Bitmark is striving to be a world class reputation platform. Therefore, there cannot be any fragmentation between various services that utilize marking. Bitmark Passport will solve this issue by creating a universal reputation profile for users; so your reputation follows you around the web!
Many different types of authentication are supported as listed below.
Key pairs are typically based on 2048 bit RSA keys that live inside an X.509 certificate. Most identity providers allow generation of a key pair or it can be done manually.
openssl can also be used to create a key pair
What we can do is take a hash of the canonical form of certain fields (ie public key) and put it in the block chain. If the user wants. This gives a proof of longevity. The older the ID is a vector for reputation.
Could even do a proof of burn, to protect against sock puppets.