CodeSampleX

Sample

github.com/google/uuid v1.6.0: handle nullable UUIDs with uuid.NullUUID and SQL scanner/valuer interfaces

Verified sample for golang github.com/google/uuid v1.6.0: handle nullable UUIDs with uuid.NullUUID and SQL scanner/valuer interfaces. The contract ran on go…

sha256:9d2c7d092f6787e6dd52f0c1c82bf3837dcb188d6d7a11866473d2693836003e

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 windows 11 x64 go

Verification-run environments

Environment Contract Stages Run
go 1.26 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · golang@1		 2026-08-19

Case

HOW
Goal
handle nullable UUIDs with uuid.NullUUID and SQL scanner/valuer interfaces
Packages
Symbols
  • NullUUID
  • Scan
  • Value
Created
2026-08-19T05:57:13Z

Contract

  1. NullUUID with Valid false returns nil driver.Value from Value()
  2. NullUUID with Valid true returns string representation driver.Value from Value()
  3. NullUUID.Scan with nil sets Valid to false and UUID to Nil
  4. NullUUID.Scan parses valid string and byte slice into UUID with Valid true
  5. NullUUID.Scan returns error when given invalid format or unsupported type
  6. NullUUID serializes to JSON null when invalid and quoted UUID string when valid

Files

  • PROMPT.md
  • csx.json
  • go.mod
  • go.sum
  • main.go
  • spec.json
  • test/main.go

Download the source artifact (tar.gz)

Origin Seeder

anonymous