A car dealer wants to keep details about customer's car orders private, whilst recording evidence of the car order to reduce the possibility of them being refuted by any party.
The customer selects the model they want to purchase.
The customer selects the engine type.
The customer selects the colour.
The inflormation is sent to nChain Event where it is encoded into a fingerprint.
Only the fingerprint is written to the blockchain, the original information is kept hidden and private.
nChain Event returns the location where the fingerprint is held on the blockchain.
Anyone with the original car order details, typically the car dealer, the purchaser and the auditor, can verify † the order content and timestamp. In the case of any dispute, that information can be shared with the moderator / mediator.
The expected result is that the car order matches what is on the blockchain. Or, an incorrect item (example: wrong colour) explicitly does not match what is on the blockchain.
An unknown result implies that the local data has been tampered with, or the evidence has not been committed to the blockchain.
Benefits
Transparency, proof of publishing what and when.
Private details are kept private and hidden.
Returns a location which the can dealer can distribute to auditors/users.
Anyone with the original data can verify that its fingerprint is at the location.
Note: A Car Dealership demo application for nChain Event is available from the Product Suite Platform. See here.
