01 — Where provin fits
Where provin fits
At every handoff, provin records the relationship between the input received and the output produced. Each branch carries the predecessor record forward as one connected line.
USE CASE 01
Manufacturing · ETL / ELT · multi-service pipelines
Follow a faulty input
to the outputs that need attention
After a defective lot or bad input is found, follow its path through branches and narrow down the outputs that need review.
What happens
The problem is found at the source
A defect is found in one component lot. Its data has already passed through inspection, aggregation, and shipping decisions, branching into several outputs along the way.
The team does not need every log from every system. It needs to see which processes used that input and which outputs sit downstream of it.
The flow in this scenario
02 — What a verifier can check
What a verifier can check
- Traverse declared descendants forward from the faulty input.
- Follow several branches back to the same source.
- Separate outputs that need review from outputs outside the recorded path.
Public E2E coverage
Public E2E: recall confirms forward traversal from a signed input to its declared linear descendants; branching confirms fan-out and filter delivery.
How to read the evidence
The evidence shows the recorded processing path. Root-cause and product-safety decisions remain part of the operating process.
Place verifiable evidence at the data handoff
provin puts receive, verify, process, sign, and emit in the same data flow. The architecture and specifications describe today’s interfaces and implementation boundary.