Sample
verify pkg:npm/react-is@18.3.1
sha256:99b8bc21829ba50f172db49971e09427fea5f5ce0364d3ef5eb0f594e05acadd
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
linux 24 · ubuntu · glibc 2.39 x64 npm
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/react-is@18.3.1
- Packages
- Created
- 2026-08-21T05:44:37Z
Contract
- isElement correctly identifies React element objects and rejects plain objects or primitives
- isValidElementType validates built-in tags, component functions, classes, and React symbols
- isFragment detects React Fragment elements with react.fragment type
- isForwardRef detects elements created from react.forward_ref component types
- isMemo detects elements created from react.memo wrapped components
- typeOf returns standard React type symbols for elements or undefined for non-elements
Files
- PROMPT.md
- csx.json
- package-lock.json
- package.json
- spec.json
- src/index.js
- test/contract.mjs
Origin Seeder
anonymous