From appointment letters, completion certificates, and MOUs to identity and qualification credentials: one blockchain solution that issues, shares, and verifies in two forms. broof-type issues directly from the web; MyID-type is built on DID and verifiable credentials (VC) to fit each institution.
PDF and image certificates are hard to confirm as genuine, and issuers keep fielding verification inquiries, reissuance requests, and security operations long after issuance, each certificate needing its own verification system.
Meanwhile, digitization is already the norm: Korea's government e-document wallet carries 481 e-certificate types, with about 20M Gov24 members and 59 connected apps.
A conservative estimate combining per-document issuance, postage, reissuance, and verification labor costs for paper certificates. At 10,000 documents a year, that's roughly KRW 50M for paper versus KRW 11M for broof.
e-certificate types issuable (May 2026)
Gov24 members
connected public/private apps
Source: Ministry of the Interior and Safety, Government e-Document Wallet (dpaper.kr, May 2026).
We solve four problems issuers face again and again, in two forms: broof-type, issued directly from the web, and MyID-type, built on DID and VC and designed around each institution.
Verification inquiries, reissuance, servers, and security operations continue long after issuance.
Recipients of PDF or image certificates struggle to confirm the original is genuine.
Every certificate needs its own verification system to build and maintain.
Printing, distribution, and labor costs add up with every certificate.
The solution handles verification inquiries, reissuance, servers, and security operations; the institution just issues.
A QR code and verification link (broof-type) or a verifiable digital credential (VC, MyID-type) let recipients confirm authenticity instantly.
broof-type runs as a web service and MyID-type connects to identity and credential infrastructure; either way, you skip the separate build and operating burden.
Printing, distribution, and labor costs for paper issuance are replaced by web issuance.
If a fixed format issued quickly is all you need, choose broof-type. If you need DID/VC-based verification that connects into downstream services, choose MyID-type.
| broof type | MyID type | |
|---|---|---|
| Structure | A web-integrated issuance service (SaaS) | DID-based credential infrastructure |
| Form | Web certificate (verified via QR code or link) | Verifiable digital credential (VC) |
| Custom design | Fixed formats, fast to adopt | Designed to each institution’s requirements |
| After verification | The recipient confirms the original | Verification results connect into the next service or step |
| Adoption | Sign up and issue right away | Built and integrated as a project |
| Typical uses | Appointment letters, completion certificates, MOUs, digital badges | Financial real-name checks, identity and qualification credentials, service integration |
| Track record | Launched 2019; first government-committee blockchain appointment letter | ~3.7M users, 91M Jeju Safe Code verifications, first DID real-name check in Korean finance |
