Verified what could be measured (4,4)

I believe the answer is:

made sure

'verified' is the definition.
(making sure is a kind of verifying)

'could be measured' is the wordplay.
'could be' is an anagram indicator.
'measured' is an anagram of 'MADE SURE'.

'what' is the link.

I've seen this clue in The Irish News.

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