The recent downfall of Bitcoin price was attributed to the potential split or hardfork of Bitcoin, as reported by some mainstream financial media like 36kr and Sina in China. Aside from the lobbying of mining pools, support of exchanges is of critical importance. Although ETC was first traded on Bitsquare, Poloniex was actually the one that resurrects Ethereum Classic with abundant liquidity in the Ethereum hardfork 2016.
So far BTCC and Yunbi have released formal statement regarding the potential fork of Bitcoin network. OKCoin will support both coins if there is a split. Huobi is still studying the situation.
Bixin, aka haobtc, will stick to the “one bitcoin only” policy and always follow the longest blockchain with 90% hashrate.
http://news.8btc.com/okcoin-to-support-both-coins-and-bixin-sticks-to-one-bitcoin-onlyThis is just an additional information. I got a notification from Bitfinex that they are having a test run (though test run is not the word that they used) in their exchange to have BTC and BTU, as a contingency plan if
BTC will be going for a hard fork. I logged in to my account and already saw that some of the people there are already trading those, I must say, "tokens". On the other hand, I emailed the devs of "Bitcoin Wallet" (an android wallet app) and asked about their plans if there will be any hard fork and this is their answer:
Bitcoin Wallet always follows the chain with the most "proof of work"
(aka "the longest chain"). What happens to your coins depends on the
specific rules of the fork.