FF2KHardware, code & protocol
Guest technical desk

Technical
Corner

Field reports and deep dives from builders, maintainers, researchers, and security practitioners.

On the bench

Original technical contributions and carefully attributed guest reprints, with editorial material kept clearly separate.

The FF2K character in a noir newsroom beside a tabletop of DIY bitcoin signing devices.
Hardware · FOSS · Self-custody

The DIY Signing Device Revolution is Just Beginning

The Specter DIY, SeedSigner, and Krux teams met in São Paulo to hand off shared infrastructure, compare strengths, and begin a deeper phase of collaboration.

The open lanes

Hardware

Builds, devices, components, supply chains, and the physical edges of trust.

Code

Libraries, implementations, developer practice, and open-source collaboration.

Protocol

Specifications, interoperability, consensus, and the tradeoffs beneath the interface.

Security

Threat models, custody, privacy, failure analysis, and defenses that survive contact.