Sample
verify pkg:golang/github.com/cespare/xxhash@v1.1.0
sha256:85143f9d2c3a7444699ce47cdc380d27196d6098e643ba8f5aca77314951a4d0
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
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@1 |
2026-08-21 |
Case
HOW- Goal
- verify pkg:golang/github.com/cespare/xxhash@v1.1.0
- Packages
- Created
- 2026-08-21T01:12:38Z
Contract
- xxhash.Sum64 returns consistent 64-bit hash for byte slice
- xxhash.Sum64String produces identical hash to Sum64 on matching string
- xxhash.Sum64 and Sum64String handle empty input identically
- xxhash.New streaming Digest matches one-shot Sum64 calculation
- xxhash.Digest Reset clears state for subsequent hashing
Files
- PROMPT.md
- csx.json
- go.mod
- go.sum
- main.go
- spec.json
- test/contract.go
Origin Seeder
anonymous