JP Sheet exists because Japanese car buyers worldwide need protection from fraud. This page explains what we monitor for, what we do when we detect it, and how you can report suspicious activity โ both about our service and about sellers you're dealing with.
Last updated: 19 September 2026Our verification reports are used by buyers around the world to make significant purchasing decisions โ many people are paying thousands or tens of thousands of dollars on the strength of a chassis verification. The integrity of that report is everything.
Two kinds of fraud concern us:
This policy covers how we handle both.
We monitor for these patterns of suspicious activity on our own platform:
Scraping, brute-force search, automated chassis-number harvesting. We use rate limiting on the chassis decoder, search, and translation APIs โ and detect non-human patterns of activity.
Sequential or random chassis numbers, patterns suggesting an attacker is harvesting our database, or queries to chassis ranges with no real-world ownership signal.
Our terms prohibit re-sale of verification reports as a service. We detect this through usage patterns and watermark every report with a unique customer identifier.
Stolen cards, mismatched billing/shipping countries, suspiciously high-velocity orders, and chargebacks. Both providers flag risk scores โ we act on them.
Multiple accounts from the same person to abuse free-tier limits or one-time promotional codes; account takeovers; coordinated abuse from multiple IPs.
Lookalike domains, fake "JP Sheet" social profiles, fraudulent emails sent to our customers in our name. Report any to us immediately.
Depending on severity and confidence, we take one or more of the following actions:
Decisions are made by a person, not by an automated system alone โ if our system flags an account, a team member reviews before any permanent action is taken.
If you are dealing with a Japanese car seller, dealer, exporter or broker who is behaving suspiciously โ for example, refusing to share a chassis number, providing what looks like a fake auction sheet, or pressuring you to pay in unusual ways โ you can report them to us.
We can:
To report: email [email protected] with subject "Suspicious Seller Report" and include any evidence you have (screenshots, emails, photos of the documents you were sent, the seller's URL or contact).
We treat reports confidentially. We do not share the reporter's identity with the seller.
Japanese sheet fraud is usually a forged document. American vehicle fraud is usually a real car with a hidden past — and the tricks have names.
Title washing. A car is branded salvage in one state, then retitled in another that does not carry the brand across. The new title looks clean. NMVTIS holds the original brand, which is exactly why we search it rather than a single state.
Odometer rollback. Digital dashboards are easier to alter than the old mechanical ones. The defence is the reading history: every mileage figure on record, in date order. A reading lower than an earlier one is the clearest evidence there is, and our reports flag it automatically.
Flood cars after a hurricane. They are cleaned, dried and moved to a dry state to sell. A flood brand on the title, or an insurance total-loss record, is what catches them.
“Rebuilt” sold as clean. A rebuilt title is legal to sell — hiding it is not. It is a title brand, and it shows.
Rate limits. Our APIs cap how many lookups and payment attempts one connection can make. A real customer never notices; a script hits the ceiling quickly.
Payments are verified with the processor, never with the browser. We ask Stripe or PayPal directly whether a payment succeeded and for how much, so a faked success message from a browser buys nothing. Crypto payments are confirmed by a signed webhook we check before writing anything.
Reports are not personal data lookups. Our VIN reports return vehicle records only — never an owner’s name, address or contact details. Using our service to research a person is prohibited, and we close accounts that try.
From verifying Japanese auction records across millions of vehicles, these are the patterns we see most often in fraudulent sales:
A legitimate seller will share the chassis number before payment โ they have nothing to hide. Refusal is the single biggest red flag.
Real auction sheets always have a database record. If your verification comes back "not found", the sheet may be fabricated.
Auction-style urgency from dealers ("if you don't pay today someone else will take it") is a classic pressure tactic.
A 2008 vehicle with 35,000 km is plausible but rare. Always verify mileage against the auction record โ odometer rollback is one of the most common frauds.
A "Grade 4.5" car with obvious dents or repaint work is almost certainly a re-graded vehicle. The auction sheet does not lie; the seller's description might.
Legitimate exporters accept standard business payment methods. Crypto-only or personal-account requests are a red flag.
Check the seller's domain age (whois lookup), business registration, and reviews on neutral platforms.
Different shadows, license plate edits, photoshopped damage โ these are signs the photos aren't of the actual vehicle.
If we deliver an incorrect report (wrong vehicle, wrong grade, wrong mileage compared to the original auction record), we refund you in full and re-verify at no cost.
Our $35 manual search comes with a 100% refund if our researchers cannot locate the auction record after contacting the auction house directly.
Every report has a permanent public URL. You can share it with your bank, mechanic, shipping company, or dispute resolver. It never expires and never moves.
Every report is watermarked with a unique customer identifier. If someone shows you a JP Sheet report claiming it covers their vehicle, you can verify by entering the chassis on our site.
If you are unsure about a deal, email us the chassis number to [email protected] before paying. We will verify and give you a candid opinion at no charge.
Yes โ within strict limits.
See something concerning about a seller you're dealing with, or activity on JP Sheet itself? We act on every report.
Email [email protected]Related: Acceptable Use ยท Refund Policy ยท Money-Back Guarantee ยท Security Disclosure
