Checked after a short time, and confirmed (8)
I believe the answer is:
attested
'confirmed' is the definition.
(thesaurus)
'checked after a short time' is the wordplay.
'checked' becomes 'tested' ('test' can be a synonym of 'check'**).
'after' says to put letters next to each other.
'short time' becomes 't' (abbreviation for time).
'a'+'t'='at'
'tested' put after 'at' is 'ATTESTED'.
'and' is the link.
(Other definitions for attested that I've seen before include "Bore witness to" , "Provided proof" , "Declared that something was true" , "Witnessed formally" , "Declared to be true or genuine" .)