Intertwined Blockchains
Current implementation of blockchain involve well known parties that are trusted even off-the-blockchains. They have earned the trust of their customers over a long period of time, sometimes through decades of service and operations. Hence, private blockchains containing these trusted parties can flourish. What about blockchains created by not-so-well-known parties. Read about a potential solution called Intertwined Blockchains at http://www.aicubicle.com/p/ai-machine-learning-ideas.html