You will receive an email 1 month prior to your certificate expiration with a coupon for 25% off the exam cost. In order to remain certified, submit the renewal fee and retake the exam prior to the certification expiration date. Upon passing the exam, you will receive email confirmation containing your new certificate ID. If you do not successfully complete the exam prior to the expiration date, you will be required to pay full price to recertify.

C4 is a non-profit organization run mostly by volunteers. If you possess knowledge about cryptocurrencies and would like to use this knowledge to help accurately measure this knowledge in others, we'd love to have you on one of our committees. Please contact us at info@cryptoconsortium.org.

C4's exams are compiled from a database of questions significantly larger than the exam itself. When being compiled, a few questions are randomly chosen from each of the topics within that certification's Common Body of Knowledge. While it should be rare, it's possible that two similar questions can be chosen from a single topic.

Your exam purchase includes one (1) retake. If you fail the second attempt, you will be able to retake it by paying the examination fee a second time. 

In order to maintain a high level of integrity of C4's exams, the results are kept private. This is to minimize the opportunity for cheating and ensure that anyone who successfully passes an examination truly posesses the level of knowledge associated with its certification.

C4 is a non-profit organization dedicated to measuring cryptocurrency knowledge in its applicants. The majority of the fees go to supporting our daily operations including costs associated with the development, hosting, and improvements of our website, our offices, educational materials, licensing fees for our third party vendors, and issuing certificates by mail to those who achieve certification.

We offer study guides to prepare for the Certified Bitcoin Professional exam and the Certified Ethereum Professional exam. We also have several other study materials available. View our options at https://cryptoconsortium.org/study-materials/. To learn about cryptocurrencies and blockchain projects from leading experts, view FREE videos on our YouTube channel.

There is also a lot of open-source information out there that will teach you much more than what is required to pass C4 exams. If you excel at self-study, the best way to learn is by teaching yourself!