About Checksum
Why we built Checksum
We kept finding study guides that read like unchecked AI output. Amazon’s publishing rules say:
We require you to inform us of AI-generated content (text, images, or translations) when you publish a new book or make edits to and republish an existing book through KDP. (Read the source: Content Guidelines, Kindle Direct Publishing)
If you used an AI-based tool to create the actual content (whether text, images, or translations), it is considered "AI-generated," even if you applied substantial edits afterwards. (Read the source: Content Guidelines, Kindle Direct Publishing)
You are not required to disclose AI-assisted content. (Read the source: Content Guidelines, Kindle Direct Publishing)
So every answer on Checksum links to the line of official documentation it came from. Items marked Pending review are not yet approved by a person.
Before you buy any study guide, ask: can you check where each claim comes from?
The Checksum teamCorratech LLC
Who runs Checksum
Corratech LLC. Write to [email protected].
How it stays free
No paid tier, no ads, no card field. Optional tips on the support page pay for hosting. They go to Corratech LLC and are not tax-deductible.
What we promise
- No fake timers, fake reviews, invented statistics or pass guarantees.
- No exam dumps. See the no-dumps policy.
- You can have your data exported or deleted any time. See privacy.
- Report a confirmed error and you can be thanked by name.