Dear all,
CALL now is listed on Catex, the deposit/trading are available on the following market
CALL/BTC, CALL/ETH
Global Crypto Alliance, first product is GCNews.io, is being built with the intent to disrupt the traditional news publishing industry using our unique reward system. Content consumers, as well as content creators, will now be rewarded. Publishers will be able to automate their campaigns and have a simple, cost-effective way to expand their reach. With this, all participants benefit. The system is built on the latest token standards ERC777, ERC1820 & ERC644. With our reward system, we target everyones needs - those of authors, publishers and readers. 
Website: https://gcalliance.io/
Whitepaper: https://gcalliance.io/wp-content/uploads/GCA_Greenpaper_V1.05-291019.pdf
Contract: https://etherscan.io/token/0xbbe761ea1447a20b75aa485b7bcad4837415d7d7
Thanks