BTC held on orders will also be credited. Only the BTC held on your account is eligible for BTG.
Full details below. XCP/omni and associated assets not effected. Bitcoin Gold does not currently have: Fully formed consensus code, implemented replay protection, adequate code for testing and auditing. For more information, refer to our news page. Bitcoin Gold intends to perform a wallet balance snapshot at Bitcoin block 491,407 but the actual Bitcoin Gold network will launch publicly at a later undetermined date and time (the only guidance is the statement "after the launch on Nov. Update 10/22/2016: Update approximate snapshot block time. Trading will remain active during this time. If you have a Bitcoin (BTC) balance on Bittrex during the BTG snapshot block 491,407 occurring approximately on October 23, 11pm PT (6am UTC you will be additionally credited the equivalent amount of Bitcoin Gold (BTG) on a 1:1 basis. Disclaimer : This is a beta version of m, which is in the process of being tested before official release. Marked as pending) by block 491,263 you may not be credited with BTG. Bittrex will close deposits and withdrawals of Bitcoin 24 hours prior at block 491,263 to the BTG snapshot block 491,407 occurring approximately on October 23, 11pm PT (6am UTC). When considering adding tokens to Bittrex exchange we look at the risks involved.