Patent ID: 11880383
Assignee: SAP SE
Field: Digital communication (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A computer implemented method for notarized communication between a plurality of platform systems, the method being executed by one or more processors and comprising:
notarizing a first data object by storing a first root hash value for the first data object at a blockchain network;
establishing a subscription for a first platform system to provide notification events in relation to a second data object, the first root hash value comprising an object reference to a second root hash value for the second data object, wherein the second root hash value is notarized at the blockchain network by a second platform system, wherein the first root hash value is notarized at the blockchain network without taking the second root hash value as input and without replacing the second root hash value with the first root hash value, and wherein the second data object is not a version of the first data object;
notarizing a third root hash value for a third data object at the blockchain network, wherein the third root hash value includes a first notarization reference to the second root hash value associated with the second data object to define that the third data object is a newer version of the second data object that is notarized at the blockchain network by taking the second root hash value as input and providing a signature to replace the second root hash value with the third root hash value when notarizing the third root hash value; and
in response to i) notarizing the third root hash value for the third data object as the newer version of the second data object at the blockchain network and ii) the first root hash value for the first data object comprising the object reference to the second root hash value notarized at the blockchain network for the second data object, sending a notification event in relation to the third data object as the newer version of the second data object to the first platform system.