Many proofs of concept have been developed in recent years, especially in 2017, using blockchain technology. A few application-specific implementations emerged, such as Everledger for diamond tracking and filament for the IoT but are still lacking in various areas.
This seems not too far now as many proofs of concept have already been developed and proved to work; the next stage is to implement these in real-life scenarios. For example, recently, a group of seven banks agreed to build a Digital Trade Chain (DTC) that will simplify the trade finance process.
DTC related information is available at http://www.bankingtech.com/2017/10/ibm-and-eight-banks-unleash-we-trade-platform-for-blockchain-powered-commerce/.
