# Oil & gas use cases

> Keep contractor credentials, inspection reports, and supplier statements linked to their source.

Canonical page: https://www.truthlocks.com/industries/oil-gas
Category: Industry & infrastructure

Operational teams receive evidence from a wide network of contractors and suppliers. Signed records support document checks and review history alongside your established engineering and safety processes.

## Field contractors: Trace a contractor’s training evidence

Training documents are checked repeatedly as contractors move between approved assignments.

### What to record

Collect supported signed credentials and record the issuing source, assignment reference, and reviewer’s assessment outcome.

### What to review

Check credential source and status alongside the site’s independent competency and authorization requirements.

### The outcome

A documented credential review for the contractor’s proposed assignment.

## Asset integrity teams: Identify the inspection report used in a review

An amended inspection report may be confused with an earlier working version.

### What to record

Record the report fingerprint, asset reference, inspecting source, version, and the responsible technical review event.

### What to review

Compare the report under consideration with the signed version and let qualified staff assess the technical findings.

### The outcome

A clear evidence reference for the technical team’s recorded review.

## Materials & equipment supply: Keep material declarations connected to a purchase

Material certificates and supplier declarations can arrive separately from purchasing records.

### What to record

Link document fingerprints, supplier identity references, material identifiers, and the procurement review outcome.

### What to review

Check the submitted versions and perform physical and technical assurance through the established supply process.

### The outcome

A source and version history for the material evidence a buyer received.

## Before you begin

Select approved administrative records and assess data-sharing requirements. Verification of a record does not establish equipment safety or authorize operational activity.

## Relevant capabilities

- [Verification](https://www.truthlocks.com/product/verification)
- [Action receipts](https://www.truthlocks.com/product/receipts)
- [Procurement workflows](https://www.truthlocks.com/product/procurement)

These are practical workflow examples, not certification claims or a record of customer deployments.