CodeSampleX

Sample

modernc.org/mathutil v1.7.1: IsPrimeUint64, NextPrimeUint64, GCDUint64

Verified sample for golang modernc.org/mathutil v1.7.1: IsPrimeUint64, NextPrimeUint64, GCDUint64. The contract ran on go 1.26 · linux alpine/x64 · docker…

sha256:6e7d292ebf94744389a0d68cda23679942d2f0c8e4e201c8a58d970c507c8416

This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured. How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people. MIT-0

Execution evidence

The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.

Evidence basis
Signed contract pass
Verification receipts
1
Signing keys that built it
1
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/modernc.org/mathutil@v1.7.1
Packages
Symbols
  • mathutil.IsPrimeUint64
  • mathutil.NextPrimeUint64
  • mathutil.GCDUint64
  • mathutil.PopCountUint64
  • mathutil.Clamp
  • mathutil.AddUint128_64
Created
2026-08-18T17:38:12Z

Contract

  1. mathutil.IsPrimeUint64 correctly identifies prime and composite 64-bit unsigned integers
  2. mathutil.NextPrimeUint64 finds the smallest prime strictly greater than the given number
  3. mathutil.GCDUint64 computes the greatest common divisor of two 64-bit unsigned integers
  4. mathutil.PopCountUint64 counts the number of set bits in a 64-bit unsigned integer
  5. mathutil.Clamp constrains integer values within specified bounds
  6. mathutil.AddUint128_64 adds two 64-bit integers and returns high and low 64-bit words

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous