diff --git a/misp-core-format/raw.md b/misp-core-format/raw.md
index a17f80b..6e0f55f 100644
--- a/misp-core-format/raw.md
+++ b/misp-core-format/raw.md
@@ -133,13 +133,13 @@ date is represented as a JSON string.
 
 #### timestamp
 
-timestamp represents a reference time when the event was created, or last updated. timestamp is expressed in seconds (decimal) since 1st of January 1970 (Unix timestamp). The time zone MUST be UTC.
+timestamp represents a reference time when the event was created, or last updated/edited on the instance. timestamp is expressed in seconds (decimal) since 1st of January 1970 (Unix timestamp). The time zone MUST be UTC.
 
 timestamp is represented as a JSON string. timestamp MUST be present.
 
 #### publish_timestamp
 
-publish_timestamp represents a reference time when the event was published. published_timestamp is expressed in seconds (decimal) since 1st of January 1970 (Unix timestamp). At each publication of an event, publish_timestamp MUST be updated. The time zone MUST be UTC.
+publish_timestamp represents a reference time when the event was published on the instance. published_timestamp is expressed in seconds (decimal) since 1st of January 1970 (Unix timestamp). At each publication of an event, publish_timestamp MUST be updated. The time zone MUST be UTC.
 
 publish_timestamp is represented as a JSON string. publish_timestamp MUST be present.