Sample
go.opentelemetry.io/otel v1.28.0: HeaderCarrier combined with TraceContext extracts the first traceparent header instead of rejecting multiple traceparents per W3C specification.
Verified sample for golang go.opentelemetry.io/otel v1.28.0: HeaderCarrier combined with TraceContext extracts the first traceparent header instead of…
sha256:e10aef8833bfae44ce90347d18a34a9caf8140393a51b1a31dd6d4e1803b1742
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 go modules
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 |
2026-08-17 |
| 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
- HeaderCarrier combined with TraceContext extracts the first traceparent header instead of rejecting multiple traceparents per W3C specification.
- Packages
- Symbols
-
- propagation.TraceContext
- propagation.HeaderCarrier
- Environment
- go
- Created
- 2026-08-17T06:57:23Z
Contract
- Extracting from a HeaderCarrier with two traceparent headers yields the SpanContext of the first header rather than an invalid, empty context.
- assert that the extracted SpanContext is valid.
- assert that the extracted TraceID matches the first header's trace ID.
Files
- NOTES.md
- csx.json
- go.mod
- go.sum
- main_test.go
- test_slice.go