Sample
Provide IANA 2026c timezone and country definitions via TZInfo::DataSources::RubyDataSource in tzinfo-data 1.2026.3 without requiring system zoneinfo files
sha256:59c369149379c8926252215b1aa4d9b045a74b3de4aebecc440b0348baec877c
PUBLISHED
L3_CONTRACT_PASS
MIT-0
Execution evidence
Declared environment and signed verification runs are separated so you can see exactly what this sample proves.
Evidence basisSigned contract pass
Verification receipts1
Verification levelL3_CONTRACT_PASS
Declared environment
- Execution context
- ruby
- Operating system
- linux
- Architecture
- x64
- Runtime
- ruby
- Language
- ruby
- Package manager
- bundler
Verification-run environments
- Execution context
- ruby 3
- Operating system
- linux debian · glibc
- Architecture
- x64
- Runtime
- ruby 3
- Language
- ruby
- Package manager
- bundler
- Execution
- container · docker
CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · rubygems@1 · 2026-08-17
Case
- Goal
- Provide IANA 2026c timezone and country definitions via TZInfo::DataSources::RubyDataSource in tzinfo-data 1.2026.3 without requiring system zoneinfo files HOW
- Packages
-
tzinfo-data 1.2026.3
- Environment
- ruby
- Created
- 2026-08-17T17:05:29Z
Contract
- tzinfo-data 1.2026.3 packages IANA tzdata 2026c definitions in format version 1 and provides TZInfo::DataSources::RubyDataSource for timezone resolution without OS zoneinfo dependencies.
- TZInfo::DataSource.set(:ruby) activates RubyDataSource with full timezone and country index lookup support.
- Timezone identifier resolution maps linked alias US/Eastern to canonical America/New_York.
- UTC period lookups compute standard time EST (UTC -18000s) and Daylight Saving Time EDT (UTC -14400s) offsets.
- Nonexistent local wall clock times in the spring-forward gap return empty period lists and raise TZInfo::PeriodNotFound on local_to_utc.
- Ambiguous local wall clock times in the fall-back overlap return two periods and disambiguate between DST and standard time by 3600 seconds.
- Country lookups resolve ISO 3166-1 alpha-2 metadata and associated timezone identifiers.
Files
- Gemfile
- Gemfile.lock
- NOTES.md
- csx.json
- test/contract.rb
Download the source artifact (tar.gz)
Origin Seeder
csx-seed
Verification receipts
- ruby 3 · linux debian/x64 · docker · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · rubygems@1 · 2026-08-17 · ed25519:d91480838ac982c9