BTC Multiplier 1689B

BTC Multiplier 1689B appears to be part of a documented fraud/scam operation rather than a legitimate, publicly identifiable individual or organization. Multiple security researchers and news outlets classify the related “Bitcoin multiplier” sites (including BTC Multiplier) as Ponzi/ Scam schemes designed to lure users into sending Bitcoin with promises of guaranteed, rapid returns, which are not supported by any credible financial mechanism. Reports describe the operators behind such sites as anonymous or pseudonymous, with no transparent, verifiable principals. In short: there is no verifiable person or entity publicly linked to BTC Multiplier 1689B; the available information from security researchers and industry press brands the site as a fraudulent scheme. (malwarebytes.com)

(Note: If you want, I can add a brief summary of common red flags associated with BTC multiplier schemes.)