Apple is developing a system to create and confirm timestamps on the blockchain, follows from a patent application published by the US Patent and Trademark Office.
The company's program is able to confirm the correct timing by combining various aspects of blockchain technology and PKI tools.
This will allow you to tie a separate piece of data to a transaction in the blockroom, fixing the information component at a certain point in time. Changing this component will automatically create another transaction, indicating that the changes were actually made.
In its application, Apple describes three methods for creating timestamps, one of which involves the use of a blockchain.
The program will issue blocks containing timestamps, to which will be added other blocks issued by the miners and containing the remaining transactions conducted in this chain. Apple notes that the system will work as part of a more complex architecture, implying several checks at once. In other words, the additional system will confirm the correctness of the timestamp after the creation of the block, but before adding it to the main block.
The reason why Apple is interested in blockchain is in the connection with the benefits of security, due to the decentralization of technology. In the proposed system, the nodes of the network will not accept transactions from another node if they find that the blocks that it passes to them do not correspond to their version of the block.
Thus, the system developed by Apple not only allows creating unchanged and verifiable time stamps, but will also be protected from intruders.