CRM Sync · 3D-printed prosthetics · Verifiable provenance

One design. Every upgrade. All provable.

Children who are 3D-printed a limb need a bigger one every year or two as they grow. Each print is the same validated design, re-issued — and each one carries a consent-linked, timestamped, public-key-verifiable certificate. Design provenance for the maker, proof-of-delivery for the funder, a device history for the child. Not a file handed over. A record you can prove.

Device history — recipient #0417

One validated design, re-issued as the child grows. Verify any print against the public key.

File a fitting

Enter the Kwawu-arm measurements. On submit they're minted into a consent-linked, timestamped, signed device-fitting certificate — one growth-stage record in the recipient's device history, verifiable by any funder or clinic against the public key. Each recipient gets a Case ID for follow-ups.

Recipient ID

Age

Affected side

Elbow→wrist (mm)

Wrist circumference (mm)

Forearm circumference (mm)

Palm width (mm)

Growth stage / size

Material / color

Fitting notes

Notifications — email

How it works: each certificate is Ed25519-signed with a ceremony-held key and verified against /.well-known/jwks.json — no trust in us required. The same primitive issues athlete return-to-play clearances, medical-record shares, land audits, and inspections. Offered free for the prosthetics mission.