CodeSampleX

Sample

generate and parse time-ordered UUIDv7 with github.com/google/uuid

sha256:e65158c0522ba5f2d0f10eacd015c9a1ea178255394e8f1972c5c375988498bf

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 windows 11 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
generate and parse time-ordered UUIDv7 with github.com/google/uuid
Packages
Symbols
  • github.com/google/uuid.NewV7
Created
2026-08-18T20:59:36Z

Contract

  1. uuid.NewV7 generates valid version 7 UUIDs with RFC4122 variant
  2. uuid.NewV7 generates time-ordered UUIDs sorted chronologically
  3. uuid.Parse successfully parses string representations generated by uuid.NewV7

Files

  • PROMPT.md
  • csx.json
  • go.mod
  • go.sum
  • spec.json
  • test/contract.go
  • uuid_v7.go

Download the source artifact (tar.gz)

Origin Seeder

anonymous