Blockchain Explained: The rise of private blockchains
What companies are using private blockchains today and why?
Walmart has developed a blockchain system based on Hyperledger Fabric to trace the provenance of their products. The blockchain allows suppliers to upload certificates of authenticity to the ledger securely, bringing more trust to a system and enabling the company to trace products back to source within seconds rather than days.
After successful trials with two products, the company is looking to roll it out further. Like other private blockchains, Walmart’s traceability system does require its suppliers to participate in the system to ensure its veracity, but the company is large enough to impel them to comply.
De Beers has launched a ‘secure and immutable trail’ using a private blockchain called Tracr, to verify the authentici...