B1
Solution design
Mapping a use case to Ecosystems and schemas, with the Vesta, Verandia, CEXA and BHI patterns.
In the tracks: Solutions Consultant, Pre-sales.
This module is an outline: the objectives, sections and assessment are agreed; the material is being written by the Showcase and Certification Working Group.
Outline. The material of this module is being written by the Showcase and Certification Working Group. The objectives, outline and assessment below are the agreed scope for program version 2026.1.
8 class hours. Assessed by: case study.
Learning objectives
After this module you can:
- Map a use case to ecosystems, schemas, roles, onboarding modes and fees, and justify each choice.
- Reuse the four playground patterns (Vesta, Verandia, CEXA, BHI) and know when each applies.
- Decide what stays off chain, what is a credential, what is an accreditation, and what is a digest.
- Write a solution design document a buyer and an engineer can both read.
Prerequisites
C1, C2, C3, C4.
Outline
1. Method
From actors and claims to schemas; from authority to ecosystems and validators; from risk to modes, periods and slashing; from volume to fees.
2. The four patterns
Vesta (a service proves itself); Verandia (login and age with a government-style credential); CEXA (reusable KYC and KYB across exchanges, controller as sole issuer); BHI (badges and sector accreditation).
3. Boundaries
Data minimization; what never goes on chain; where fiat and off-chain contracts fit; integrating with existing identity providers.
4. The design document
Template: context, actors, trust questions, ecosystems and schemas, roles, fees, rollout, risks; diagrams that match the playground's.
Assessment
Case study: a design document for a use case drawn by the certificator, graded against the rubric.
Reading list
Playground use cases and their diagrams. docs.verana.io: Understand (all). The Verana use-case analyses published by the Foundation.