Beijing’s new big data marketplace has used blockchain technology for the development of a new form of digital trading contract. The Beijing International Big Data Exchange (BIBDE) launched the blockchain-based “Digital Transaction Contract” (??????) on 12 November, which combines the exchange’s “oceanic volumes of data, advanced technology and compliance protections.” “The dynamic transaction ledger created on the basis of the blockchain provides the supply and demand sides to data with reliable data integration and calculation environments,” said BIBDE. “With regard to compliance protections, entry review and categorised regulation are implemented for transaction participations, while data sources are subject to legal...