Name the material
Record the species or material type, finish, component, intended product, and the exact claim under review.
Leather sourcing intelligence
From hide
to proof.
Build an evidence-ready sourcing brief, map the records behind each claim, and open the source that defines the standard.
RAW MATERIAL
TANNERY
FINISHED LOT
EVIDENCE TICKET · 04Claim ≠ certificate
Record → scope → date → owner
01 / 04BRIEF → EVIDENCE → SOURCE
The work before the claim
A sourcing brief should not start with a badge.
It should start with the material, the chain, the question, and the evidence needed to answer it. Tannyl structures that first pass without pretending to replace an auditor, laboratory, certification program, or lawyer.
Map the chain
Separate farm or origin, slaughterhouse, trader, tannery, subcontractor, manufacturer, and brand records.
Read the scope
Ask what an audit, certificate, test, transaction record, or policy actually covers—and what it does not.
Write narrowly
Turn the evidence into a dated, qualified sentence instead of a broad “sustainable” conclusion.
A useful output
One brief.
Every missing proof.
Choose the product, sourcing objective, and evidence lanes. Tannyl returns a structured request that your team can print, download, and take into a supplier conversation.
Open the brief builderTANNYL / SOURCING BRIEFLOCAL ONLY
- Material identityType, species, component, finish, intended use
- Chain-of-custody boundaryWhich tiers, lots, transfers, and dates are documented?
- Audit scopeFacility, process, product, transaction, or organization?
- Claim sentenceSpecific benefit, limitation, source, review date
Source desk
Read the governing document—not the marketing shorthand.
Start with Leather Working Group standards, Textile Exchange leather resources, published brand standards, official regulatory updates, and the FTC’s environmental-claims guidance.
Open the reviewed sources →Deliberately not a certification
Tannyl organizes evidence.
It does not award conclusions.
No live supplier profiles. No pay-to-verify badge. No marketplace transactions. No broad green claim. No inference that a facility audit establishes product-level chain of custody.