Application US20190197130

ENSURING CONSISTENCY IN DISTRIBUTED INCREMENTAL CONTENT PUBLISHING
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US20190197130

1. A method, comprising: (6) (4)

receiving a first event comprising a first change to content that is replicated across a set of content sources;

calculating, by a computer system associated with a content source in the set of content sources, a first proof of work from the first change;

broadcasting, by the computer system, the first proof of work for verification by other content sources in the set of content sources; and

recording, by the computer system, the first change in the content by storing, in a blockchain, a first block comprising the first change and the first proof of work.

2. The method of claim 1, further comprising: (1) (3)

receiving a second event comprising a second change to the content;

during calculation of a second proof of work from the second change, receiving the second proof of work from another content source in the set of content sources; and

upon verifying the received second proof of work, recording the second change by storing, in the blockchain, a second block comprising the second change and the second proof of work.

3. The method of claim 2, wherein verifying the received second proof of work comprises: (0) (1)

4. The method of claim 1, wherein storing the first block in the blockchain comprises: (1) (1)

linking the first block to a previous block in the blockchain by including a previous proof of work from the previous block in the first block.

5. The method of claim 4, wherein storing the first block in the blockchain further comprises: (1) (2)

upon receiving a different previous proof of work for the first block from another content source, identifying a longer chain from a first chain comprising the previous block and the first block and a second chain comprising another previous block containing the value and the first block; and

selecting the longer chain for inclusion in the blockchain.

6. The method of claim 5, wherein identifying the longer chain comprises: (0) (1)

7. The method of claim 1, further comprising: (0) (3)

8. The method of claim 1, wherein calculating the first proof of work from the first event comprises: (2) (3)

selecting a nonce for the first proof of work;

calculating a hash from the nonce and the first change; and

verifying that the hash satisfies a difficulty requirement.

9. The method of claim 8, wherein the nonce is selected to be larger than a previous nonce from a previous proof of work. (0)

10. The method of claim 8, wherein the first block further comprises: (0) (2)

11. The method of claim 1, wherein the first event is received over a message queue. (0)

12. The method of claim 1, wherein set of the content sources is included in a content management system. (0)

13. A method, comprising: (3) (4)

receiving a first event comprising a first change to content that is replicated across a set of content sources;

calculating, by a computer system associated with a content source in the set of content sources, a first proof of work from the first change;

during calculation of the first proof of work, receiving the first proof of work from another content source in the set of content sources; and

upon verifying the received first proof of work, recording the first change by storing, in the blockchain, a first block comprising the first change and the first proof of work.

14. The method of claim 13, further comprising: (0) (4)

receiving a second event comprising a second change to the content;

calculating a second proof of work from the second change;

broadcasting the second proof of work for verification by other content sources in the set of content sources; and

recording the second change in the content by storing, in the blockchain, a second block comprising the second change and the second proof of work.

15. The method of claim 13, wherein verifying the received first proof of work comprises: (0) (1)

16. The method of claim 13, wherein storing the first block in the blockchain comprises: (2) (1)

linking the first block to a previous block in the blockchain by including a previous proof of work from the previous block in the first block.

17. The method of claim 16, wherein storing the first block in the blockchain further comprises: (0) (2)

18. The method of claim 16, wherein the first block further comprises: (0) (2)

19. A non-transitory computer-readable storage medium storing instructions that when executed by a computer cause the computer to perform a method, the method comprising: (1) (4)

receiving a first event comprising a first change to content that is replicated across a set of content sources;

calculating a first proof of work from the first change;

broadcasting the first proof of work for verification by other content sources in the set of content sources; and

recording the first change in the content by storing, in a blockchain, a first block comprising the first change and the first proof of work.

20. The non-transitory computer-readable storage medium of claim 19, the method further comprising: (0) (3)

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Application US20190197130

ENSURING CONSISTENCY IN DISTRIBUTED INCREMENTAL CONTENT PUBLISHING

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