Optec International Inc (OPTI)

[rainbowbudland]

Per Google:
An over-the-counter (OTC) market is a decentralized market in which market participants trade stocks, commodities, currencies, or other instruments directly between two parties and without a central exchange or broker.

Trading Platform Defined:
In finance, an electronic trading platform also known as an online trading platform, is a computer software program that can be used to place orders for financial products over a network with a financial intermediary.

Conclusion:
OTC Market is an Online Trading Platform

Notes:
OTC trades are NOT done with a broker