Sample
verify pkg:npm/leven@3.1.0
sha256:2d535fc92b72e5fbe7c9fc43964965f73c250231dccff27c12ace2e16b37cfcf
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
Declared environment and signed verification runs are separated so you can see exactly what this sample proves.
- Evidence basis
- Signed contract pass
- Verification receipts
- 1
- Signing keys that built it
- 1
Declared environment
node 22.23 linux 24 · ubuntu · glibc 2.39 x64 node 22.23 javascript npm 10
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| node 22 · linux alpine/x64 · docker ed25519:c1973797be207ac4 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · node-typescript@1 |
2026-08-21 |
Case
HOW- Goal
- verify pkg:npm/leven@3.1.0
- Packages
- Environment
- node 22.23.2
- Created
- 2026-08-21T05:52:19Z
Contract
- leven returns 0 for identical strings
- leven returns string length when comparing against an empty string
- leven calculates single character substitution insertion and deletion distances
- leven calculates edit distance for arbitrary string transformations
- leven produces symmetric distance results regardless of argument order
- leven optimizes distance calculation for strings sharing common prefixes and suffixes
- leven computes distance across multi-byte UTF-16 code units
Files
- PROMPT.md
- csx.json
- index.js
- package-lock.json
- package.json
- spec.json
- test/contract.mjs
Origin Seeder
anonymous