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REQUIRED FOR DPP COMPLIANCE · 2027

Supply Chain
Traceability Layers

The definitive framework for fashion supply chain traceability. What to collect at each tier, how to verify it, what TraceID recommends for each product category, and why the Ripple Model is the only approach that works at scale.

Based on EU ESPR requirements, GRS/GOTS chain-of-custody standards, and TraceID's operational experience across tier-1 to tier-4 fashion supply chains.

IN THIS GUIDE
01The traceability problem02The 4-tier layer framework03What to trace by category04The Ripple Model explained05Chase vs Ripple comparison06Mass balance accounting07TraceID layer recommendations
THE TRACEABILITY PROBLEM

Why most fashion brands cannot verify what they claim

Most fashion brands can confidently name their tier-1 garment manufacturers. Many have a rough idea of their tier-2 fabric suppliers. Almost none can provide verified, evidence-backed data about where their raw materials were grown, spun, or recycled — the tier-3 and tier-4 level that the EU is now requiring for credible DPP claims.

This matters because EU regulators explicitly reject self-reported, unverified claims. A brand cannot state in its DPP that a garment contains "100% organic cotton" without a GOTS certificate linked to the specific bale of cotton used in that production run. The certificate must travel with the material — not sit in a supplier's filing cabinet.

The traceability gap is not a data problem — it's a workflow problem. Brands use the "chase model": periodically sending questionnaires to suppliers, chasing responses for weeks, receiving PDFs that cannot be linked to specific batches or products. Audits fail. The cycle repeats every season.

TraceID's Ripple Model solves this by making data collection a byproduct of how suppliers already work — not an additional reporting task imposed on them.

THE CORE PRINCIPLE

"Trace what you claim. Claim what you can trace." — If you cannot produce a certificate or evidence trail linking a claim to a specific production batch, do not make the claim in your DPP. TraceID enforces this at the point of publication.

THE TRACEABILITY DECISION FRAMEWORK
MUST TRACE
→Materials >5% by weight in the finished garment
→All materials with regulated sustainability claims (organic, recycled)
→Chemical inputs subject to REACH or biocide regulations
→Animal-derived materials (wool, down, leather, silk)
SHOULD TRACE
→Tier-1 and tier-2 suppliers for trims with sustainability claims
→Dyehouses and finishing facilities for chemical declarations
→Packaging materials for PPWR compliance
→Accessories above 5% by weight
CAN SKIP RAW TIER
→Standard commodity zippers (no claims)
→Generic sewing thread (no sustainability claims)
→Basic interlinings with no claims
→Commodity findings (generic buttons, standard labels)
THE 4-TIER LAYER FRAMEWORK

What TraceID tracks at each supply chain tier

Fashion supply chains have four recognised tiers. Each tier requires different data types, different verification standards, and different methods of collection. The Ripple Model handles all four in a single operational workflow.

1
TIER 1
Garment Manufacturing
CMT factoriesFull-package manufacturersCut & sew facilitiesEmbellishment factories
DATA REQUIRED IN TRACEID
·Factory name, address, and GLN identifier
·Production scope (product types, volumes)
·Applicable certifications (WRAP, SA8000, BSCI, Sedex)
·Factory-level worker welfare data (hours, wages, unionisation)
·Environmental compliance (wastewater, energy use)
VERIFICATION REQUIRED

Third-party social audit (SMETA, BSCI, or equivalent). Self-declared data not acceptable for DPP publication.

TRACEABLE IN

All products. No exceptions.

HOW RIPPLE COLLECTS THIS

Factory submits facility registration via WhatsApp or admin portal. TraceID assigns a global supplier ID linked to GS1 GLN.

2
TIER 2
Material Processing & Fabric Manufacturing
Fabric mills (woven & knit)Yarn spinnersDyehousesFinishing facilitiesTrim manufacturers
DATA REQUIRED IN TRACEID
·Facility identity and GLN
·Material batch identifiers linked to specific fabric lots
·Fibre composition per batch (not just product-average)
·Dye and chemical input declarations
·Water and energy consumption per batch
·REACH SVHC substance declarations
·Process certifications (OEKO-TEX, bluesign®, Higg FEM)
VERIFICATION REQUIRED

Batch-level certification from accredited body. Facility-level certificates are necessary but not sufficient — batch linkage is required.

TRACEABLE IN

All garments with fabric, yarn, or trim sustainability claims. Required for DPP carbon and chemical data.

HOW RIPPLE COLLECTS THIS

Mill creates a material batch in TraceID when a production run begins. Batch ID links to tier-1 transformation event when fabric is shipped to CMT factory.

3
TIER 3
Raw Material Processing
Cotton ginsWool scourers and topmakersPolyester chip producersMechanical recyclersChemical recyclersDown processors
DATA REQUIRED IN TRACEID
·Processing facility identity
·Raw material origin (country, region, farm or recycling source)
·Processing method and chemical inputs
·Chain-of-custody certificate (GOTS, GRS, RDS, RWS, RAS)
·Input/output mass balance records
·Controlled blending declarations (for recycled content)
VERIFICATION REQUIRED

Certified chain-of-custody from GOTS, GRS, RDS, RWS, or equivalent scheme. Certificate must be batch-linked, not just facility-level.

TRACEABLE IN

All garments with organic, recycled, traceable animal fibre, or fair trade claims. Required for credible DPP recycled content and origin data.

