When we say open source, we mean that source codes are not encrypted.
And what does this mean compared to other projects? What makes your unencrypted services better than them since most of the time they're also unencrypted (but not disclosed to the public, hence closed source). I'm pretty sure you understand the differences and just use the term for marketing purpose, but keep in mind that you'll get into trouble sooner or later if one of your experienced customers find out.