For the record - I am not technically savvy regarding most of this stuff...but...I created my E-Trade account in about 10 minutes, it cost me nothing, and it is was very easy to link my fiat checking account and deposit funds...no registration required...similar experience with PayPal...the most time consuming part was verifying my checking account with PayPal and even that was fairly user friendly...I understand there are some technical requirements of the blockchain to ensure security and efficiency...however, we need to keep in mind that account registration needs to be as simple and painless as possible...and as similar to various fiat account creations as possible...if we are interested in attracting the outside world...which we better be.