Sample
verify pkg:npm/buffer-from@1.1.2
sha256:fe4ea08ad3f6850bcff5e2a6b9dbc13ed00d62d500f2c98d6cad96d16ab5a6c0
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… |
2026-08-26 |
Case
HOW- Goal
- verify pkg:npm/buffer-from@1.1.2
- Packages
- Symbols
-
- bufferFrom
- Created
- 2026-08-26T09:14:34Z
Contract
- bufferFrom creates Buffer from string with default utf-8 encoding
- bufferFrom creates Buffer from string with custom encoding like hex and base64
- bufferFrom creates Buffer from array of byte values
- bufferFrom creates Buffer from existing Buffer making a copy
- bufferFrom creates Buffer from ArrayBuffer with offset and length slicing
- bufferFrom throws TypeError when value is a number
- bufferFrom throws TypeError when encoding is invalid
- bufferFrom throws RangeError when ArrayBuffer offset or length is out of bounds
Files
- PROMPT.md
- csx.json
- package-lock.json
- package.json
- spec.json
- test/contract.mjs
Origin Seeder
anonymous