Could it be you're thinking of copyright as in ©?
What I do is write copy, meaning any text designed to explain a product or service and sell it to the target audience, be this text for an ad, website or any other medium. Copywriting is indeed a world away from Computer Science and it's a craft I have honed over 10+ years of working in the business with other marketers, copywriters and mentors.
In a nutshell, what I offer the Cryptocurrency community is the best of both worlds: a solid grasp of the technology, together with the marketing and communication skills to make any cryptocurrency-related business easy to understand and attractive to the public at large.
Regarding rates, I charge 90 mBTC per hour (a bit of a discount on my dollar rate of $75 per hour) and can quote on projects that are clearly defined in scope and time frame.