BTC Multiplier 28C

Identification

“BTC Multiplier 28C” does not appear to be a real person, company, or legitimate product brand. Rather, it is best understood as a label/variant name used by (or displayed on) the website shown in your link:

text http://btcmultiplier.com/games.php

In other words, it is most likely an internal “game/offer” identifier (e.g., a specific multiplier tier or page variant), not an identifiable individual.

What the site is associated with (context)

Multiple independent security/crypto sources describe “Bitcoin multiplier” sites (including BTC-Multiplier / btcmultiplier) as fitting a well-known scam pattern: promising to multiply (“double”, “28×”, etc.) your BTC after you send funds first, typically supported by fake “recent payouts” and other fabricated trust signals. (ccn.com)

Malwarebytes further reports that “Bitcoin multiplier” pages often function not only as scams, but can also be tied to malvertising/traffic-redirection schemes, and in at least some investigated cases were connected to exploit-kit activity and malware delivery. (malwarebytes.com)

Bottom line

• “BTC Multiplier 28C”: not a verifiable public entity; most likely a page/offer label on the site.
• btcmultiplier.com (and similar “multiplier” claims): widely described as fraudulent/scam behavior, and potentially unsafe to interact with. (ccn.com)