Sample
verify pkg:npm/%40types/react@19.2.18
sha256:01de88e5ccf32863cc444e4be4b0c960d2b5f45a6e64b064b258adbe73a64870
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
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@1node:22-alpine@sha256:c610fcdfb1d5… |
2026-08-23 |
Case
HOW- Goal
- verify pkg:npm/%40types/react@19.2.18
- Packages
- Created
- 2026-08-23T15:05:56Z
Contract
- package manifest specifies index.d.ts type declarations, ts5.0 typesVersions fallback, and MIT license
- declares useActionState hook signatures supporting synchronous and asynchronous action handlers with optional payload
- declares useOptimistic hook signatures with optional state reducer for optimistic UI updates
- declares use hook and Usable union type supporting ReactPromise and Context unwrapping
- declares Activity component and ActivityProps interface for offscreen and activity boundary rendering
- declares cache function and cacheSignal API for per-request memoization and signal tracking
Files
- PROMPT.md
- csx.json
- package-lock.json
- package.json
- spec.json
- test/contract.mjs
Origin Seeder
anonymous