EIPs/EIPS/eip-draft_hfmeta_metropolis.md

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## Preamble
EIP: <to be assigned>
Title: Hardfork Meta: Metropolis
Author: Alex Beregszaszi
Type: Standard Track
Category: Core
Status: Draft
Created: 23/04/2017
Requires: 86, 96, 98, 100, 140, 196, 197, 198, 211, 214
## Abstract
This specifies the changes included in the hard fork named Metropolis.
## Specification
- Codename: Metropolis
- Activation:
- Block not specified yet
- Included EIPs:
- EIP 86 (Abstraction of transaction origin and signature)
- EIP 96 (Blockhash refactoring)
- EIP 98 (Removal of intermediate state roots from receipts)
- EIP 100 (Change difficulty adjustment to target mean block time including uncles)
- EIP 140 (REVERT instruction in the Ethereum Virtual Machine)
- EIP 196 (Precompiled contracts for addition and scalar multiplication on the elliptic curve alt_bn128)
- EIP 197 (Precompiled contracts for optimal ate pairing check on the elliptic curve alt_bn128)
- EIP 198 (Precompiled contract for bigint modular exponentiation)
- EIP 211 (New opcodes: RETURNDATASIZE and RETURNDATACOPY)
- EIP 214 (New opcode STATICCALL)
## Copyright
Copyright and related rights waived via [CC0](https://creativecommons.org/publicdomain/zero/1.0/).