“The most famous form of Bitcoin regulation around the world is New York’s BitLicense, a regulatory framework developed by the New York Department of Financial Services. The way BitLicense works is that any Bitcoin-related company offering any service to their customers – with or without touching any of their funds – would be forced to keep a record of personal information for each user. For example, if you run a Bitcoin mining pool that is used by at least one person in New York, you will need to obtain that person’s name, address and email address. Furthermore, you will be required to turn over this information if the state of New York ever asks for it.”
http://digitalmoneytimes.com/crypto-news/bitlicense-forces-mining-pool-btcguild-to-shut-down/