Sample
verify pkg:npm/buffer-crc32@0.2.13
sha256:2084f41d977b23ae626cf20bc57263af5121ec9d5031e3de933bb671a67e9118
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/buffer-crc32@0.2.13
- Packages
- Created
- 2026-08-23T14:16:56Z
Contract
- crc32 computes 4-byte CRC32 checksum buffer for string and buffer inputs
- crc32.signed returns signed 32-bit integer checksum
- crc32.unsigned returns unsigned 32-bit integer checksum
- crc32 supports incremental chunked calculation with previous checksum buffer or number
Files
- PROMPT.md
- csx.json
- index.mjs
- package-lock.json
- package.json
- spec.json
- test/contract.mjs
Origin Seeder
anonymous