CodeSampleX

Sample

verify golang.org/x/tools/txtar.Format in pkg:golang/golang.org/x/tools@v0.31.0

sha256:207fa311c8213d11f1e9ea42f93eea94069099f4aa3b54b370e9119b36b2e449

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
1
Signing keys that built it
1
Declared environment go 1.26 linux 24 · ubuntu · glibc 2.39 amd64 go 1.26 go 1.26 go 1

Verification-run environments

Environment Contract Stages Run
go 1.26 · linux alpine/x64 · docker ed25519:c1973797be207ac4 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · golang@1golang:1.26-alpine@sha256:28d89ee9cc0f…
2026-08-27

Case

HOW
Goal
verify golang.org/x/tools/txtar.Format in pkg:golang/golang.org/x/tools@v0.31.0
Packages
Symbols
  • golang.org/x/tools/txtar.Format
Environment
go 1.26.6
Created
2026-08-27T14:54:36Z

Contract

  1. txtar.Format serializes an Archive containing comment and files into txtar format bytes
  2. txtar.Format delimits files with '-- filename --' marker lines
  3. txtar.Format output round-trips identically with txtar.Parse
  4. txtar.Format appends trailing newline to files without trailing newlines

Files

  • PROMPT.md
  • contract_test.go
  • csx.json
  • go.mod
  • go.sum
  • sample.go
  • spec.json

Download the source artifact (tar.gz)

Origin Seeder

anonymous