HOW RIPPLE COLLECTS THIS

Processor records raw material batch origin and uploads chain-of-custody certificate. TraceID links the certificate to the specific yarn or fabric batch downstream.

4
TIER 4
Raw Material Origin
Cotton farmsWool farms and stationsFlax and hemp farmsPET bottle collectorsPre-consumer waste collectorsForest operations (for viscose)
DATA REQUIRED IN TRACEID
·Farm or collection site identity and GPS coordinates (where available)
·Country and region of origin
·Farming system (conventional, organic — with certificate)
·Deforestation compliance (for cellulosics, EUDR scope)
·Farm-level certifications (GOTS Farm, Better Cotton, OCS)
·Harvest batch records
VERIFICATION REQUIRED

Farm-level certification from GOTS, Better Cotton, OCS, RWS, or equivalent. EUDR due diligence statements for cellulosic fibres from 2025.

TRACEABLE IN

Organic cotton, certified wool (RWS, ZQ), traceable linen, cellulosic fibres (viscose/lyocell — EUDR scope), and post-consumer recycled plastics with GRS certification.

HOW RIPPLE COLLECTS THIS

Farm or collector uploads harvest batch data and certificates. TraceID validates against certification database and creates origin record linked to downstream material batches.

TRACEABILITY BY PRODUCT CATEGORY

TraceID's recommended traceability layers by product type

Not all garments need the same depth of traceability. The required depth depends on the claims you make and the materials involved. The table below shows TraceID's recommended minimum traceability depth by product category and claim type.

Product / MaterialTier 1 (Assembly)Tier 2 (Processing)Tier 3 (Raw Material)Tier 4 (Origin)Key CertificatesDPP Claims Unlocked
Conventional cotton garment✓ Required✓ Required——WRAP / SA8000Country of manufacture, fibre content
Organic cotton garment✓ Required✓ Required✓ Required✓ RecommendedGOTS (full chain)+ Organic certified, verified origin
Recycled polyester (rPET)✓ Required✓ Required✓ Required—GRS (chain of custody)+ Recycled content %, post-consumer source
Wool garment (standard)✓ Required✓ Required✓ Required—RWS or ZQ + bluesign+ Animal welfare standard
Certified traceable wool✓ Required✓ Required✓ Required✓ RequiredRWS farm-level + ZQ+ Named farm origin, verified welfare
Viscose / lyocell✓ Required✓ Required✓ Required✓ RequiredFSC / PEFC + EUDR+ Forest source, deforestation-free
Down-filled garment✓ Required✓ Required✓ Required—RDS (Responsible Down Standard)+ Traceability to down processor
Standard zipper / thread✓ Required———OEKO-TEX if claim madeComponent supplier name only
Sustainable trim (with claim)✓ Required✓ Required——GRS or OEKO-TEX+ Sustainability claim for the trim
THE RIPPLE MODEL

Why the Ripple Model is the only approach that scales

The chase model — where brands periodically request data from suppliers — fails at scale for a simple reason: it treats traceability as a reporting task imposed on suppliers, rather than as an operational byproduct of their existing work.

Suppliers resist because the overhead is real and the benefit to them is zero. Data arrives weeks late and cannot be linked to specific production batches. Audits fail because the data was never genuinely collected — it was assembled retrospectively under deadline pressure.

The Ripple Model changes the incentive structure. Instead of asking suppliers to report, TraceID makes it easy for them to push data as they naturally work. When a spinning mill creates a new yarn batch, they record it in TraceID (or via WhatsApp in their own language). When the fabric mill receives that yarn, they confirm receipt and link it to their weaving batch. This continues upstream, creating a verified, real-time chain of custody — as a side effect of normal operations.

THE KEY INSIGHT

Traceability is not a data collection project. It is a workflow redesign. When suppliers push data as they work, traceability becomes a byproduct of operations — not a separate burden. That is the only model that works at tier-2, tier-3, and tier-4 scale.

❌ Chase Model
WhenSeasonally or on demand
DirectionBrand → Supplier (pull)
FormatEmail questionnaire / PDF
LinkageFacility-level only
Latency4–8 weeks typical
VerifiabilitySelf-reported, low
Supplier burdenHigh — separate task
Audit readinessPoor — assembled retrospectively
✓ Ripple Model
WhenContinuously, in real time
DirectionSupplier → Brand (push)
FormatWhatsApp / TraceID portal
LinkageBatch-level, linked
LatencyReal-time
VerifiabilityEvidence-backed, high
Supplier burdenMinimal — ops byproduct
Audit readinessPermanent — always current
MASS BALANCE ACCOUNTING — HOW IT WORKS

Most tier-2 and tier-3 suppliers work with multiple brands simultaneously — meaning the same spinning mill produces yarn for dozens of customers from a single production run. Physical batch separation is commercially unviable.

Mass balance accounting — the standard used by GRS, GOTS, and ISCC — solves this. The mill tracks certified input volumes and certified output volumes across all customers. Any brand's order that draws from certified-origin input material can claim the corresponding certified output — without requiring physical separation.

TraceID implements mass balance accounting natively. Suppliers record total certified input volumes; TraceID allocates certified output claims across brand orders proportionally and generates per-brand chain-of-custody records that satisfy GRS and GOTS audit requirements.

Start tracing your supply chain today.

Tier-1 supplier onboarding takes days. Tier-2 and tier-3 data builds automatically through the Ripple Model. Most brands have a complete tier-1 + tier-2 trace within 4 weeks.

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