CodeSampleX

Sample

verify pkg:golang/github.com/jackc/pgx/v5@v5.10.0

sha256:13a60aa54bce4bb7c87d361a3000af49f4d88323bab794e512b371ec0a001dec

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
verify pkg:golang/github.com/jackc/pgx/v5@v5.10.0
Packages
Created
2026-08-19T08:20:03Z

Contract

  1. pgtype.Time represents PostgreSQL time values with Microseconds and Valid fields
  2. pgtype.Time implements driver.Valuer returning formatted time string for valid times and nil for SQL NULL
  3. pgtype.Time implements sql.Scanner parsing time strings and handling nil values as invalid
  4. pgtype.Time implements ScanTime and TimeValue for native conversions
  5. pgtype.Time encodes and decodes in text and binary wire formats using pgtype.Map
  6. sample helpers provide structured time conversions, formatting, parsing, and wire serialization

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