Capsules
Orange snap cases
3D-printed FDM cases that hold a metal washer disc.
Free · US only · No account
Self-custody hardware with zero personal data
A physical kit for durable seed backup practice. Address only — no name, no email. Your order code is the only key to status.
One per address
Hash-enforced limit
Private codes
XXXX-XXXX-XXXX-XXXX
Non-profit
Donation-funded
What’s in the box
Real kit hardware — capsules, washers, and engraver for offline practice.
Hardware
Steel washers
Flat metal you can mark for durable offline backup practice.
Tool
Engraver pen
White barrel, blue grip — mark metal with no app or cloud.
Privacy by design
No name or email. Address used for shipping + one-way hash only.
Track with a code
Coarse status without revealing your street address.
Funded by sats
Donations cover postage and materials. Educational only.
Ready when you are
US address only. One kit per address. About a minute.