Short, practical essays on why Better Wallet Pi centers Solana, how Keystone UR fits an offline workflow, and where the prototype still needs scrutiny.
Journal
Product notes, security decisions, and build logs for the wallet. Solana and Keystone UR framing are the through-line because they keep the offline air-gapped flow.
Animated `ur:sol-sign-request` / `ur:sol-signature` frames map cleanly to camera-in, display-out. Better Wallet Pi uses that shape to keep signing offline without hiding the handoff from the person approving it.
The useful part of being offline is not the theatre. It is the boring, repeatable fact that every transaction crosses a visible human checkpoint.
Commodity hardware makes the design approachable and auditable. It also means the security story has to be plain about what has not been hardened yet.