Ethereum Blockchain - Istanbul Upgrade

Istanbul is the upcoming upgrade of Ethereum blockchain expected to be on mainnet in October - November 2019.


In this post we are going to provide you updated information update about Istanbul based on the discussions at Ethereum All Core Dev calls and ACD Gitter.

Stay tuned!!

Important updates

(Last Updated: Sep 06, 2019)
  • All clients implemented all EIPs. Some more discussion around EIP-152 (Blake 2b) is continued.
  • Cat Herders will write a blog about EIP-1884/SLOAD issues and concerns. It is also being discussed at Eth Magician.
  • Istanbul will be on Testnet around October 2nd, 2019 depending on the block number.
  • Mainnet HF date not decided yet.


Hardfork Meta: Istabul

Accepted EIPs

  • EIP-152: Add Blake2 compression function F precompile
  • EIP-1108: Reduce alt_bn128 precompile gas costs
  • EIP-1344: Add ChainID opcode
  • EIP-1884: Repricing for trie-size-dependent opcodes
  • EIP-2028: Calldata gas cost reduction
  • EIP-2200: Rebalance net-metered SSTORE gas cost with consideration of SLOAD gas cost change

Client Status

  • Client status can be tracked here.
    • Geth: All EIPs merged.
    • Pantheon: All EIPs merged.
    • Nethermind: All applicable EIPs merged.
    • Aleth: 1 open (EIP-2200), rest applicable EIPs are merged.
    • Parity: 1 open (EIP-152 (Blake 2b)), and rest applicable EIPs are merged.
    • Trinity: 1 issue (EIP-152 (Blake 2b)), rest EIPs are merged.

Read more article about Istanbul here


Next announced Ethereum upgrade is Hardfork - Berlin


Disclaimer: This is not an investment advice and should NOT be viewed as project endorsement by EtherWorld. Readers are suggested to do their research before investing into any project.

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