CodeSampleX

Sample

verify pkg:golang/github.com/dgraph-io/badger/v2@v2.2007.4

sha256:507a974d1c7db9e78d0c0620199f0eeff7211dc93a03ace0bf9d928963505c0b

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/dgraph-io/badger/v2@v2.2007.4
Packages
Created
2026-08-21T01:57:59Z

Contract

  1. badger.Open creates and opens a database directory with DefaultOptions
  2. badger.DB.Update executes read-write transaction to set key-value entries
  3. badger.DB.View retrieves stored values via Txn.Get and Item.ValueCopy
  4. badger.DB.View returns badger.ErrKeyNotFound when querying non-existent keys
  5. badger.Iterator traverses keys matching a specified prefix in lexicographical order
  6. badger.DB.Update deletes existing keys using Txn.Delete

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