A testnet is an alternative blockchain used for conducting experiments without using actual currency. This term is short for ‘testing network’; therefore, any changes done on this network do not affect the main blockchain. Testnets are meant to be used solely by developers; however, some users may also be invited to help test new features.Testnets are useful since it allows developers to make changes without worrying about affecting the main chain. The coins used in this separate network do n...