NEW YORK, Oct. 24, 2017 /PRNewswire/ — OTC Markets Group Inc. (OTCQX: OTCM), operator of financial markets for 10,000 U.S. and global securities, today announced Metalla Royalty & Streaming Ltd. (CSE: MTA; OTCQX: MTAFF), Canada-based precious metals royalty and streaming company, has…
