CodeSampleX

Sample

verify scrypt.Key in pkg:golang/golang.org/x/crypto@v0.22.0

sha256:bff082b4b2b10726cd82efaace74fe1724233c0d933244c317767ea86a8ab2c5

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 linux 24 · ubuntu · glibc 2.39 x64 go

Verification-run environments

Environment Contract Stages Run
go 1.26 · linux alpine/x64 · docker ed25519:c1973797be207ac4 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · golang@1golang:1.26-alpine@sha256:28d89ee9cc0f…		 2026-08-28

Case

HOW
Goal
verify scrypt.Key in pkg:golang/golang.org/x/crypto@v0.22.0
Packages
Symbols
  • scrypt.Key
Created
2026-08-28T09:07:40Z

Contract

  1. scrypt.Key derives deterministic key bytes matching the requested key length
  2. scrypt.Key produces identical derived keys for identical password, salt, and parameters
  3. scrypt.Key produces different derived keys for different passwords with identical salt and cost parameters
  4. scrypt.Key produces different derived keys for different salts with identical password and cost parameters
  5. scrypt.Key produces different derived keys when cost parameter N is varied
  6. scrypt.Key returns error when N is less than or equal to 1 or not a power of 2
  7. scrypt.Key returns error when parameters r and p exceed limit (r * p >= 1<<30)

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