From http://www.goingpublicinformation.com/Selling_Stock_Getting_Ticker_Symbol.htm:

"You have to have the Financial Institution Regulatory Authority, called FINRA, issue you a Ticker Symbol. The SEC does not issue ticker symbols......The form submitted to FINRA to obtain a Ticker Symbol is called Form 211"

Also, we can use the link below to monitor name/symbol changes:

http://www.otcmarkets.com/otcqx/marketActivity/symbol-name-changes

To me, any of those 4 symbols mentioned (TXOH, SOTM, TEXT, SAFE) seems good