EIPs/README.md

# EIPs [![Gitter](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/ethereum/EIPs?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge)
Ethereum Improvement Proposals (EIPs) describe standards for the Ethereum platform, including core protocol specifications, client APIs, and contract standards.

# Contributing
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).

# 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.


# Accepted EIPs (planned for adoption)
| Number                                                  |Title                                                                                | Author                | Type      | Layer       | Status    | 
| ------------------------------------------------------- | ----------------------------------------------------------------------------------- | --------------------  | ----------| ------------| ----------|
| [86](https://github.com/ethereum/EIPs/pull/208)         | Abstraction of transaction origin and signature                                     | Vitalik Buterin       | Standard  | Core        | Accepted  |
| [96](https://github.com/ethereum/EIPs/pull/210)         | Blockhash refactoring                                                               | Vitalik Buterin       | Standard  | Core        | Accepted  |
| [98](https://github.com/ethereum/EIPs/pull/98)          | Removal of intermediate state roots from receipts                                   | Vitalik Buterin       | Standard  | Core        | Accepted  |
| [100](https://github.com/ethereum/EIPs/issues/100)      | Change difficulty adjustment to target mean block time including uncles	            | Vitalik Buterin       | Standard  | Core        | Accepted  |
| [140](https://github.com/ethereum/EIPs/pull/206)        | REVERT instruction in the Ethereum Virtual Machine                                  | Beregszaszi, Mushegian| Standard  | Core        | Accepted  |
| [196](https://github.com/ethereum/EIPs/pull/213)        | Precompiled contracts for addition and scalar multiplication on the elliptic curve alt_bn128 | Reitwiessner | Standard  | Core        | Accepted  |
| [197](https://github.com/ethereum/EIPs/pull/212)        | Precompiled contracts for optimal Ate pairing check on the elliptic curve alt_bn128 | Buterin, Reitwiessner | Standard  | Core        | Accepted  |
| [198](https://github.com/ethereum/EIPs/pull/198)        | Precompiled contract for bigint modular exponentiation				                      | Vitalik Buterin       | Standard  | Core        | Accepted  |
| [211](https://github.com/ethereum/EIPs/pull/211)        | New opcodes: RETURNDATASIZE and RETURNDATACOPY                                      | Christian Reitwiessner| Standard  | Core        | Draft     |
| [214](https://github.com/ethereum/EIPs/pull/214)        | New opcode STATICCALL                                                               | Buterin, Reitwiessner | Standard  | Core        | Draft     |


# Finalized EIPs (standards that have been adopted)
| Number                                                  |Title                                                        | Author          | Type      | Layer       | Status  | 
| ------------------------------------------------------- | ----------------------------------------------------------- | ----------------| ----------| ------------| --------|
| [2](EIPS/eip-2.mediawiki)                               | Homestead Hard-fork Changes                                 | Vitalik Buterin | Standard  | Core        | Final   |
| [6](EIPS/eip-6.md)                                      | Renaming Suicide Opcode                                     | Hudson Jameson  | Standard  | Interface   | Final   |
| [7](EIPS/eip-7.md)                                      | DELEGATECALL                                                | Vitalik Buterin | Standard  | Core        | Final   |
| [8](EIPS/eip-8.md)                                      | devp2p Forward Compatibility Requirements for Homestead     | Felix Lange     | Standard  | Networking  | Final   |
[ [141](EIPS/eip-141.md)                                  | Designated invalid EVM instruction                          | Alex Beregsazszi| Standard  | Core        | Final   |
| [150](https://github.com/ethereum/EIPs/issues/150)      | Gas cost changes for IO-heavy operations                    | Vitalik Buterin | Standard  | Core        | Final   |
| [155](https://github.com/ethereum/EIPs/issues/155)      | Simple replay attack protection                             | Vitalik Buterin | Standard  | Core        | Final   |
| [160](https://github.com/ethereum/EIPs/issues/160)      | EXP cost increase                                           | Vitalik Buterin | Standard  | Core        | Final   |
| [161](https://github.com/ethereum/EIPs/issues/161)      | State trie clearing (invariant-preserving alternative)      | Gavin Wood      | Standard  | Core        | Final   |
| [170](https://github.com/ethereum/EIPs/issues/170)      | Contract code size limit                                    | Vitalik Buterin | Standard  | Core        | Final   |

# EIPs under consideration
| Number                                                  |Title                                                                                | Author                | Type      | Layer       | Status    | 
| ------------------------------------------------------  | ----------------------------------------------------------------------------------- | --------------------  | ----------| ------------| ----------|
redo table of EIPs in README 2017-03-03 17:14:28 +00:00			`# EIPs [![Gitter](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/ethereum/EIPs?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge)`
			`Ethereum Improvement Proposals (EIPs) describe standards for the Ethereum platform, including core protocol specifications, client APIs, and contract standards.`
Update README.md 2015-10-27 05:57:12 +00:00
Fixing few typos 2015-11-17 14:07:56 +00:00			`# Contributing`
Update README.md 2017-02-02 01:15:11 +00:00			`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).`
Update README.md 2015-10-27 04:39:53 +00:00
redo table of EIPs in README 2017-03-03 17:14:28 +00:00			`# 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.`


			`# Accepted EIPs (planned for adoption)`
STATICCALL and PURE_CALL are under consideration 2017-03-17 15:40:01 +00:00			`\| Number \|Title \| Author \| Type \| Layer \| Status \|`
			`\| ------------------------------------------------------- \| ----------------------------------------------------------------------------------- \| -------------------- \| ----------\| ------------\| ----------\|`
Fix up URLs for the EIPs. Some of the URLs for the EIP numbers pointed to non-existent pages (by using absolute rather than relative paths). 2017-03-03 20:38:33 +00:00			`\| [86](https://github.com/ethereum/EIPs/pull/208) \| Abstraction of transaction origin and signature \| Vitalik Buterin \| Standard \| Core \| Accepted \|`
			`\| [96](https://github.com/ethereum/EIPs/pull/210) \| Blockhash refactoring \| Vitalik Buterin \| Standard \| Core \| Accepted \|`
STATICCALL and PURE_CALL are under consideration 2017-03-17 15:40:01 +00:00			`\| [98](https://github.com/ethereum/EIPs/pull/98) \| Removal of intermediate state roots from receipts \| Vitalik Buterin \| Standard \| Core \| Accepted \|`
add EIP-198 (bigint modexp) to accepted table 2017-03-04 02:22:44 +00:00			`\| [100](https://github.com/ethereum/EIPs/issues/100) \| Change difficulty adjustment to target mean block time including uncles \| Vitalik Buterin \| Standard \| Core \| Accepted \|`
Fix up URLs for the EIPs. Some of the URLs for the EIP numbers pointed to non-existent pages (by using absolute rather than relative paths). 2017-03-03 20:38:33 +00:00			`\| [140](https://github.com/ethereum/EIPs/pull/206) \| REVERT instruction in the Ethereum Virtual Machine \| Beregszaszi, Mushegian\| Standard \| Core \| Accepted \|`
			`\| [196](https://github.com/ethereum/EIPs/pull/213) \| Precompiled contracts for addition and scalar multiplication on the elliptic curve alt_bn128 \| Reitwiessner \| Standard \| Core \| Accepted \|`
			`\| [197](https://github.com/ethereum/EIPs/pull/212) \| Precompiled contracts for optimal Ate pairing check on the elliptic curve alt_bn128 \| Buterin, Reitwiessner \| Standard \| Core \| Accepted \|`
add EIP-198 (bigint modexp) to accepted table 2017-03-04 02:22:44 +00:00			`\| [198](https://github.com/ethereum/EIPs/pull/198) \| Precompiled contract for bigint modular exponentiation \| Vitalik Buterin \| Standard \| Core \| Accepted \|`
Edited Accepted EIPs See https://github.com/ethereum/pm/blob/master/All%20Core%20Devs%20Meetings/Meeting%2013.md#1-resolution-for-staticcall-purecall-revert-opcode--dynamic-return-discussion-core-devs 2017-04-12 08:12:17 +00:00			`\| [211](https://github.com/ethereum/EIPs/pull/211) \| New opcodes: RETURNDATASIZE and RETURNDATACOPY \| Christian Reitwiessner\| Standard \| Core \| Draft \|`
			`\| [214](https://github.com/ethereum/EIPs/pull/214) \| New opcode STATICCALL \| Buterin, Reitwiessner \| Standard \| Core \| Draft \|`
redo table of EIPs in README 2017-03-03 17:14:28 +00:00

			`# Finalized EIPs (standards that have been adopted)`
STATICCALL and PURE_CALL are under consideration 2017-03-17 15:40:01 +00:00			`\| Number \|Title \| Author \| Type \| Layer \| Status \|`
			`\| ------------------------------------------------------- \| ----------------------------------------------------------- \| ----------------\| ----------\| ------------\| --------\|`
			`\| [2](EIPS/eip-2.mediawiki) \| Homestead Hard-fork Changes \| Vitalik Buterin \| Standard \| Core \| Final \|`
			`\| [6](EIPS/eip-6.md) \| Renaming Suicide Opcode \| Hudson Jameson \| Standard \| Interface \| Final \|`
			`\| [7](EIPS/eip-7.md) \| DELEGATECALL \| Vitalik Buterin \| Standard \| Core \| Final \|`
			`\| [8](EIPS/eip-8.md) \| devp2p Forward Compatibility Requirements for Homestead \| Felix Lange \| Standard \| Networking \| Final \|`
Add EIP141 to readme 2017-02-09 18:17:43 +00:00			`[ [141](EIPS/eip-141.md) \| Designated invalid EVM instruction \| Alex Beregsazszi\| Standard \| Core \| Final \|`
Fix up URLs for the EIPs. Some of the URLs for the EIP numbers pointed to non-existent pages (by using absolute rather than relative paths). 2017-03-03 20:38:33 +00:00			`\| [150](https://github.com/ethereum/EIPs/issues/150) \| Gas cost changes for IO-heavy operations \| Vitalik Buterin \| Standard \| Core \| Final \|`
			`\| [155](https://github.com/ethereum/EIPs/issues/155) \| Simple replay attack protection \| Vitalik Buterin \| Standard \| Core \| Final \|`
			`\| [160](https://github.com/ethereum/EIPs/issues/160) \| EXP cost increase \| Vitalik Buterin \| Standard \| Core \| Final \|`
			`\| [161](https://github.com/ethereum/EIPs/issues/161) \| State trie clearing (invariant-preserving alternative) \| Gavin Wood \| Standard \| Core \| Final \|`
			`\| [170](https://github.com/ethereum/EIPs/issues/170) \| Contract code size limit \| Vitalik Buterin \| Standard \| Core \| Final \|`
Edited Accepted EIPs See https://github.com/ethereum/pm/blob/master/All%20Core%20Devs%20Meetings/Meeting%2013.md#1-resolution-for-staticcall-purecall-revert-opcode--dynamic-return-discussion-core-devs 2017-04-12 08:12:17 +00:00
			`# EIPs under consideration`
			`\| Number \|Title \| Author \| Type \| Layer \| Status \|`
			`\| ------------------------------------------------------ \| ----------------------------------------------------------------------------------- \| -------------------- \| ----------\| ------------\| ----------\|`