Ethereum Improvement Proposals (EIPs) describe standards for the Ethereum platform, including core protocol specifications, client APIs, and contract standards.
First review [EIP-1](EIPS/eip-1.md). Then clone the repository and add your EIP to it. There is a [template EIP here](eip-X.md). Then submit a Pull Request to Ethereum's [EIPs repository](https://github.com/ethereum/EIPs).
| [100](https://github.com/ethereum/EIPs/issues/100) | Change difficulty adjustment to target mean block time including uncles | Vitalik Buterin | Core | Final |
| [137](EIPS/eip-137.md) | Ethereum Domain Name Service - Specification | Nick Johnson | ERC | Final |
| [140](https://github.com/ethereum/EIPs/pull/206) | REVERT instruction in the Ethereum Virtual Machine | Alex Beregszaszi, Nikolai Mushegian | Core | Final |
| [141](EIPS/eip-141.md) | Designated invalid EVM instruction | Alex Beregszaszi | Core | Final |
| [150](EIPS/eip-150.md) | Gas cost changes for IO-heavy operations | Vitalik Buterin | Core | Final |
| [181](EIPS/eip-181.md) | ERC-181 ENS support for reverse resolution of Ethereum addresses | Nick Johnson | ERC | Final |
| [190](EIPS/eip-190.md) | ERC-190 Ethereum Smart Contract Packaging Standard | Merriam, Coulter, Erfurt, Catalano, Matias | ERC | Final |
| [196](https://github.com/ethereum/EIPs/pull/213) | Precompiled contracts for addition and scalar multiplication on the elliptic curve alt_bn128 | Christian Reitwiessner | Core | Final |
| [197](https://github.com/ethereum/EIPs/pull/212) | Precompiled contracts for optimal Ate pairing check on the elliptic curve alt_bn128 | Vitalik Buterin, Christian Reitwiessner | Core | Final |
| [198](https://github.com/ethereum/EIPs/pull/198) | Precompiled contract for bigint modular exponentiation | Vitalik Buterin | Core | Final |
| [211](https://github.com/ethereum/EIPs/pull/211) | New opcodes: RETURNDATASIZE and RETURNDATACOPY | Christian Reitwiessner | Core | Final |
| [214](https://github.com/ethereum/EIPs/pull/214) | New opcode STATICCALL | Vitalik Buterin, Christian Reitwiessner | Core | Final |
| [606](EIPS/eip-606.md) | Hardfork Meta: Homestead | Alex Beregszaszi | Meta | Final |
| [607](EIPS/eip-607.md) | Hardfork Meta: Spurious Dragon | Alex Beregszaszi | Meta | Final |
| [608](EIPS/eip-608.md) | Hardfork Meta: Tangerine Whistle | Alex Beregszaszi | Meta | Final |
| [609](EIPS/eip-609.md) | Hardfork Meta: Byzantium | Alex Beregszaszi | Meta | Final |