Demo

Ask the demo bank whether it sent this

This is the Fromenance communication provenance demo, and nothing about it is mocked. There is a real fraud alert from JT Merlin Bank (demo), registered on the production API, a lure that imitates it, and the same public verify endpoint your customers would use. Paste either one and read the verdict, the locked wording, and the rule that produced it.

JT Merlin Bank (demo) verify page

This is the demo tenant, JT Merlin Bank (demo), on the production API with site keysk_pub_demo_jtmerlin. The latency you see is the latency your customers would see.

The real alert

We registered this fraud alert at send time, addressed tojane.doe@example.com. The footer carries the code twice on purpose: one copy usually survives whatever a mail client does on the way.

JT Merlin Bank

We noticed a card transaction

Hi Jane,

A purchase of $412.90 at ACME ELECTRONICS was made with your JT Merlin Bank Visa ending in 4471 on September 24 at 10:42 AM.

If this was you, no action is needed. If you do not recognize this transaction, review it in the app or call the number on the back of your card.

Review this transaction: https://www.jtmerlin.com/app/alerts/tx/98812?utm=email

Thank you,
JT Merlin Bank Fraud Team

Not sure this email is from JT Merlin Bank? Forward it to verify@jtmerlin.com or enter code KX73-PQ9G at jtmerlin.com/verify. Reference: KX73-PQ9G

JT Merlin Bank, Member FDIC. 1 Merlin Plaza, Wilmington, DE 19801. Privacy: https://www.jtmerlin.com/privacy

Ask the bank

Codes belong to one recipient. Send a code without the address it went to and we treat it as a copied footer, so it comes back Not verified. Change this address and watch the same code fail.

Notice what the reply does not do. It never quotes the suspicious message or repeats its links. It says only what the bank can stand behind: a registered communication matches, or none does.

Try these

Three things worth trying

The demo tenant is rate limited like any other site key, and what you paste here is stored on the demo tenant with the same retention as production. So please do not paste a real customer's message.