CodeSampleX

Sample

generate hash-based UUID with custom hasher using github.com/google/uuid.NewHash

sha256:82a587d8b8ab1bbc9d9c4eef604b3bf4cec88d7b2f811c3bbe697412e00bb37a

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 go 1.26 windows 11 x64 go 1.26 go go 1

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 hash-based UUID with custom hasher using github.com/google/uuid.NewHash
Packages
Symbols
  • github.com/google/uuid.NewHash
Environment
go 1.26.5
Created
2026-08-19T07:14:19Z

Contract

  1. uuid.NewHash generates deterministic UUID for given hash algorithm, namespace, data, and version
  2. uuid.NewHash sets the specified UUID version and RFC4122 variant
  3. uuid.NewHash generates identical UUID for same hash, namespace, and data
  4. uuid.NewHash generates distinct UUIDs for different namespaces, data, or hash functions
  5. uuid.NewHash matches standard NewSHA1 and NewMD5 results when given matching hash algorithms and versions

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous