EXECUTING TRANSACTIONS BASED ON BLOCKCHAIN

• US 20200133939A1
• Filed: 12/20/2019
• Published: 04/30/2020
• Est. Priority Date: 02/27/2018
• Status: Active Grant

• Current Assignee: Advanced New Technologies Company Limited (Ant Group Co., Ltd.)
• Original Assignee: Alibaba Group Holding Ltd.
• Inventors: Qiu, Honglin, Du, Huabing
• Granted Patent: US 11,023,456 B2
• Time in Patent Office: Days
• CPC Class Codes: G06F 16/2365 Ensuring data consistency and integrity
• CPC Class Codes: G06F 16/245 Query processing
• 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: G06F 21/64 Protecting data integrity, e.g. using checksums, certificates or signatures
• CPC Class Codes: G06Q 20/02 involving a neutral party, e.g. certification authority, notary or trusted third party [TTP]
• CPC Class Codes: G06Q 20/3827 Use of message hashing
• CPC Class Codes: G06Q 20/389 Keeping log of transactions for guaranteeing non-repudiation of a transaction

Abstract

At a node device associated with a blockchain as a received target transaction, a target transaction published by a user is received, where the received target transaction includes transaction content, and where at least a part of the transaction content includes a content summary associated with target content that is stored in a third-party storage system connected to the blockchain. By the node device and to the third-party storage system, the target content corresponding to the content summary is queried. By the node device, whether the target content is verified is determined. In response to determining that the target content is verified, by the node device, the received target transaction is executed based on the transaction content. By the node device, the received target transaction is stored in a distributed database associated with the blockchain.

Claims

1. A computer-implemented method, comprising:

receiving, at a node device associated with a blockchain as a received target transaction, a target transaction published by a user, wherein the received target transaction comprises transaction content, and wherein at least a part of the transaction content comprises a content summary associated with target content that is stored in a third-party storage system connected to the blockchain;

querying, by the node device and to the third-party storage system, the target content corresponding to the content summary;

determining, by the node device, whether the target content is verified;

in response to determining that the target content is verified, executing, by the node device, the received target transaction based on the transaction content; and

storing, by the node device, the received target transaction in a distributed database associated with the blockchain.

2. The computer-implemented method of claim 1, wherein the blockchain is a member blockchain associated with a consortium blockchain network, wherein the consortium blockchain network comprises a plurality of member blockchains, and wherein each member blockchain in the consortium blockchain network is a third-party storage system connected to another member blockchain to implement a cross-chain data reference.

3. The computer-implemented method of claim 2, wherein the third-party storage system comprises a content-addressable-storage (CAS) platform that provides a data storage service for the plurality of the member blockchains, wherein the CAS platform uses the content summary of the stored target content as a query index of the target content, and wherein the CAS platform stores a mapping relationship between the query index and the target content.

4. The computer-implemented method of claim 1, wherein determining whether the target content is verified comprises:

identifying, by the node device as identified target content, the target content corresponding to the content summary carried in the received target transaction;

recalculating, by the node device as recalculated content summary, the content summary of the identified target content;

determining, by the node device, whether the recalculated content summary matches the content summary carried in the received target transaction;

if it is determined that the recalculated content summary matches the content summary carried in the received target transaction;

determining that the target content is verified and that the received target transaction is a valid transaction; and

obtaining complete transaction content carried in the received target transaction;

or

if it is determined that the recalculated content summary does not match the content summary carried in the received target transaction;

determining that the target content is not verified and that the received target transaction is invalid; and

terminating the received target transaction.

5. The computer-implemented method of claim 4, wherein executing the received target transaction based on the transaction content comprises automatically executing the received target transaction based on the complete transaction content by invoking a smart contract published in the blockchain.

6. The computer-implemented method of claim 4, wherein the received target transaction published by the user is a standard transaction supported by the blockchain, and wherein executing the received target transaction comprises:

determining, by the node device, whether the received target transaction is valid;

in response to determining that the received target transaction is valid, broadcasting, by the node device, the received target transaction in the blockchain;

synchronizing, by the node device, the received target transaction to other node devices in the blockchain to allow the other node devices to check a validity of the received target transaction; and

if a predetermined number of the other node devices determine that the received target transaction is valid, confirming, by the node device, that the received target transaction is valid and completing the received target transaction.

7. The computer-implemented method of claim 1, wherein storing the received target transaction in the distributed database comprises storing a transaction log and a transaction state of the received target transaction in the distributed database.

8. A non-transitory, computer-readable medium storing one or more instructions executable by a computer system to perform operations comprising:

receiving, at a node device associated with a blockchain as a received target transaction, a target transaction published by a user, wherein the received target transaction comprises transaction content, and wherein at least a part of the transaction content comprises a content summary associated with target content that is stored in a third-party storage system connected to the blockchain;

querying, by the node device and to the third-party storage system, the target content corresponding to the content summary;

determining, by the node device, whether the target content is verified;

in response to determining that the target content is verified, executing, by the node device, the received target transaction based on the transaction content; and

storing, by the node device, the received target transaction in a distributed database associated with the blockchain.

