DOCUMENT TRANSFER PROCESSING FOR BLOCKCHAINS

• US 20190327080A1
• Filed: 04/24/2018
• Published: 10/24/2019
• Est. Priority Date: 04/24/2018
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Liu, Chih-Hsiung, Tseng, Joey H.Y., Su, Chih-Wen, Lin, June-Ray, Noble, Gary P.
• Granted Patent: US 11,563,557 B2
• Time in Patent Office: Days
• CPC Class Codes: G06F 21/6218 to a system of files or objects, e.g. local or distributed file system or database
• CPC Class Codes: H04L 2209/56 Financial cryptography, e.g. electronic payment or e-cash
• CPC Class Codes: H04L 63/0209 Architectural arrangements, e.g. perimeter networks or demilitarized zones
• CPC Class Codes: H04L 63/08 for authentication of entities cryptographic mechanisms or cryptographic arrangements for entity authentication H04L9/32
• CPC Class Codes: H04L 9/0637 Modes of operation, e.g. cipher block chaining [CBC], electronic codebook [ECB] or Galois/counter mode [GCM]
• CPC Class Codes: H04L 9/0891 Revocation or update of secret information, e.g. encryption key update or rekeying
• CPC Class Codes: H04L 9/3239 involving non-keyed hash functions, e.g. modification detection codes [MDCs], MD5, SHA or RIPEMD
• CPC Class Codes: H04L 9/3247 involving digital signatures
• CPC Class Codes: H04L 9/3265 using certificate chains, trees or paths; Hierarchical trust model
• CPC Class Codes: H04L 9/50 using hash chains, e.g. blockchains or hash trees

Abstract

An example operation may include one or more of configuring a blockchain network comprising first and second blockchain nodes, providing, by the first blockchain node, a data reference to the second blockchain node, accessing a document, by the second blockchain node, from the first blockchain node, and providing by the second blockchain node, a proof of receipt for the document to a shared blockchain ledger.

Claims

1. A method, comprising:

configuring a blockchain network comprising first and second blockchain nodes;

providing, by the first blockchain node, a data reference to the second blockchain node;

accessing a document corresponding to the data reference, by the second blockchain node, from the first blockchain node; and

providing by the second blockchain node, a proof of receipt for the document to a shared blockchain ledger.

2. The method of claim 1, wherein the proof of receipt comprises a hash of the document and one or more of a salt and an identifier of a blockchain node that received the document.

3. The method of claim 1, wherein configuring the blockchain network comprising:

registering, by each of the first and second blockchain nodes, with a third blockchain node;

providing, by the third blockchain node, a smart contract to the first and second blockchain nodes; and

signing the smart contract, by each of the first and second blockchain nodes.

4. The method of claim 3, wherein the data reference comprises a URL, wherein the document is not stored on the blockchain or the third blockchain node.

5. The method of claim 3, wherein the third blockchain node comprises a cloud broker comprising a root node, wherein the smart contract comprises communication parameters of the root node and credentials for each of the first and second blockchain nodes.

6. The method of claim 5, wherein the cloud broker establishes a reversed connection to each of the first and second blockchain nodes.

7. The method of claim 5, wherein configuring the blockchain network further comprising:

importing the communication parameters into a gateway associated with each of the first and second blockchain nodes; and

storing credentials for each blockchain node that will be involved in document transfers.

8. A system, comprising:

a blockchain network, comprising;

a cloud broker comprising a root node;

a first blockchain node, configured to;

provide a data reference;

a second blockchain node, configured to;

receive the data reference from the first blockchain node, and in response;

access a document that corresponds with the data reference from the first blockchain node; and

provide a proof of receipt for the document to a shared blockchain ledger.

9. The system of claim 8, wherein the proof of receipt comprises a hash of the document and one or more of a salt and an identifier of the second blockchain node.

10. The system of claim 8, wherein prior to the first blockchain node provides the data reference, each of the first and second blockchain nodes registers with a third blockchain node, the third blockchain node provides a smart contract to the first and second blockchain nodes, and each of the first and second blockchain nodes signs the smart contract.

11. The system of claim 10, wherein the data reference comprises a URL, wherein the document is not stored on the blockchain or the third blockchain node.

12. The system of claim 10, wherein the third blockchain node comprises the cloud broker, wherein the smart contract comprises communication parameters of the root node and credentials for each of the first and second blockchain nodes.

13. The system of claim 12, wherein the cloud broker establishes a reversed connection to each of the first and second blockchain nodes.

14. The system of claim 12, wherein each of the first and second blockchain nodes imports the communication parameters into a gateway and stores credentials for each blockchain node that will be involved in document transfers.

15. A non-transitory computer readable medium comprising instructions, that when read by a processor, cause the processor to perform:

configuring a blockchain network comprising first and second blockchain nodes;

providing, by the first blockchain node, a data reference to the second blockchain node;

accessing a document corresponding to the data reference, by the second blockchain node, from the first blockchain node; and

providing by the second blockchain node, a proof of receipt for the document to a shared blockchain ledger.

16. The non-transitory computer readable medium of claim 15, wherein the proof of receipt comprises a hash of the document and one or more of a salt and an identifier of a blockchain node that received the document.

17. The non-transitory computer readable medium of claim 15, wherein configuring the blockchain network comprising:

registering, by each of the first and second blockchain nodes, with a third blockchain node;

providing, by the third blockchain node, a smart contract to the first and second blockchain nodes; and

signing the smart contract, by each of the first and second blockchain nodes.

18. The non-transitory computer readable medium of claim 17, wherein the data reference comprises a URL, wherein the document is not stored on the blockchain or the third blockchain node.

19. The non-transitory computer readable medium of claim 16, wherein the third blockchain node comprises a cloud broker comprising a root node, wherein the smart contract comprises communication parameters of the root node and credentials for each of the first and second blockchain nodes.

20. The non-transitory computer readable medium of claim 19, wherein the cloud broker establishes a reversed connection to each of the first and second blockchain nodes, wherein configuring the blockchain network further comprising:

importing the communication parameters into a gateway associated with each of the first and second blockchain nodes; and

storing credentials for each blockchain node that will be involved in document transfers.