EIP 1679: Hardfork Meta: Istanbul Source

AuthorAlex Beregszaszi, Afri Schoedon
Requires 1716


This meta-EIP specifies the changes included in the Ethereum hardfork named Istanbul.


  • Codename: Istanbul
  • Activation: TBD

Included EIPs

  • TBD

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

Tentatively Accepted EIPs

Istanbul 2

  • EIP-663: Unlimited SWAP and DUP instructions
  • EIP-1057: ProgPoW, a Programmatic Proof-of-Work
    • There is a pending audit, above and beyond standard security considerations, that should be evaluated prior to inclusion.
  • EIP-1380: Reduced gas cost for call to self
  • EIP-1702: Generalized account versioning scheme
  • EIP-1962: EC arithmetic and pairings with runtime definitions
    • replaces EIP-1829
  • EIP-1985: Sane limits for certain EVM parameters
  • EIP-2045: Particle gas costs for EVM opcodes
  • EIP-2046: Reduced gas cost for static calls made to precompiles

Rejected/Withdrawn EIPs

  • EIP-615: Subroutines and Static Jumps for the EVM - Withdrawn
  • EIP-1109: PRECOMPILEDCALL opcode (Remove CALL costs for precompiled contracts)
    • requirement of EIP-1962
  • EIP-1283: Net gas metering for SSTORE without dirty maps
    • replaced by EIP-2200
  • EIP-1352: Specify restricted address range for precompiles/system contracts
  • EIP-1559: Fee market change for ETH 1.0 chain
  • EIP-1706: Disable SSTORE with gasleft lower than call stipend
    • replaced by EIP-2200
  • EIP-1959: New Opcode to check if a chainID is part of the history of chainIDs
  • EIP-1803: Rename opcodes for clarity
  • EIP-1829: Precompile for Elliptic Curve Linear Combinations
    • replaced by EIP-1962
  • EIP-1930: CALLs with strict gas semantic. Revert if not enough gas available.
  • EIP-1965: Method to check if a chainID is valid at a specific block Number
  • EIP-2014: Extended State Oracle - Withdrawn
  • EIP-2025: Funding Eth1.x with Developer Block Rewards - Withdrawn
  • EIP-2026: State Rent H - Fixed Prepayment for accounts
  • EIP-2027: State Rent C - Net contract size accounting
  • EIP-2029: State Rent A - State counters contract
    • requirement of EIP-2031
  • EIP-2031: State Rent B - Net transaction counter
  • EIP-2035: Stateless Clients - Repricing SLOAD and SSTORE to pay for block proofs

Proposed EIPs


  • 2019-05-17 (Fri) hard deadline to accept proposals for “Istanbul”
  • 2019-07-19 (Fri) soft deadline for major client implementations
  • 2019-09-04 (Wed) projected date for testnet network upgrade (Ropsten, Görli, or ad-hoc testnet)
  • 2019-10-16 (Wed) projected date for mainnet upgrade (“Istanbul”)


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