can remember. He acted like you would expect a toxic maxi to act. Then he gave me the wallet.
What Are The Risks of Specter DIY
Well, maybe he "hacked the wallet."
- Maybe the keys are pre-made()retireement attack. I don't think this is the case since I verified the software myself
-Maybe the board is comoromised - Maybe the entropy is not good enough
That's okay, I don't use this wallet for my life savings. I use it as a backup. I hav a wallet using multisig that uses Miniscript To spend requires the TapSigner and the Cold Card Q. After 30 days, I only need the Specter DIY I keep geographically distributed. Specter DIY is one of the only wallets that supports this feature. The Cold CArd products also support MiniScript if you install the Edge Firmware.
I used to have a tap signer in my wallet and if I lose it...Well...That would suck, to be clear, I could recover it, but the TapSigner recovery process is a pain in the mempool. If I send my sats to an address in the same wallet, I the clock resets. If I lose one of the wallets, say the TapSigner in my traditional wallet, I will not be able to spend until the time expires. Losing the Tap Signer in my wallet was a bigger threat than some Bitcoin OG creating this super-complex scheme to steal less than a million sats. Even if he did have this diabolical plan, he would need my output descriptor. Honestly, if he is that good, he could get bigger targets.
To be clear. I assign an extremely low probability to this possobility, but you know the motto: Don't Trust, Verify. For the record, I think Moritz Wietersheim is an honest man.
Specter DIY
Warning: These are highly advanced Bitcoin tools. They are not suitable for beginners. Please do not use any of these tools if you do not know what you are doing. If you don’t know what you are doing, please use testnet Bitcoin on the Padawan wallet.
Specter DIY is a Air-GApped, Bitcoin Only wallet you make yourself, hence DIY. I mean, I didn’t do the 3D printing myself,track every step of the supply chain on this device, but it’s simple to put together and create your own air‑gapped hardware wallet. This is a Do-It-Yourself wallet. You buy the board, put it together, and plug in a couple of wires. That’s pretty much how it works. It’s just a matter of finding the parts. Besides, I don't use it by itself anyway.
Specter DIY Is Free And Open Source Software
You can put it together by yourself, but I had help. Okay, so here’s the deal. I am a hardware wallet aficionado. I… well… I have a problem. I love testing hardware wallets. To me, it’s a better pastime than baseball. I think I have about a dozen wallets. This is definitely not financial advice. Nobody needs this many hardware wallets, but I love experimenting with them. Most of my wallets don’t have any Bitcoin on them, by the way. I use a lot of testnet coins. If you need some testnet 4 sats, hit me up.
The Specter DIY Wallet is on GitHub (Don’t Trust, Verify):
https://github.com/cryptoadvance/specter-diy/
Since people sometimes get freaked out when I ask them to click on GitHub links, I decided to take some screenshots of my favorite parts of the documentation on the website.You'll need to trust that I didn't fudge the docs, but I didn't fudge the docs. and you can verify for yourself if you are worried about that, which I would not be worried about.
What Risks Does This Wallet Mitigate
This wallet is made from off‑the‑shelf parts, not a known hardware wallet manufacturer. You might say, “Wait, I thought the commercials told me those hardware wallets were the best of all besties?” I agree, but we can’t just trust our favorite influencers. Even if they are trustworthy, we still can’t trust them. For example, I love listening to NVK talk about cybersecurity. He’s the best cybersecurity engineer in the business if you ask me. I almost want to be a Coldcard maxi, but unfortunately this would mean I need to violate the first rule of Bitcoin: don’t trust, verify.
Even if I did trust NVK, which… to be honest… I kind of do, what if he is compromised? What if a spook works among them? We live in a world of exploding pagers where Bitcoin is now geopolitically relevant. We can’t be too careful in a world where “illegal math” has bipartisan support.
Pulling parts off the shelf mitigates this risk. By the way, this is something I have thought about myself, but SeedSigner also mentioned this on the What Bitcoin Did podcast. I had the pleasure of meeting SeedSigner at the Bitcoin Conference in 2025. I also like the SeedSigner wallet for other reasons. On the podcast, he mentioned the SeedSigner idea spun off from the Specter DIY wallet and Michael Flaxman’s idea of creating a wallet with a Raspberry Pi that does not have Wi‑Fi. There are some risks to the SeedSigner, like the Evil Maid Attack and some data‑extraction exploits using long‑range radio waves, but tools like this are excellent additions to a multisig setup.
I got my Specter DIY from Moritz Wietersheim, the founder of Specter Solutions, but he has since stepped away from his role. I met him at Pacific Bitcoin in 2022. I saw him speak about the project and told him I was a fan of Specter Desktop, a wallet that came out before Sparrow Wallet. I fan‑boyed him after his talk and told him I loved that wallet. I told him how I grokked Michael Flaxman’s “10X Your BTC Security” guide during the lockdowns. So he took me to a booth. He showed me how to put the thing together. I literally needed to connect two wires. Then someone tried to shill some shitcoin I nor anyone else can remember. He acted like you would expect a toxic maxi to act. Then he gave me the wallet.
What Are the Risks of Specter DIY
Well, maybe he “hacked the wallet.”
- Maybe the keys are pre‑made (retirement attack). I don’t think this is the case since I verified the software myself.
- Maybe the board is compromised.
- Maybe the entropy is not good enough.
That’s okay. I don’t use this wallet for my life savings. I use it as a backup. I have a wallet using multisig that uses Miniscript. To spend, it requires the TapSigner and the Coldcard Q. After 30 days, I only need the Specter DIY I keep geographically distributed. Specter DIY is one of the only wallets that supports this feature. The Coldcard products also support Miniscript if you install the Edge Firmware.
![Warning: Edge Firmware is for developers and experimenters; the Edge version tracks the latest changes to Bitcoin.]
I used to have a TapSigner in my wallet, and if I lost it… well… that would suck. To be clear, I could recover it, but the TapSigner recovery process is a pain in the mempool. If I send my sats to an address in the same wallet, the clock resets. If I lose one of the wallets—say the TapSigner in my traditional wallet—I will not be able to spend until the time expires. Losing the TapSigner in my wallet was a bigger threat than some Bitcoin OG creating a super‑complex scheme to steal less than a million sats. Even if he did have this diabolical plan, he would need my output descriptor. Honestly, if he is that good, he could get bigger targets.
To be clear, I assign an extremely low probability to this possibility, but you know the motto: Don’t Trust, Verify. For the record, I think Moritz Wietersheim is an honest man.
Thanks for reading.
https://nostree.me/npub1marcl30nnqruvzz7gv075d8xaqvhlexd02gmh6dw7afxxpt2kcvs44xf53