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1. (WO2019063129) INTEGRITY OF DATA RECORDS
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Claims

1 . A method of securing integrity of data collected in data storage apparatus for an object over time, comprising

receiving, at the data storage apparatus, data relating to the object, wherein at least a part of the data originates from a data processing entity provided in connection with the object,

processing, by the data storage apparatus upon receipt of the data, the received data by storing the data in the data storage apparatus and computing a first digital signature for the data,

sending, by the data storage apparatus, the first digital signature to a distributed ledger for later use in verification of the data stored in the data storage apparatus,

sending the data from the data storage apparatus for presentation by at least one user device, and

computing a second digital signature for the data for use in verification of the integrity of the data based on the first digital signature stored in the distributed ledger.

2. The method according to claim 1 , comprising computing the second digital signature by the data storage apparatus at the time of sending of the data from the data storage apparatus to the at least one user device.

3. The method according to claim 1 or 2, wherein computing the digital signatures comprises computing hashes for the data.

4. The method according to any preceding claim, further comprising

retrieving, in response to receiving a request for the data, the requested data from the data storage apparatus, and

computing the second digital signature for the retrieved data using the same algorithm that was used for computing the first digital signature for use in comparing the first digital signature and the second digital signature to verify the integrity of the data.

5. The method according to any preceding claim, further comprising

receiving, by an application executed in a user device the data and the second digital signature,

receiving, by the application, the first digital signature from the distributed ledger,

comparing, by the application, the first digital signature and the second digital signature to verify the integrity of the data, and

controlling a display of the user device accordingly.

6. The method according to any preceding claim, wherein the object comprises a vehicle, the method further comprising collecting at least a part of the data by a data gathering arrangement integrated with the vehicle.

7. The method according to any preceding claim, wherein the object comprises a vehicle, the method further comprising presenting verified data by a display device integrated with the vehicle.

8. The method according to claim 7, comprising limiting the right to access the data stored in the data storage apparatus to devices and/or users associated with the vehicle.

9. The method according to claim 8, comprising limiting presentation of at least a part of the data to user devices connected with the vehicle via a wireless short range communication link.

10. The method according to any preceding claim, comprising comparing the data for the object to data collected for other objects of similar type and verified by means of a distributed ledger.

11. The method according to claim 10, comprising ranking and/or valuing the object relative to the other objects.

12. Apparatus for storing data collected for an object over time, comprising at least one processor and at least one memory including computer program code, wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause the apparatus to

receive data relating to the object, wherein at least a part of the data is received from a data processing entity provided in connection with the object, upon receipt of the data, compute a first digital signature for the received data and store the received data in the at least one memory,

send the first digital signature to a distributed ledger for later use in verification of the data stored in the server apparatus, and

send the data for presentation by at least one user device, the apparatus being further configured to compute a second digital signature for the data and send the second digital signature with the data to the at least one user device for use in verification of the integrity of the data based on the first digital signature stored in the distributed ledger.

13. The apparatus according to claim 12, configured to automatically compute a first hash for the data upon receipt of the data and a second hash for the data in connection with sending of the data.

14. The apparatus according to claim 12 or 13, configured to communicate the first digital signature to a blockchain.

15. The apparatus according to any of claims 12 to 14, configured to

retrieve, in response to receiving a request for the data, the requested data from the at least one memory, and

compute the second digital signature for the retrieved data using the same algorithm that was used for computing the first digital signature for use in verification where the integrity of the data is verified based on comparison of the first digital signature and the second digital signature.

16. The apparatus according to any of claims 12 to 15, configured to communicate data with a data processing entity integrated with the object.

17. The apparatus according to any of claims 12 to 16, wherein the object comprises a vehicle, the apparatus further comprising an data gathering arrangement integrated with the vehicle.

18. The apparatus according to any of claims 12 to 17, wherein the object comprises a vehicle, the apparatus further comprising user interface for presenting verified data to a user by a device integrated with the vehicle.

19. The apparatus according to any of claims 12 to 18, configured to control access to the data based on at least one of a password, a user ID, a smart card, an equipment ID, and a token.

20. A user device for use in association with data storage apparatus for storing data collected for an object, the data storage apparatus being configured to compute a first digital signature for the data and send the first digital signature to a distributed ledger for later use in verification of the data stored in the data storage apparatus, the user device comprising a user interface, at least one processor and at least one memory including computer program code, wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause the user device to

receive data relating to the object from the data storage apparatus, receive the first digital signature from the distributed ledger,

compare the first digital signature and a second digital signature computed for the data to verify the integrity of the data, and

control presentation of the data on the user interface accordingly.

21. The user device according to claim 20, configured to receive the data and the second digital signature from the data storage apparatus.

22. The user device according to claim 20 or 21 , configured to communicate with the object over a wireless short range communication link, wherein the presentation of the data is enabled when the user device is within the range of the link.

23. The user device according to any of claims 20 to 22, comprising a handheld device arranged for wireless communications and configured to handle at least one of an unique identifier, a password, a smart card, and a token in connection with access to the data.