​

Name

Date

Mainnet Block #

Relevant changes / opcode specs

EIP details

1

Homestead

2016-03-14

1,150,000

Oldest version

​http://eips.ethereum.org/EIPS/eip-606​

2

Tangerine Whistle

2016-10-18

2,463,000

Gas cost to access other accounts increased, impacts gas estimation and optimization. All gas sent by default for external calls, previously a certain amount had to be retained.

​http://eips.ethereum.org/EIPS/eip-608​

3

Spurious Dragon

2016-11-18

2,675,000

Gas cost for the exp opcode increased, impacts gas estimation and optimization.

​http://eips.ethereum.org/EIPS/eip-607​

4

Byzantium

2017-12-17

4,370,000

Opcodes returndatacopy, returndatasize and staticcall available in assembly. staticcall opcode used when calling non-library view or pure functions, which prevents the functions from modifying state at the EVM level, this even applies to invalid type conversions. Ability to access dynamic data returned from function calls. revert opcode introduced, revert() will not waste gas.

​http://eips.ethereum.org/EIPS/eip-609​

5

Constantinople

2019-02-22

7,280,000

Opcodes create2, extcodehash, shl, shr and sar are available in assembly. Bitwise shifting operators use shifting opcodes (shl,shr,sar), requiring less gas.

​http://eips.ethereum.org/EIPS/eip-1013​

6

Petersburg

2019-02-22

7,280,000

No changes related to contract compiling (removes EIP 1283)

​http://eips.ethereum.org/EIPS/eip-1716​