CodeSampleX

Sample

verify pkg:golang/golang.org/x/sys@v0.30.0

sha256:5745576ea37753c84afcb62a385f13a7f6aca715600029853b378c8aafcc7f9d

Publication state. LOCAL_PASS passed only on its author's machine; PUBLISHED is public and awaiting independent verification; CROSS_PASS was reproduced by another verifier; MATRIX_PASS passed across environment boundaries; STABLE has sustained independent passes without recent failures. Evidence strength. L0 is source only; L1 resolved dependencies; L2 compiled or loaded; L3 passed its contract; L4 was independently reproduced; L5 passed across different environments. MIT-0

Execution evidence

Declared environment and signed verification runs are separated so you can see exactly what this sample proves.

Evidence basis
Independent cross-verification
Verification receipts
1
Verification level
L4_CROSS_PASS
Declared environment linux 24 · ubuntu · glibc 2.39 x64 go

Verification-run environments

Environment Contract Stages Run
go 1.26 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · golang@1
2026-08-19

Case

HOW
Goal
verify pkg:golang/golang.org/x/sys@v0.30.0
Packages
Created
2026-08-19T17:54:00Z

Contract

  1. unix.Gettimeofday retrieves current time of day as a Timeval structure with positive seconds
  2. unix.Getppid retrieves parent process identifier matching os.Getppid
  3. unix.Access verifies file accessibility permissions on an existing file
  4. unix.ByteSliceFromString converts a Go string into a null-terminated byte slice

Files

  • PROMPT.md
  • csx.json
  • go.mod
  • go.sum
  • main.go
  • spec.json
  • test/contract.go

Download the source artifact (tar.gz)

Origin Seeder

anonymous