9. The non-transitory, computer-readable medium of claim 8, wherein the blockchain is a member blockchain associated with a consortium blockchain network, wherein the consortium blockchain network comprises a plurality of member blockchains, and wherein each member blockchain in the consortium blockchain network is a third-party storage system connected to another member blockchain to implement a cross-chain data reference.

10. The non-transitory, computer-readable medium of claim 9, wherein the third-party storage system comprises a content-addressable-storage (CAS) platform that provides a data storage service for the plurality of the member blockchains, wherein the CAS platform uses the content summary of the stored target content as a query index of the target content, and wherein the CAS platform stores a mapping relationship between the query index and the target content.

11. The non-transitory, computer-readable medium of claim 8, wherein determining whether the target content is verified comprises:

identifying, by the node device as identified target content, the target content corresponding to the content summary carried in the received target transaction;

recalculating, by the node device as recalculated content summary, the content summary of the identified target content;

determining, by the node device, whether the recalculated content summary matches the content summary carried in the received target transaction;

if it is determined that the recalculated content summary matches the content summary carried in the received target transaction;

determining that the target content is verified and that the received target transaction is a valid transaction; and

obtaining complete transaction content carried in the received target transaction;

or

if it is determined that the recalculated content summary does not match the content summary carried in the received target transaction;

determining that the target content is not verified and that the received target transaction is invalid; and

terminating the received target transaction.

12. The non-transitory, computer-readable medium of claim 11, wherein executing the received target transaction based on the transaction content comprises automatically executing the received target transaction based on the complete transaction content by invoking a smart contract published in the blockchain.

13. The non-transitory, computer-readable medium of claim 11, wherein the received target transaction published by the user is a standard transaction supported by the blockchain, and wherein executing the received target transaction comprises:

determining, by the node device, whether the received target transaction is valid;

in response to determining that the received target transaction is valid, broadcasting, by the node device, the received target transaction in the blockchain;

synchronizing, by the node device, the received target transaction to other node devices in the blockchain to allow the other node devices to check a validity of the received target transaction; and

if a predetermined number of the other node devices determine that the received target transaction is valid, confirming, by the node device, that the received target transaction is valid and completing the received target transaction.

14. The non-transitory, computer-readable medium of claim 8, wherein storing the received target transaction in the distributed database comprises storing a transaction log and a transaction state of the received target transaction in the distributed database.

15. A computer-implemented system, comprising:

one or more computers; and

one or more computer memory devices interoperably coupled with the one or more computers and having tangible, non-transitory, machine-readable media storing one or more instructions that, when executed by the one or more computers, perform one or more operations comprising;

receiving, at a node device associated with a blockchain as a received target transaction, a target transaction published by a user, wherein the received target transaction comprises transaction content, and wherein at least a part of the transaction content comprises a content summary associated with target content that is stored in a third-party storage system connected to the blockchain;

querying, by the node device and to the third-party storage system, the target content corresponding to the content summary;

determining, by the node device, whether the target content is verified;

in response to determining that the target content is verified, executing, by the node device, the received target transaction based on the transaction content; and

storing, by the node device, the received target transaction in a distributed database associated with the blockchain.

16. The computer-implemented system of claim 15, wherein the blockchain is a member blockchain associated with a consortium blockchain network, wherein the consortium blockchain network comprises a plurality of member blockchains, and wherein each member blockchain in the consortium blockchain network is a third-party storage system connected to another member blockchain to implement a cross-chain data reference.

17. The computer-implemented system of claim 16, wherein the third-party storage system comprises a content-addressable-storage (CAS) platform that provides a data storage service for the plurality of the member blockchains, wherein the CAS platform uses the content summary of the stored target content as a query index of the target content, and wherein the CAS platform stores a mapping relationship between the query index and the target content.

18. The computer-implemented system of claim 15, wherein determining whether the target content is verified comprises:

identifying, by the node device as identified target content, the target content corresponding to the content summary carried in the received target transaction;

recalculating, by the node device as recalculated content summary, the content summary of the identified target content;

determining, by the node device, whether the recalculated content summary matches the content summary carried in the received target transaction;

if it is determined that the recalculated content summary matches the content summary carried in the received target transaction;

determining that the target content is verified and that the received target transaction is a valid transaction; and

obtaining complete transaction content carried in the received target transaction;

or

if it is determined that the recalculated content summary does not match the content summary carried in the received target transaction;

determining that the target content is not verified and that the received target transaction is invalid; and

terminating the received target transaction.

19. The computer-implemented system of claim 18, wherein executing the received target transaction based on the transaction content comprises automatically executing the received target transaction based on the complete transaction content by invoking a smart contract published in the blockchain.

20. The computer-implemented system of claim 18, wherein the received target transaction published by the user is a standard transaction supported by the blockchain, and wherein executing the received target transaction comprises:

determining, by the node device, whether the received target transaction is valid;

in response to determining that the received target transaction is valid, broadcasting, by the node device, the received target transaction in the blockchain;

synchronizing, by the node device, the received target transaction to other node devices in the blockchain to allow the other node devices to check a validity of the received target transaction; and

if a predetermined number of the other node devices determine that the received target transaction is valid, confirming, by the node device, that the received target transaction is valid and completing the received target transaction.