BITTREX (https://www.bittrex.com/Market/Index?MarketName=BTC-GRS)
https://www.bittrex.com/Market/Index?MarketName=BTC-GRS
BITSQUARE (https://bitsquare.io/)
https://bitsquare.io/
Cryptopia (https://www.cryptopia.co.nz/Exchange/?market=GRS_BTC)
https://www.cryptopia.co.nz/Exchange/?market=GRS_BTC
C-CEX (https://c-cex.com/?p=grs-btc)
https://c-cex.com/?p=grs-btc
Livecoin (https://www.livecoin.net/ru/trade/index?currencyPair=GRS%2FBTC)
https://www.livecoin.net/en/trade/index?currencyPair=GRS%2FBTC