Recalling some info orphans supplied as irrefutable corroboration (5)

I believe the answer is:

proof

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'irrefutable corroboration' is the definition.
'proof' can be an answer for 'corroboration' (thesaurus). I'm unsure of the 'irrefutable' bit.

'recalling some info orphans supplied' is the wordplay.
'recalling' is a reversal indicator.
'some' says the answer is hidden in the clue (some parts of the word are used).
'foorp' can be found hidden inside 'info orphans supplied'.
'foorp' back-to-front is 'PROOF'.

'as' acts as a link.

Can you help me to learn more?

(Other definitions for proof that I've seen before include "Incontrovertible evidence" , "Test" , "Conclusive demonstration" , "Evidence that establishes the truth" , "Trial printing" .)

I've seen this clue in The Irish Times.

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