Generate Private and Public keys:
Go to the SpectroCoin page and open the
"Project" section, then click on your project. Select "Edit Project" and then click the "Generate" button (next to the Public key field). You will get an automatically generated private key – download and save it. A matching Public key will be generated automatically and added to your project.
Go to Setup → Payments → Payment Gateways → All Payment Gateways.
Select "Bitcoin provided by SpectroCoin" and press the "Activate" button.
Enter your Merchant ID and Project ID, and Private key which you generated before.