CodeSampleX

Sample

verify pkg:golang/github.com/zeebo/blake3@v0.2.4

sha256:00be8d1894090e8f06780b380338e536cf5a142051e030b05991ab5f03d14d30

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 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 pkg:golang/github.com/zeebo/blake3@v0.2.4
Packages
Created
2026-08-28T04:34:26Z

Contract

  1. blake3.Sum256 computes standard 32-byte BLAKE3 digest matching known test vector
  2. blake3.Sum512 computes 64-byte BLAKE3 digest whose prefix matches Sum256
  3. blake3.New implements hash.Hash and incremental writes match Sum256
  4. Hasher.Clone creates an independent clone preserving intermediate state
  5. Hasher.Reset clears accumulated state
  6. blake3.NewKeyed enforces 32-byte key and produces distinct keyed MACs
  7. blake3.DeriveKey derives arbitrary-length subkeys bound to context strings
  8. blake3.Digest provides extendable output seeking and arbitrary-length reading

Files

  • PROMPT.md
  • blake3.go
  • csx.json
  • go.mod
  • go.sum
  • spec.json
  • test/contract.go

Download the source artifact (tar.gz)

Origin Seeder

anonymous