How to create custom service and characteristics

As an example of the output I get from the tinyB / C++ code.. It also seems as if the Puck appears as 2 devices with an almost identical UUID:

Bluetooth manager started...

Device discovery..

Discovered devices: 
Class = BluetoothDevice Path = /org/bluez/hci0/dev_F1_F9_F8_7F_B3_CF Name = DfuTarg Connected = 0 

Class = BluetoothDevice Path = /org/bluez/hci0/dev_F1_F9_F8_7F_B3_CE Name = Puck.js b3ce Connected = 0 

Connecting to device..0xcf0b70

Fetch services..

Class = BluetoothGattService Path = /org/bluez/hci0/dev_F1_F9_F8_7F_B3_CE/se­rvice000b UUID = 6e400001-b5a3-f393-e0a9-e50e24dcca9e Device = /org/bluez/hci0/dev_F1_F9_F8_7F_B3_CE 

Class = BluetoothGattService Path = /org/bluez/hci0/dev_F1_F9_F8_7F_B3_CE/se­rvice000a UUID = 00001801-0000-1000-8000-00805f9b34fb Device = /org/bluez/hci0/dev_F1_F9_F8_7F_B3_CE