Patent ID: 11860863
Assignee: AMAZON TECHNOLOGIES, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 14:
15. One or more non-transitory computer readable media storing program instructions that when executed on or across one or more processors, cause the processors to:
receive a request to redact first data from an item of a database, wherein the database is associated with a journal that records transactions committed to the database, wherein the journal records the transactions performed on individual items of the database in corresponding ones of a plurality of blocks in a cryptographically verifiable hash chain along with corresponding versions of the individual items produced by the transactions;
identify one of the plurality of blocks of the journal that comprises a version of the item including the first data; and
replace the version of the item in the identified block with a hash value, wherein the replacement of the version of the item in the block comprises retaining a hash value in the block that identifies the block.