Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
proof of usage
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "proof of usage" is correct and usable in written English.
It can be used when referring to evidence or documentation that demonstrates how something has been used or applied in practice. Example: "To validate the effectiveness of the software, we need to provide proof of usage from our clients."
✓ Grammatically correct
Academia
Science
News & Media
Alternative expressions(5)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified similar examples from authoritative sources
Similar Expressions
60 human-written examples
Indeed, the authorities are abundant to the proposition that, where a question is made whether a certain paper, or other document, has reached the hand of the person for whom it is intended, proof of a usage to deliver such papers at the house, or of the duty of a certain messenger to deliver such papers, creates a presumption that the paper in question was actually so delivered.
Academia
This article gives a brief description of the efforts taken especially by the German automotive industry and its cooperating research institutes to improve the accuracy of life time prediction and to optimise the proof-out by usage of experimental and numerical procedures.
Based on the framework, a proof-of-concept platform is developed and its performance and functionality are evaluated by employing two usage scenarios.
This compound was used as a proof of concept to exemplify the usage of a single compound-based pharmacophore.
Science
JK performed the transfection experiment demonstrating the proof of the concept of Tol2 usage in T2EC.
Science
Proof-of-concept clinical study.
Once, when I was collating a Gould proof, I had the unsettling thought "What if Eleanor ever loses it?" What if all these commas and hyphens and subtleties of usage prove to be the products of a benign delusion?
News & Media
The proof involves repeated usage of Theorems 3.6 and 3.7.
Science
Explanation of usage.
Academia
§ 571.4 Explanation of usage.
Academia
You have to pay regardless of usage.
News & Media
Expert writing Tips
Best practice
When requesting "proof of usage", be specific about the type of evidence required. For example, specify whether you need documented cases, usage statistics, or user testimonials.
Common error
Avoid simply asking for "proof of usage" without clarifying what constitutes acceptable evidence. Provide clear instructions on what the provider should submit.
Source & Trust
78%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "proof of usage" functions primarily as a noun phrase, acting as the subject or object in a sentence. It refers to the demonstration or substantiation that something has been used, as supported by Ludwig's analysis of numerous examples.
Frequent in
Science
0%
News & Media
0%
Formal & Business
0%
Less common in
Academia
0%
Wiki
0%
Encyclopedias
0%
Ludwig's WRAP-UP
In summary, the phrase "proof of usage" serves as a noun phrase, functioning to provide evidence or validation of something's application. According to Ludwig, the expression is grammatically correct. While the phrase's register is generally professional, it can be found across multiple contexts like academia, science and business. When using "proof of usage", clarity is key; specifying the required evidence avoids ambiguity. Alternative phrases include "evidence of use", "demonstration of use", and "validation of usage". Because there were no exact examples in Ludwig's database, the listed frequency is currently missing.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
evidence of use
Focuses on the evidence aspect rather than the validation of usage.
demonstration of use
Emphasizes the act of demonstrating how something is used.
validation of usage
Highlights the act of confirming the correctness or effectiveness of a particular use.
verification of use
Similar to validation, but with a stronger emphasis on confirming the truth or accuracy of the usage.
documentation of use
Focuses on providing written or recorded information about how something is used.
record of application
Highlights past cases of application, rather than demonstrating or validating current usage.
confirmation of use
Similar to validation and verification, but may suggest a more informal or less rigorous process.
substantiation of usage
Implies a need to provide stronger or more detailed evidence to support a claim of usage.
illustration of usage
Highlights a specific example or case that showcases how something is used.
corroboration of use
Emphasis on providing support or confirmation of the use from multiple sources.
FAQs
What does "proof of usage" mean?
The phrase "proof of usage" refers to evidence or documentation that demonstrates how something has been used or applied in practice. This could include usage statistics, documented cases, or other forms of verification.
How can I provide "proof of usage" for software?
To provide "proof of usage" for software, you might include screenshots of the software in use, usage statistics from the software's analytics, or testimonials from users. Clear documentation is key.
What can I say instead of "proof of usage"?
You can use alternatives like "evidence of use", "demonstration of use", or "validation of usage" depending on the context.
In what contexts is "proof of usage" commonly required?
"Proof of usage" is often required in contexts such as software licensing, patent applications, or when demonstrating the value of a product or service to potential investors or clients.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
78%
Authority and reliability
4.1/5
Expert rating
Real-world application tested