According to the application, published on the website of the US Patent and Trademark Office, Apple intends to patent the use of blockchain in the system to create and verify timestamps.
The system is able to certify timestamps by combining aspects of blockchain technology with public key infrastructure tools (PKI).
The proposed use case involves binding a piece of information to a particular transaction on a blockchain and establishing the state of that data at a certain point in time. When this information is changed, additional, detailed data changes, transactions can be created.
Apple describes three possible methods for creating timestamps, one of which is centered around the blockchain platform.
The system will generate a block containing a timestamp, with each subsequent block being added as the miners check each transaction. Apple calls the system an 'architecture with multiple checks,' which means that another system will check the time stamp after the block is created, but before it is added to the chain.
According to the application, Apple will consider the possibility of using blockchain because of decentralized security functions, since it is able not only to maintain timestamps, but also to protect data in case of hacking one of the nodes.
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