Filtering and redacting blockchain transactions

Patent metadata

Field	Value
Publication number	US-10171509-B2
Application number	US-201615348581-A
Country	US
Kind code	B2
Filing date	Nov 10, 2016
Priority date	Nov 10, 2016
Publication date	Jan 1, 2019
Grant date	Jan 1, 2019

Abstract

A blockchain may store transactions which should were not intended to be recorded due to inappropriate content or unwanted subject matter submitted by malicious users. A method may also include one or more of identifying a blockchain transaction, processing content of the blockchain transaction to identify prohibited content, and determining whether to approve or disapprove the blockchain transaction based on the content of the blockchain transaction.

First claim

What is claimed is:

1. A method, comprising:
identifying a blockchain transaction;
processing content of the blockchain transaction to identify prohibited content;
determining whether to approve or disapprove the blockchain transaction based on the content of the blockchain transaction;
determining that the content is disapproved after the blockchain transaction is logged in a blockchain;
determining to redact the blockchain transaction; and
redacting the blockchain transaction logged in the blockchain by creating and storing a transaction redaction contract in a genesis block of the blockchain.

2. The method of claim 1 , further comprising:
logging the blockchain transaction in the blockchain.

3. The method of claim 1 , further comprising:
denying access to the blockchain transaction logged in the blockchain.

4. The method of claim 1 , further comprising:
creating a redaction transaction responsive to determining to redact the transaction;
responsive to receiving the redaction transaction, updating the transaction redaction contract to include a list of contracts identified as redacted including the blockchain transaction; and
logging the redaction transaction on the blockchain.

5. A system, comprising:
a processor; and
memory, wherein the processor and memory are communicably coupled to one another;
wherein the processor is configured to:
identify a blockchain transaction;
process content of the blockchain transaction to identify prohibited content; and
determine whether to approve or disapprove the blockchain transaction based on the content of the blockchain transaction;
determine that the content is disapproved after the blockchain transaction is logged in a blockchain;
determine to redact the blockchain transaction; and
create and store a transaction redaction contract in a genesis block of the blockchain to redact the blockchain transaction logged in the blockchain.

6. The system of claim 5 , wherein the processor is configured to:
log the blockchain transaction in the blockchain.

7. The system of claim 5 , wherein the processor is configured to:
deny access to the blockchain transaction logged in the blockchain.

8. The system of claim 5 , wherein the processor is configured to:
create a redaction transaction responsive to the determination to redact the transaction;
responsive to receipt of the redaction transaction, update the transaction redaction contract to include a list of contracts identified as redacted including the blockchain transaction; and
log the redaction transaction on the blockchain.

9. A non-transitory computer readable medium comprising instructions, that when read by a processor, cause the processor to perform:
identifying a blockchain transaction;
processing content of the blockchain transaction to identify prohibited content;
determining whether to approve or disapprove the blockchain transaction based on the content of the blockchain transaction;
determining that the content is disapproved after the blockchain transaction is logged in a blockchain;
determining to redact the blockchain transaction; and
redacting the blockchain transaction logged in the blockchain by creating and storing a transaction redaction contract in a genesis block of the blockchain.

10. The non-transitory computer readable medium of claim 9 , comprising instructions, that when read by the processor, cause the processor to perform:
logging the blockchain transaction in the blockchain.

11. The non-transitory computer readable medium of claim 9 , comprising instructions, that when read by the processor, cause the processor to perform:
denying access to the blockchain transaction logged in the blockchain.

12. The non-transitory computer readable medium of claim 9 , further comprising:
creating a redaction transaction responsive to determining to redact the transaction;
responsive to receiving the redaction transaction, updating the transaction redaction contract to include a list of contracts identified as redacted including the blockchain transaction; and
logging the redaction transaction on the blockchain.

Assignees

• IBM

Inventors

• Anderson Sheehan
• Nguyen Binh Q

Classifications

• H04L9/32

  including means for verifying the identity or authority of a user of the system {or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials} · CPC title

• H04L63/20 Primary

  for managing network security; network security policies in general (filtering policies H04L63/0227) · CPC title

• H04L9/50

  using hash chains, e.g. blockchains or hash trees · CPC title

• H04L9/3236

  using cryptographic hash functions · CPC title