Methodology
Documentation completeness, chain-of-custody and conservative status labels.
PurityLedger evaluates whether documentation is complete, internally consistent, current and traceable. It does not score product safety, legality, approval or expected outcomes.
Completeness signals
- • Supplier profile and jurisdiction fields
- • Batch number, certificate ID and test date
- • Testing method and lab metadata
- • Document fingerprint/checksum and revision history
Status labels
- • Supplier-uploaded
- • Document received
- • PurityLedger-reviewed
- • Lab-authenticated
- • Third-party test linked
- • Expired, superseded, disputed or retest requested
Red flags
- • Certificate reused across unrelated batch numbers
- • Missing test date or method
- • Lab identity cannot be reconciled
- • Document hash changed without explanation
Ledger-style audit trail
- • Record creation event
- • Document upload event
- • Review status change
- • Retest/dispute resolution event
Important limitation: This record does not certify safety, legality, efficacy, approval, or suitability for human/veterinary use.
PurityLedger provides documentation review, batch record hosting, CoA verification tools and analytical testing coordination only. PurityLedger does not certify any product as safe, effective, legal, approved, or suitable for human or veterinary use. Testing records are batch-specific and do not constitute medical advice, regulatory approval, or endorsement of any supplier or product. Clients and users are responsible for compliance with applicable laws in their jurisdiction.