Hello to all and congratulations for your web site.
I'd like to report exactly the same scam from WhatsApp. I thankfully understood that it was a scam but I kept in contact with them in order to acquire as much information as possible.
The modulus operanti is the same one that is reported from other users but for my case I was contacted from a supposedly Japanese girl with South Korean characteristics :) Initially she called me from the following UK EE number under the name of "Yumiko":
+447376325409
When I asked her how she acquired a British number while she lives in Japan, she told me that her mother re-married someone from UK and she kept the number. When I challenged "her" about the way "she" found my number, "she" lost it and she abruptly cut communication because "she" was hurt from my luck of belief.
After the first contact she called me from the Japanese number: +819073573780
They try to be so persuasive that they actually put an Asian women to call you!!! I received two phone calls and I actually had conversation with a very cute Asian girl who despite being fluent in written English, she couldn't understand a world while speaking to her on the phone.
Also she sent me a white paper for the BCSC cryptocurrency from the following email address:
新野由美子
The person who initially got in contact with me is very clever and cultivated but I understood that there are multiple persons behind the WhatsApp account because they have different style of writing.
As with the previously reported cases, she told me that she has an uncle in the Financial Services Agency and she offered to help me with investing in cryptocurrency in the following web site:
https://coinnestegg.com
The conversation with this person is very friendly in order to make you trust "her" and it can last for almost two weeks but their story is full of inconsistencies.