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Anti-Fraud & Suspicious Activity Policy

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 2026

Why does JP Sheet have an anti-fraud policy?

Our 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.

What does JP Sheet monitor for?

We monitor for these patterns of suspicious activity on our own platform:

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Automated bot traffic

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.

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Suspicious chassis-number patterns

Sequential or random chassis numbers, patterns suggesting an attacker is harvesting our database, or queries to chassis ranges with no real-world ownership signal.

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Re-sale of reports

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.

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Payment-fraud signals from Stripe and PayPal

Stolen cards, mismatched billing/shipping countries, suspiciously high-velocity orders, and chargebacks. Both providers flag risk scores — we act on them.

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Account abuse

Multiple accounts from the same person to abuse free-tier limits or one-time promotional codes; account takeovers; coordinated abuse from multiple IPs.

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Phishing and impersonation

Lookalike domains, fake "JP Sheet" social profiles, fraudulent emails sent to our customers in our name. Report any to us immediately.

What do we do when we detect fraud?

Depending on severity and confidence, we take one or more of the following actions:

  1. Warn — a polite message in the dashboard or by email asking the user to stop the behaviour
  2. Rate-limit — temporary throttle on the account, IP, or fingerprint
  3. Block — permanent block of the IP, fingerprint, or account
  4. Refund affected legitimate users — if a stolen card was used to buy a report for a recipient who is themselves a victim, we refund the legitimate cardholder and may continue to serve the recipient
  5. Cooperate with payment providers — confirm or contest chargebacks based on evidence, share fraud signals with Stripe / PayPal
  6. Cooperate with law enforcement — when we receive a valid legal request (warrant, subpoena, court order) from a competent authority, we cooperate within the scope of the request

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.

How can I report a suspicious seller or dealer?

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.

What red flags should buyers watch for?

From 21+ years of verification work, these are the patterns we see most often in fraudulent sales:

🚩 Refusal to share the chassis number

A legitimate seller will share the chassis number before payment — they have nothing to hide. Refusal is the single biggest red flag.

🚩 "Auction sheet" sent as a low-res image or PDF without a database match

Real auction sheets always have a database record. If your verification comes back "not found", the sheet may be fabricated.

🚩 Pressure to pay immediately to "secure" the car

Auction-style urgency from dealers ("if you don't pay today someone else will take it") is a classic pressure tactic.

🚩 Mileage that looks too clean

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.

🚩 Grade higher than the photos suggest

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.

🚩 Payment to a personal account or via cryptocurrency only

Legitimate exporters accept standard business payment methods. Crypto-only or personal-account requests are a red flag.

🚩 New website, no verifiable history

Check the seller's domain age (whois lookup), business registration, and reviews on neutral platforms.

🚩 Stock photos or photos with mismatched details

Different shadows, license plate edits, photoshopped damage — these are signs the photos aren't of the actual vehicle.

What buyer protections does JP Sheet offer?

✓ Full refund if we make a verification error

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.

✓ Manual search refund if no record found

Our $35 manual search comes with a 100% refund if our researchers cannot locate the auction record after contacting the auction house directly.

✓ Permanent report link, never deleted

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.

✓ Watermarked, fraud-resistant

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.

✓ Free pre-purchase consultation

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.

Does JP Sheet cooperate with law enforcement?

Yes — within strict limits.

🛡️ Report suspicious activity

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