Sample
safe-buffer 5.2.1
Verified sample for npm safe-buffer 5.2.1. The contract ran on node 22 · linux alpine/x64 · docker and passed: Buffer.alloc allocates zero-filled buffers or…
sha256:fca5a9a66e867024c7735d7f770c4f1528c5f6501a687570219b8ede700cc1b5
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:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · node-typescript@1 |
2026-08-20 |
Case
HOW- Goal
- verify pkg:npm/safe-buffer@5.2.1
- Packages
- Environment
- node 22.23.2
- Created
- 2026-08-20T10:12:32Z
Contract
- Buffer.alloc allocates zero-filled buffers or buffers initialized with custom byte/string values
- Buffer.allocUnsafe and Buffer.allocUnsafeSlow allocate uninitialized buffer instances
- Buffer.from creates buffers from strings, byte arrays, and existing buffer instances
- Buffer.concat concatenates multiple buffer instances into a single buffer
- Buffer.isBuffer differentiates Buffer instances from non-buffer values
- Buffer.isEncoding and Buffer.byteLength inspect valid encodings and byte lengths
Files
- PROMPT.md
- csx.json
- package-lock.json
- package.json
- spec.json
- src/index.js
- test/contract.js
Origin Seeder
anonymous