An important message for the Bitcoin community.
Over the last several days, the community has been shaken by an ongoing security incident involving Coldcard hardware wallets, made by Coinkite. A firmware bug affecting seed generation on certain older devices has been actively exploited, and funds have been lost.
If you have ever generated a seed on a Coldcard device, Coinkite is urging you to move your funds now. Do not delay. Read their official advisory here:
COINKITE Blog
Coldcard Security Advisory
Funds from affected COLDCARD seeds are at risk if the seed lacks 50 independent, private dice rolls and the wallet lacks a strong, unique BIP-39 pa...
In Coinkite CEO Rodolfo Novak's own words: "If you generated a seed using a Coldcard wallet, move your funds now, using our updated best practices, before reading further."
To anyone who has lost funds in this incident, our deepest condolences. Sats are more than numbers on a screen. They are time, work, and belief in a better system.
⚠️ Watch for scams. Events like this always trigger a wave of phishing emails, fake support pages, and fake "recovery" tools. Verify every email. Never enter your seed into a website. Never share your seed with anyone claiming to be from support. Follow verified accounts on X for real-time updates.
Self-custody is the whole point of Bitcoin. Real, direct ownership of your coins, no intermediary. This week is a painful reminder that the tools we use for self-custody have to be trustworthy. That does not change our belief in self-custody. It sharpens it.
We are also formally announcing something we have been working toward for a while: Solo Satoshi now supports the SeedSigner project. The timing this week is an awkward coincidence, not opportunism. We chose to move forward because what happened this week is exactly why we believe in the philosophy behind open-source hardware.
SeedSigner is an open-source, air-gapped Bitcoin signing device. Stateless design (nothing persists after power-off), no WiFi or Bluetooth silicon on the board, and a blank microSD by default so you flash and verify the software yourself. Assembled in the USA and sourced directly from the project's creator.
Learn more about the SeedSigner+:
Solo Satoshi
SeedSigner+ Fully Assembled Kit & Accessories
SeedSigner+ in orange, fully assembled in the USA and shipped same day from Houston, Texas. Air-gapped, stateless Bitcoin signing. Order yours today!
If you have questions or you are not sure whether an email you received is legitimate, comment below or message us directly. Our team is here.
Stack sats safely.
