ZadeNor AI
Back to Blog
Web3 & Blockchain

Ethereum Constantinople Upgrade Announcement

December 8, 2025
5 min
2,186 views
By ZadeNor AI Team
Ethereum Constantinople Upgrade Announcement

Ethereum Constantinople Upgrade Announcement

The Countdown Begins: Ethereum Constantinople Upgrade

As the Ethereum network continues to evolve, a significant upgrade is on the horizon. The Constantinople upgrade, scheduled to occur at block number 7,080,000, promises to bring substantial improvements to the network. In this article, we'll delve into the details of the upgrade, its implications, and what it means for users, developers, and the broader Ethereum ecosystem.

What is Constantinople?

Constantinople is the name given to this network upgrade, which follows in the footsteps of previous upgrades such as Spurious Dragon and Byzantium. This upgrade represents a significant milestone in the ongoing development of the Ethereum protocol, with a focus on improving performance, security, and usability.

What You Need to Know as an Ethereum User

If you're an Ethereum user or ether holder, there's no need to take any action unless you're informed to do so by your exchange or wallet service. Most users will be unaffected by the upgrade, and their wallets and exchanges will automatically adapt to the new protocol.

The Importance of Upgrading as a Node Operator or Miner

However, node operators and miners need to take action to ensure a smooth transition. To participate in the upgrade, you'll need to download the latest version of your Ethereum client. The recommended versions are:

  • Latest geth client (v1.8.20)
  • Latest Parity client (v2.1.11-stable)
  • Latest Harmony client (v2.3 Build 72)
  • Latest Pantheon client (v0.8.3)
  • Latest Trinity client (v0.1.0-alpha.20)
  • Latest version of Ethereum Wallet/Mist (v0.11.1)

If you fail to upgrade, your client will sync to the pre-fork blockchain, leaving you stuck on an incompatible chain. This will prevent you from sending ether or operating on the post-upgrade Ethereum network.

What Happens During a Network Upgrade?

A network upgrade involves changes to the underlying Ethereum protocol, which are written into the various Ethereum clients. The protocol changes are activated at a specific block number, and any nodes that have not been upgraded to the new ruleset will be abandoned on the old chain.

Changes in Constantinople

The Constantinople upgrade includes several significant changes, which are defined using Ethereum Improvement Proposals (EIPs). Some of the key changes include:

  • EIP 145: Bitwise Shifting Instructions in EVM: This EIP adds native bitwise shifting to the Ethereum Virtual Machine (EVM), making it cheaper and easier to perform certain operations on-chain.
  • EIP 1014: Skinny CREATE2: This EIP introduces a new opcode that allows interactions with addresses that have yet to be created, making it easier to use state-channel use cases.
  • EIP 1052: EXTCODEHASH Opcode: This EIP introduces a new opcode that returns the keccak256 hash of a contract's code, making it cheaper to perform certain operations on-chain.
  • EIP 1283: Net Gas Metering for SSTORE without Dirty Maps: This EIP proposes net gas metering changes for the SSTORE opcode, making it cheaper to perform certain operations on-chain.
  • EIP 1234: Constantinople Difficulty Bomb Delay and Block Reward Adjustment: This EIP delays the difficulty bomb for approximately 12 months and reduces the block rewards to adjust for the ice age delay.

Why This Matters

The Constantinople upgrade represents a significant step forward for the Ethereum network, with improvements to performance, security, and usability. The changes included in this upgrade will have a positive impact on the broader Ethereum ecosystem, making it easier for developers to build and deploy applications on the network.

Conclusion

The Constantinople upgrade is a significant milestone in the ongoing development of the Ethereum protocol. With its focus on improving performance, security, and usability, this upgrade promises to bring substantial benefits to users, developers, and the broader Ethereum ecosystem. As the upgrade approaches, it's essential to stay informed and take action to ensure a smooth transition. By doing so, we can continue to build a more secure, scalable, and user-friendly Ethereum network.


Source: https://blog.ethereum.org/en/2019/01/11/ethereum-constantinople-upgrade-announcement

About the Author

ZadeNor AI Team is a leading expert in WEB3 & BLOCKCHAIN, contributing to cutting-edge research and development in the field.