http://api.zb.com/data/ticker
http://api.zb.com/data/depth
http://api.zb.com/data/trades
http://api.zb.com/data/getTrades?since=200
http://api.zb.com/data/ltc/ticker
http://api.zb.com/data/ltc/depth
http://api.zb.com/data/ltc/trades
http://api.zb.com/data/ltc/getTrades?since=10