As I said: commendable. The worry, however is in step 3. No matter what the intention is (and how commendable), the use of possibly/probably copyrighted material is the worrysome part. There should be consent a prori of the copyright holder and not consent a posteriori.
The person (in this case Carson Cooman) is perhaps dead against block chain and does not want his name associated with it. Or he/she may have another reason to be against it. He/she, and any musician you want to syndicate, should have first say in whether they want their material to be used in this way. It is for them to decide, not for you. Not only from a legal point of view but from a moral point of view as well.

So, I do hope you contacted the artists you published material of beforehand. I really think you should.