Record version
Every change to a record is stored as a separate record version in DatoCMS.
Object payload
RFC 4122 UUID of redord version expressed in URL-safe base64 format
"59JSonvYTCOUDz_b7_6hvA"
Must be exactly "item_version".
Date of record version creation
Whether the record version is the published version or not
Date this version became the published version of the record, or null if it has never been published. May also be null for versions that were published before publication-history tracking was introduced; in that case, fall back to is_published to determine the live status.
Date this version stopped being the published version of the record (either replaced by a newer published version, or explicitly unpublished). null when the version is currently published or has never been published.
Whether the record version is the most recent version or not
The record version's model
The record this version belongs to
The entity (account/collaborator/access token/sso user) who made this change to the record
Whether the record version is valid or not
Validity of a version can only be established in the context of all the current or published item's versions (think about uniqueness validations, for example): use item's is_current_version_valid or is_published_version_valid fields instead.