![](https://i-invdn-com.akamaized.net/content/pic585429dba82e8de5560a4428c37ded88.jpg)
Leading cryptocurrency exchanges OKEx and Huobi Global will support the Ethereum (ETH) Constantinople hard fork which is estimated to happen between Jan. 14 and 18, according to a press release shared with Cointelegraph.
The Constantinople hard fork is an upgrade, which is supposed to fundamentally change the Ethereum blockchain, with the synchronous nodes update to the entire system. The hard fork encloses separate Ethereum Improvement Proposals (EIPs) in order to soften the transition from proof-of-work (PoW) to the more energy efficient proof-of-stake (PoS) consensus algorithm.