File management method, device, electronic equipment and system

The invention provides a file management method and device, electronic equipment and a system, and relates to the technical field of block chains. The method comprises the steps that a smart contract deployed in a block chain network receives file related information sent by a first SIM card in a fi...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	DAI DANSHENG, QIU YANG, CHEN CHAO, WU WEIMIN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION WIRELESS COMMUNICATIONS NETWORKS
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