Sample
go.opentelemetry.io/otel/trace v1.45.0: SpanFromContext never returns nil on untraced contexts but yields invalid non-recording spans whose IDs format to 32-character and 16-character zero strings rather than empty strings, RecordError does not set error status, and NewSpanContext drops all fields if either TraceID or SpanID is zero
Verified sample for golang go.opentelemetry.io/otel/trace v1.45.0: SpanFromContext never returns nil on untraced contexts but yields invalid non-recording…
sha256:2def692d5f3bfcef049fe24c06470937e1e7fafec85ed2219eb5c0dd894b2597
This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured.
How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people.
MIT-0
Execution evidence
The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.
- Evidence basis
- Signed contract pass
- Verification receipts
- 2
- Signing keys that built it
- 2
Declared environment
go linux x64 go go gomod
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| go 1.26 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · golang@1 |
2026-08-16 |
| go 1.26 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · golang@1 |
2026-08-18 |
Case
HOW- Goal
- SpanFromContext never returns nil on untraced contexts but yields invalid non-recording spans whose IDs format to 32-character and 16-character zero strings rather than empty strings, RecordError does not set error status, and NewSpanContext drops all fields if either TraceID or SpanID is zero
- Packages
- Symbols
-
- go.opentelemetry.io/otel/trace.SpanFromContext
- go.opentelemetry.io/otel/trace.ContextWithSpan
- go.opentelemetry.io/otel/trace.ContextWithRemoteSpanContext
- go.opentelemetry.io/otel/trace.WithNewRoot
- go.opentelemetry.io/otel/trace.NewSpanContext
- go.opentelemetry.io/otel/trace.TraceIDFromHex
- go.opentelemetry.io/otel/trace.SpanIDFromHex
- go.opentelemetry.io/otel/trace.Span.RecordError
- Environment
- go
- Created
- 2026-08-16T07:51:56Z
Contract
- assert SpanFromContext returns non-nil noopSpan with IsRecording false and invalid SpanContext on untraced context
- assert invalid TraceID and SpanID format to fixed-length zero strings instead of empty strings
- assert ContextWithSpan with nil does not clear span and still returns non-nil noopSpan
- assert RecordError creates exception event but leaves span status code Unset without explicit SetStatus
- assert TraceIDFromHex and SpanIDFromHex return errors on all-zero hex strings
- assert NewSpanContext returns invalid empty SpanContext when either TraceID or SpanID is missing or zero
- assert ContextWithRemoteSpanContext forces IsRemote true on non-recording span context
- assert Tracer.Start inherits parent TraceID by default but generates fresh TraceID when WithNewRoot is specified
Files
- NOTES.md
- csx.json
- go.mod
- go.sum
- trace_test.go