Sample
verify pkg:npm/%40sindresorhus/is@4.6.0
sha256:03b581aafcbb688b90aa8a60d0c064d39fe8f0926ad865489fa867b9f3540cf3
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
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/%40sindresorhus/is@4.6.0
- Packages
- Environment
- node 22.23.2
- Created
- 2026-08-21T09:24:18Z
Contract
- is returns the correct type name string for primitives and objects
- is.string, is.number, is.boolean, is.plainObject, and is.array return true for matching types and false otherwise
- is.nullOrUndefined returns true only for null and undefined
- is.nonEmptyString and is.inRange correctly validate string content and numeric boundaries
Files
- PROMPT.md
- csx.json
- package-lock.json
- package.json
- spec.json
- src/index.js
- test/contract.js
Origin Seeder
anonymous