Time stamps on JIRA Stories/subtask when moved between swim lanes

[DPA]

Hello,

We have 5 swim lanes, Stories have subtask(Dev & QA). The subtask are moved between the Swim lanes. I want to capture the date(timestamp)  when a subtask moves from one swim lane to another( for example: To Do swim lane to In- Progress swim lane).  The reason is we want to see which stories/subtask are not completing as per original estimates.

Please let me know how to do it. I understand Time tracking captures this information but it is based on user's data, so if the data entered is not correct, the O/P would not correct.

Is there setting which can be enabled in the dashboard to show the time stamp on the subtask.
OR is there any JQL query which can be executed to see the timestamp against all stories/subtask in the current sprint.   

[DPA]

Thanks Alexey. 

On running the Rest Api, would it get the information for all the Project at once OR if I only want one Project information, I specify the Project Name in the Query.

[Alexey Matveev]

What do you call swim lanes? I guess you mean that you move an issue from the column To Do to the column In Progress in the board.If so, then all columns are mapped to statuses, that is why if you move an issue from one column to another, a transition happens, which is logged by Jira. You can find timestamps of all transitions in the history tab of the detail issue view screen.

You can not get all timestamps with JQL. You can do it with Rest Api. You can use GET

/api/2/issue/issuekey?expand=changelog

[Alexey Matveev]

This rest API would give information about one issue. It will not return multiple issues