CodeSampleX

Sample

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

sha256:ef45ad1a3c1b03e5f41ea67ccb089e5d1e2e6c1d661f758b90a589250be2bc38

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
verify pkg:golang/github.com/jackc/pgx/v5@v5.10.0
Packages
Symbols
  • github.com/jackc/pgx/v5.CopyFromFunc
  • github.com/jackc/pgx/v5.CopyFromRows
  • github.com/jackc/pgx/v5.CopyFromSlice
  • github.com/jackc/pgx/v5.CopyFromSource
Environment
go 1.26.5
Created
2026-08-18T21:25:39Z

Contract

  1. pgx.CopyFromRows wraps raw row matrix into CopyFromSource with sequential Next and Values access
  2. pgx.CopyFromRows yields false on Next after all rows are consumed without errors
  3. pgx.CopyFromSlice generates row values from index generator function for specified length
  4. pgx.CopyFromSlice records error in Values and exposes it via Err when index generator fails
  5. pgx.CopyFromFunc streams row values sequentially until receiving nil row and nil error
  6. pgx.CopyFromFunc terminates iteration on Next and exposes error via Err when stream generator fails

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