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 — both about our service and about sellers you're dealing with.
Last updated: 29 May 2026Our verification reports are used by buyers around the world to make significant purchasing decisions — 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 — 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 — 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 — 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 — for example, refusing to share a chassis number, providing what looks like a fake auction sheet, or pressuring you to pay in unusual ways — 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.
From 21+ years of verification work, these are the patterns we see most often in fraudulent sales:
A legitimate seller will share the chassis number before payment — 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 — 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 — 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, send us the chassis number on WhatsApp before paying. We will verify and give you a candid opinion at no charge.
Yes — 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 · Refund Policy · Money-Back Guarantee · Security Disclosure