Sample
ramsey/uuid 4.9.3: Generate deterministic name-based UUIDv3 and UUIDv5 from UUID namespaces, reject raw byte and non-UUID namespace strings, and verify RFC 4122 binary hashing
Verified sample for composer ramsey/uuid 4.9.3: Generate deterministic name-based UUIDv3 and UUIDv5 from UUID namespaces, reject raw byte and non-UUID…
sha256:abfb7d13dcdf1a760a3367e37fc213260b40a0c2b710dad231345f6e45604cea
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
- 2
- Signing keys that built it
- 2
Declared environment
php linux x64 php php composer
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| php 8 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · composer@1 |
2026-08-16 |
| php 8 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · composer@1 |
2026-08-18 |
Case
HOW- Goal
- Generate deterministic name-based UUIDv3 and UUIDv5 from UUID namespaces, reject raw byte and non-UUID namespace strings, and verify RFC 4122 binary hashing
- Packages
- Symbols
-
- Ramsey\Uuid\Uuid::uuid5
- Ramsey\Uuid\Uuid::uuid3
- Ramsey\Uuid\Uuid::NAMESPACE_DNS
- Ramsey\Uuid\Uuid::NAMESPACE_URL
- Ramsey\Uuid\Uuid::NIL
- Ramsey\Uuid\Exception\InvalidUuidStringException
- Environment
- php
- Created
- 2026-08-16T08:51:32Z
Contract
- Uuid::uuid5(Uuid::NAMESPACE_DNS, 'example.com') generates deterministic UUIDv5 'cfbff0d1-9375-5685-968c-48ce8b15ae17' matching both string constant and UuidInterface namespace arguments
- Uuid::uuid5 rejects arbitrary non-UUID namespace strings and 16-byte raw binary with InvalidUuidStringException
- RFC 4122 requires concatenating 16 binary network bytes of namespace with name, differing completely from naive sha1 string concatenation
- Uuid::uuid3 generates MD5-based UUIDv3 with version nibble 3, distinct from SHA-1 UUIDv5 for the identical namespace and name
- Name-based UUIDs reject time-based getDateTime() calls with UnsupportedOperationException
Files
- NOTES.md
- composer.json
- composer.lock
- csx.json
- test/contract.php