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1. (WO2018202322) CREATING MATCH COHORTS AND EXCHANGING PROTECTED DATA USING BLOCKCHAIN

Pub. No.:    WO/2018/202322    International Application No.:    PCT/EP2017/083282
Publication Date: Fri Nov 09 00:59:59 CET 2018 International Filing Date: Tue Dec 19 00:59:59 CET 2017
IPC: H04L 9/32
G06F 21/60
Applicants: INTERNATIONAL BUSINESS MACHINES CORPORATION
IBM UNITED KINGDOM LIMITED
Inventors: DOGANATA, Yurdaer, Nezihi
ELEFTHERIOU, Maria
CURBERA, Francisco, Phelan
OVERMAN, Mark, Howard
Title: CREATING MATCH COHORTS AND EXCHANGING PROTECTED DATA USING BLOCKCHAIN
Abstract:
A method, computing system and computer program product are provided. A first entity system that stores sensitive information associated with different entities applies a hash function a portion of the sensitive information to produce hash values. Transaction information pertaining to transactions performed on entity systems are stored within a blockchain database accessible to the entity systems. The transaction information includes hash values corresponding to associated entities from the entity systems. The hash values of the first entity system are compared to the hash values from others of the entity systems to determine entity systems containing information pertaining to same entities. The sensitive information for an entity of the first entity system is exchanged with the determined entity systems containing information for that entity.