Roboserver Systems (RBSY)

[Dr Gator]

This is the Transfer agent:
https://www.otcmarkets.com/learn/service-providers/2234?t=6
located in Las Vegas, NV

Link about says about PST

Pacific Stock Transfer (PST) is a leading SEC registered and DTC FAST approved Transfer Agency & Registrar. In addition to core transfer agent services, PST offers SEC Filings (EDGAR/XBRL), Press Releases, Annual Meeting Administration, Paying Agent Services, Canadian Dual Listings, and more. Priding itself on a flexible, cost-effective pricing model with the highest level of customer service available in the market, PST is an ideal match for issuers who are going public, already listed on OTC Markets, or have eventual plans to uplist to NASDAQ or NYSE American