Byzantium implemented

Hard fork of Etereum successfully implemented at 16th of October 2017, 05.22 UTC
16 October 2017   1675

On Monday, October 16, at 05.22 UTC on the block 4,370,000 in the Ethereum network, the previously planned hardfork was implemented.

Byzantium's hard work has made the following changes to the Ethereum blockchain:

- delayed the "complexity bomb" for another 18 months;
- speed of blocks confirmation increased;
- Reduced the reward for the block from 5 to 3 ETH;
- added zk-SNARK elements, which are designed to introduce new privacy features, currently found in crypto-currencies such as Zcash;
- expanded the capabilities of the virtual machine Ethereum, etc.

The Metropolis hardfork was first introduced on the Ethereum roadmap in 2015. Byzantium is the first part of a major upgrade of Metropolis. Before activating of Metropolis in thenext year, there will be another second, which will be called Constantinople.

Constantinople Hardfork Code to be Included in Geth

Go-ethereum (Geth) v1.8.20 assumes that hardfork in the main Ethereum network will take place at block 7,080,000 (approx. between 14th - 19th Jan 2019)
13 December 2018   106

Developers of Geth, one of the most popular clients of Ethereum, presented a new version of the software with the included code of the upcoming hard fork Constantinople.

Go-ethereum (Geth) v1.8.20 assumes that hardfork in the main Ethereum network will take place at block 7,080,000.

Consensus regarding the block number for activating hard forks was reached last week during a regular video conference of leading Ethereum developers. According to Afri Shedona, release manager of another popular client of the network Parity, a block of 7,080,000 will be mined between January 14 and 18, 2019.

At the same time, Ethereum Foundation’s head of security noted that the new version of the go-ethereum client would contain a kind of “emergency switch” that would postpone the upgrade if something went wrong.

Originally scheduled for November, the Constantinople contains a number of changes and code optimizations designed to ease the transition to the Proof-of-Stake algorithm. In particular, they include the transfer by 18 months of the so-called “bomb of complexity”, which contributes to timely upgrades, and also suggests a decrease in the reward to miners from 3 to 2 ETH for the mined block.