公开(公告)号：US20200259658A1

公开(公告)日：2020-08-13

申请号：US16270145

申请日：2019-02-07

Applicant: International Business Machines Corporation

Inventor： FRANK R. LIBSCH ,  SEIJI MUNETOH ,  ABHILASH NARENDRA ,  GHAVAM G. SHAHIDI

IPC: H04L9/32 ,  G06F21/72

Abstract: A processor-implemented method imposes trust at the edge of a blockchain. A hardware interrogator in a terminal interrogates an Internet of Things Smart Device (IoTSD). The IoTSD is an off-line device that is associated with a physical product. The IoTSD includes a cryptographic processor and one or more state sensors that monitor a state of the physical product. The hardware interrogator detects an event that is described by an encrypted entry in the IoTSD. The terminal transmits, to a blockchain, a transaction that describes the event that is detected by the hardware interrogator, such that the blockchain adds the transaction to a blockchain that is dedicated to the physical product, and the blockchain establishes a state of the physical product.