There is nothing in the NY proposed regulations that would affect any person that simply mines and/or holds bitcoin on their own behalf. The NY regulations only affect people that hold bitcoins on behalf of others and who trade bitcoin for fiat in the state of NY.
... or convert one virtual currency for another
... or operate a mining pool (w/ exception of pools like eligius)
... or possibly even creating a new cryptocurrency.
Virtual Currency Business Activity means the conduct of any one of the following types of activities
involving New York or a New York Resident:
(1) receiving Virtual Currency for transmission or transmitting the same;
(2) securing, storing, holding, or maintaining custody or control of Virtual Currency on behalf of others;
(3) buying and selling Virtual Currency as a customer business;
(4) performing retail conversion services, including the conversion or exchange of Fiat Currency or
other value into Virtual Currency, the conversion or exchange of Virtual Currency into Fiat Currency or other
value, or the conversion or exchange of one form of Virtual Currency into another form of Virtual Currency; or
(5) controlling, administering, or issuing a Virtual Currency.
http://www.dfs.ny.gov/about/press2014/pr1407171-vc.pdf