- traces from purpose to specification to design to implementation
- records of testing
- what the test was, and what it verifies
- linked to specification and implementation artifacts
- testing procedure used
- record of the execution
- pass/fail result, and log of problems
- records of analysis
- what it was to verify
- methodology
- output of analysis
- pass/fail result, and log of problems
- historical evidence from earlier versions
- any evidence is specific to a version of purpose, specification,
and implementation (or design); invalidated after any of those
change