There has been an interesting topic on this board related to new-old cryptocurrency Bytecoin (BCN), which emerged recently but is apparently 1 year 8 months old. The name is confusing, since there is another Bytecoin (BTE), which is around 1 year old, but this is not where it gets interesting. Unlike BTE, BCN is not a Bitcoin fork (or rumored not to be such, didn't check the source code myself), but is rather based on some sort of "CryptoNote" technology.