Distributed ledgers. We’ll eventually see a scalable , extensible, ledger that will allow people to own their own data. People will stop associating that ledger with p2p payment mechanisms and start seeing it for what it really is – an audit trail.
NEM/BTC/ETH is attempting to track every transaction in the entire history of the currency. This is a good POC but may be overkill. Immutable paper trails are good for many other things – attention, reputation, identity.
We need to augment existing internet protocols to free us from the giants and the information they alone hold about us. What if we held our own information and set permission on who/when/what sections could be accessed. The power belongs to the people, not the ubers, googles, or facebooks.