CodeSampleX

Sample

verify pkg:golang/golang.org/x/text@v0.37.0

sha256:734d0b825a1e02ba46449c17227e2fae4c580ae6bf0d9bd96c9a21ca5b9c8c32

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

Operating system
windows 11
Architecture
x64
Package manager
go

Verification-run environments

go 1.26 · linux alpine/x64 · docker PASS
Execution context
go 1.26
Operating system
linux alpine · musl
Architecture
x64
Runtime
go 1.26
Language
go
Package manager
go
Execution
container · docker

CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · golang@1 · 2026-08-18

Case

HOW
Goal
verify pkg:golang/golang.org/x/text@v0.37.0
Packages
Symbols
  • golang.org/x/text/cases.Title
  • golang.org/x/text/cases.Upper
  • golang.org/x/text/cases.Lower
  • golang.org/x/text/language.Make
Created
2026-08-18T17:22:41Z

Contract

  1. cases.Title with English language tag capitalizes words
  2. cases.Upper with Turkish language tag transforms lowercase 'i' to dotted capital 'İ'
  3. cases.Lower with Turkish language tag transforms uppercase 'I' to dotless lowercase 'ı'
  4. cases.Lower with English language tag converts uppercase to lowercase
  5. language.Make produces canonical language tags

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

Verification receipts

  • go 1.26 · linux alpine/x64 · docker PASS
    CONTAINER_RUN compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS golang@1
    ed25519:d91480838ac982c9