The main developers of Ethereum (ETH) have postponed the activation of the Constantinople hard fork until the end of February. The update is now set to be implemented at the ETH 7,280,000 block, as announced by a team leader at Ethereum, Peter Szilagyi, in a Tweet January 18th.
In his announcement, Szilagyi explains that the activation will take place at block number 7,280,000, which should be extracted on February 27, 2019. The update will be implemented as "a single fork on mainnet and a post-Constantinople-fixup "fork on the testnet to put them back online with the main network. "
The new deadline comes in the wake of an unexpected delay on a recently discovered security vulnerability that allows an indentation attack, which was detected in the Constantinople code by the intelligent audit firm ChainSecurity.
The vulnerability allegedly allows a potential attacker to steal cryptocurrency from an intelligent contract on the network by repeatedly requesting funds while providing false data on the actual ETH balance of the attacker. To repair the loophole, the update was postponed until further notice.
The upcoming constant fork of Constantinople is an update of the ETH network, which includes separate EIP (Ethereum Improvement Proposals) proposals to mitigate the transition from the current job test (PoW) to a more efficient test of interest from the energy point of view (PoS) consent algorithm.
Once implemented, the improvements would substantially change the Ethereum blockchain, preventing any backwards compatibility, which means that the network nodes need to update in sync with the whole system or continue to function as a separate blockchain entity.
As reported by Cointelegraph in recent weeks, the major exchanges of cryptocurrencies including Coinbase, Kraken, Huobi and OKEx have confirmed their support for Constantinople.