In my experience I would even say having a boolean field in your table is a bad idea, with rare exceptions. e.g. - You may want proper state transition rather

In my experience I would even say having a boolean field in your table is a bad idea, with rare exceptions. e.g. - You may want proper state transition rather than having 4 booleans each representing one state - You may want to normalize the boolean with other metadata (timestamp, as OP suggestion, and author) into separate table,