IDG Contributor Network: Why Accenture broke the blockchain with IBM's help

You thought blockchains were distributed, public, time-stamped and persistent. Guess what? They still are.Private blockchains introduce a trusted intermediary
Accenture is suggesting that permissioned blockchains will benefit from the ability to change transactions — perform “do-overs.” A permissioned blockchain is a network where the participants can restrict who can participate in the consensus mechanism of the blockchain’s network. A network wh