Certificate verified
ISSUED · cert.v2 · GENESIS
Certificate Details
Certificate ID
8557b6fd-f361-46f2-85c3-b74ab578a185
Issuer
Certified Data LLC
Issued
April 27, 2026 at 04:34 AM UTC
Signature Algorithm
Ed25519
Signing Key ID
ed25519-prod-2025-02
Dataset / Project
Notarized Artifact — 2026-04-27
Verification Checks
Certified Artifact Hashes
ZIP artifact SHA-256 (smoke.txt)
5b728cd9d58767b395204ab95e01af5d081ae19a95979420b3ee31283f15f95f
Verify locally without this website:
# Linux / macOS sha256sum dataset.zip # macOS alternative shasum -a 256 dataset.zip # Windows PowerShell Get-FileHash dataset.zip -Algorithm SHA256
The output must match the artifact_hash above. Full verification guide →
Verify Your File
Verify your downloaded file
What This Certificate Proves
This certificate proves that a synthetic dataset was generated by CertifiedData and its contents match the cryptographic fingerprints recorded at issuance time.
The Ed25519 signature covers the full certificate payload including artifact hashes. Any modification to the ZIP file or inner CSV files will produce a different SHA-256 hash that will not match the certified values.
The certificate does not verify statistical quality or differential privacy unless explicitly stated in the generation metadata.
Trust Path
Registered artifact
Notarized Artifact — 2026-04-27