IBM introduces a blockchain to verify the jewelry supply chain | TechCrunch

“Now we can share this [data] in a permissioned network and we can be sure it’s accurate,” he (Jason Kelley, the GM of blockchain services at IBM) said.

The notion of the permissioned blockchain is an important one here. It means that you have to be allowed on the blockchain to participate, and everyone on the blockchain has to agree to let any members on. “That’s what exciting with TrustChain. Each point in the supply chain has bought into the consortium,” he said.

Source: IBM introduces a blockchain to verify the jewelry supply chain | TechCrunch, Ron Miller, April 26, 2018