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Prove what you built The Proof Sheet

Write down what your project will do and three tests for it before you start, then build it and share the finished link. Tillyard dates your plan, so anyone can see it came first.

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In detail
Writes a one-paragraph spec and three acceptance tests as the first entry of a log, dated before any work; keeps the log while building; sends the link at a fixed revision with a 300-word maker's note
What you leave with
A notebook page: your plan and three tests, dated entries with the gaps shown, your finished link and your note.
Who confirms it
Tillyard dated your plan before your finished link was added. Nobody else has run your tests yet, and your Record says so.
What goes on your résumé
Projects: Dorm Energy Estimator (own project): a Python tool that estimates room electricity cost from public utility rates; plan and 3 acceptance tests dated by Tillyard before the finished link was added
An example. Yours will say what you did.
When it is recorded
Once it has 3 entries, 1 week, the finished link, you can close it and put one line on your Record. The line starts as visible to you alone.

Not for here: structures, pressure systems, mains electricity, vehicles, medical devices, weapons, or advice to a real person on law, tax, medicine, engineering or investments.

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You need a membership to start. It is free to students.

Join with your college email to start Prove what you built

Before you start

You own what you make here. If you made it for a class, a lab or an employer, someone else may have a claim on it, so leave it out. You do this unpaid and by choice, and you do not work for Tillyard. You are keeping a record of something you chose to do.