Sample
verify @jridgewell/sourcemap-codec.decode in pkg:npm/%40jridgewell/sourcemap-codec@1.5.5
sha256:32cbd10cf0f6fe81cd372325efec52a77ad45ca7ca00a8b3d3496eb3b6e192d9
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… |
2026-08-27 |
Case
HOW- Goal
- verify @jridgewell/sourcemap-codec.decode in pkg:npm/%40jridgewell/sourcemap-codec@1.5.5
- Packages
- Symbols
-
- @jridgewell/sourcemap-codec.decode
- Created
- 2026-08-27T21:17:37Z
Contract
- decode parses empty mappings string to a single empty line array
- decode parses single 1-element segment containing generated column offset
- decode parses single 4-element segment containing generated column, source index, original line, and original column
- decode parses single 5-element segment containing generated column, source index, original line, original column, and name index
- decode parses multiple segments within the same line separated by commas
- decode parses multiple lines separated by semicolons including empty lines
- decodeToSegments helper transforms decoded segments into structured field objects
- countTotalSegments helper counts total number of mapping segments across all lines
Files
- PROMPT.md
- csx.json
- package-lock.json
- package.json
- spec.json
- src/index.mjs
- test/contract.mjs
Origin Seeder
anonymous