Verifiable Chain of Custody
Track the complete history of your products from origin to final consumer. Every step recorded and mathematically linked on blockchain.
How It Works
Hash chaining: any alteration is detectable
Each event contains the previous transaction
Altering a single step breaks the chain and invalidates every later one. Chaining does not prevent tampering: it makes tampering detectable when the hashes are recomputed.
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1
Create Batch
Register a product batch with unique ID
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2
Add Events
Each event is linked to the previous one
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3
Verify via QR
Consumer scans QR and sees entire history
Use Cases
Agriculture & Food
From seed to table. Track crops with immutable evidence at every stage.
✓ Field notebooks ✓ Treatments ✓ Geolocation ✓ Quality
Cold Chain & Logistics
Continuous monitoring with IoT data certified minute by minute.
✓ IoT sensors ✓ Temperature ✓ Humidity ✓ GPS
Pharmaceutical
Track medicines from manufacturer to patient. Fight counterfeiting.
✓ Serialization ✓ Compliance ✓ Anti-counterfeiting
Manufacturing
Certify every phase of production. Quality records that cannot be altered.
✓ Materials ✓ Testing ✓ Quality ✓ Shipping
Event Protocol
[PREFIX][VERSION][EVENT_TYPE][BATCH_ID][PREV_TX][EVIDENCE_HASH]| Field | Size | Description |
|---|---|---|
| PREFIX | 4 bytes | App identifier (e.g., TRAC) |
| EVENT_TYPE | 1 byte | 01: Sowing, 02: Harvest... |
| BATCH_ID | 8 bytes | Unique batch ID |
| PREV_TX | 8 bytes | Previous transaction (chain link) |
| EVIDENCE_HASH | 32 bytes | SHA-256 of evidence |
Frequently Asked Questions
Hash Chaining is a technique where each new event includes a reference to the previous transaction. This creates a mathematically linked chain where modifying any step breaks the chain. It is the same principle used by blockchain itself.
The consumer simply scans the QR code on the product. Our system retrieves all associated transactions from the blockchain and validates that the chain is complete and has not been altered. All this is shown in a friendly visual interface.
Pricing depends on volume and specific needs. We offer monthly subscription plans for businesses with volume discounts. Contact our sales team for a customized quote.
For full traceability, yes, API integration is recommended to automate event recording. However, we also offer a web dashboard for manual recording of events for businesses starting with traceability.
Ready to implement traceability?
Contact our team to discuss how to integrate blockchain traceability into your value chain.