The phrase "paper proof" is correct and usable in written English.
You could use it to refer to physical evidence that exists on paper, such as a signed contract or a document. For example, "We need the paper proof before we can go any further."
Northamptonshire claimed that using the service has reduced its cost to serve from £6.70 for paper applications with paper proof of benefit to £2.14 using the website.
She reminded the jury that the early residents were "pioneers" whose lifestyles did not include credit card bills or other paper proof of where they lived.
Other main benefits of the service, according to the authorities, are that it does not require paper proof of entitlement and that parents can use the site from their own computer or mobile phone.
The law requires you to have paper proof of every donation you deduct.
Those include having a receipt or paper proof for each donation, no matter how small, and written acknowledgment from each charity for every donation of $250 or more.
Therefore, the scientific results in this paper proof the applicability of the presented consecutive numerical-analytical procedure to assess the local compressive residual stress stability of HFMI-treated welded steel joints in both the low- and high-cycle fatigue region.
Many of Frutiger's designs were constructed using large paper proofs that he would then trim with scissors and a knife, shaving a millimetre here and there until he had reached the result he wanted.
The poet was surprised, even appalled, to hear his sighting was the paper's proof that Clark was on a mission for the Soviets.
In 1965, Paul Samuelson, the M.I.T. polymath who was the first American to win the Nobel Prize in Economics, published a paper entitled "Proof That Properly Anticipated Prices Fluctuate Randomly".
In this paper the proof is extended to an Incomplete Cholesky decomposition.
Indeed Davies mentions it in passing in his paper without proof.
