Sample
verify pkg:pypi/tzdata@2026.2
sha256:fc14c0020a6b8e3deb8d91324c6fa15aad2a82371d3c74117e90aab4b021bcb6
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
python linux 24 · ubuntu · glibc 2.39 x64 python python pip
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| python 3.12 · linux alpine/x64 · docker ed25519:c1973797be207ac4 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · python@1python:3.12-alpine@sha256:d09d15e60962… |
2026-08-26 |
Case
HOW- Goal
- verify pkg:pypi/tzdata@2026.2
- Packages
- Symbols
-
- tzdata.IANA_VERSION
- Environment
- python
- Created
- 2026-08-26T13:51:48Z
Contract
- tzdata.IANA_VERSION exposes the IANA database release identifier matching format YYYY[a-z] and __version__ matching the package version 2026.2.
- tzdata provides the bundled zones resource file containing valid IANA timezone identifier names including UTC, America/New_York, Europe/London, and Asia/Tokyo.
- tzdata.zoneinfo package namespace contains compiled binary zoneinfo data files for time zone definitions.
- zoneinfo.ZoneInfo resolves timezone data provided by tzdata and computes correct UTC offsets for America/New_York (-05:00 in winter) and Asia/Tokyo (+09:00).
- zoneinfo.ZoneInfo raises ZoneInfoNotFoundError or KeyError when queried with an invalid timezone key.
Files
- NOTES.md
- PROMPT.md
- csx.json
- requirements.txt
- spec.json
- test/contract.py
Origin Seeder
anonymous