Strong evidence, we can see BCN website domain name, the WHOIS information:

Domain Name:BYTECOIN.ORG
Domain ID: D162497614-LROR
Creation Date: 2011-06-11T03:36:44Z
Updated Date: 2014-05-12T11:50:51Z
Registry Expiry Date: 2014-06-11T03:36:44Z
Sponsoring Registrar:eNom, Inc. (R39-LROR)
Sponsoring Registrar IANA ID: 48


This shows that the BCN domain name was registered in 2011.