EIPs

Ethereum Improvement Proposals (EIPs) describe standards for the Ethereum platform, including core protocol specifications, client APIs, and contract standards.

Contributing

First review EIP-1. Then clone the repository and add your EIP to it. There is a template EIP here. Then submit a Pull Request to Ethereum's EIPs repository.

EIP status terms

• Draft - an EIP that is open for consideration
• Accepted - an EIP that is planned for immediate adoption, i.e. expected to be included in the next hard fork (for Core/Consensus layer EIPs).
• Final - an EIP that has been adopted in a previous hard fork (for Core/Consensus layer EIPs).
• Deferred - an EIP that is not being considered for immediate adoption. May be reconsidered in the future for a subsequent hard fork.

EIPs under consideration

Number	Title	Author	Type	Layer	Status
5	Gas Usage for RETURN and CALL* [Note: Unneccessary if 211 is accepted]	Christian Reitwiessner	Standard	Core	Draft
211	New opcodes: RETURNDATASIZE and RETURNDATACOPY	Christian Reitwiessner	Standard	Core	Draft
214	New opcode STATICCALL	Buterin, Reitwiessner	Standard	Core	Draft

Accepted EIPs (planned for adoption)

Number	Title	Author	Type	Layer	Status
86	Abstraction of transaction origin and signature	Vitalik Buterin	Standard	Core	Accepted
96	Blockhash refactoring	Vitalik Buterin	Standard	Core	Accepted
98	Removal of intermediate state roots from receipts	Vitalik Buterin	Standard	Core	Accepted
100	Change difficulty adjustment to target mean block time including uncles	Vitalik Buterin	Standard	Core	Accepted
140	REVERT instruction in the Ethereum Virtual Machine	Beregszaszi, Mushegian	Standard	Core	Accepted
196	Precompiled contracts for addition and scalar multiplication on the elliptic curve alt_bn128	Reitwiessner	Standard	Core	Accepted
197	Precompiled contracts for optimal Ate pairing check on the elliptic curve alt_bn128	Buterin, Reitwiessner	Standard	Core	Accepted
198	Precompiled contract for bigint modular exponentiation	Vitalik Buterin	Standard	Core	Accepted

Finalized EIPs (standards that have been adopted)

Number	Title	Author	Type	Layer	Status
2	Homestead Hard-fork Changes	Vitalik Buterin	Standard	Core	Final
6	Renaming Suicide Opcode	Hudson Jameson	Standard	Interface	Final
7	DELEGATECALL	Vitalik Buterin	Standard	Core	Final
8	devp2p Forward Compatibility Requirements for Homestead	Felix Lange	Standard	Networking	Final
150	Gas cost changes for IO-heavy operations	Vitalik Buterin	Standard	Core	Final
155	Simple replay attack protection	Vitalik Buterin	Standard	Core	Final
160	EXP cost increase	Vitalik Buterin	Standard	Core	Final
161	State trie clearing (invariant-preserving alternative)	Gavin Wood	Standard	Core	Final
170	Contract code size limit	Vitalik Buterin	Standard	Core	Final