EIP-1679: Hardfork Meta: Istanbul


  Ethereum Improvement Proposals
        
        
          
            
              
            
          
        

        AllCoreNetworkingInterfaceERCMetaInformational

      



      
        
  
    

  
    
    
    
    
    
      Meta
    
  
  
    
      EIP-1679: Hardfork Meta: Istanbul
    
    
      
        
      
    
    
      
        
      
    
  

  

  	Authors	Alex Beregszaszi (@axic), Afri Schoedon (@5chdn)
	Created	2019-01-04
	Requires	

  EIP-152, 

  EIP-1108, 

  EIP-1344, 

  EIP-1716, 

  EIP-1884, 

  EIP-2028, 

  EIP-2200




  


  

  
    Table of Contents

    	Abstract
	Specification
    	Activation
	Included EIPs


  
	References
	Copyright



  


  
      
      
         Abstract
      
      
    


This meta-EIP specifies the changes included in the Ethereum hardfork named Istanbul.

  
    
      
      
         Specification
      
      
    


	Codename: Istanbul


  
    
      
      
         Activation
      
      
    

	Block >= 9,069,000 on the Ethereum Mainnet
	Block >= 6,485,846 on the Ropsten testnet
	Block >= 14,111,141 on the Kovan testnet
	Block >= 5,435,345 on the Rinkeby testnet
	Block >= 1,561,651 on the Görli testnet


  
    
      
      
         Included EIPs
      
      
    

	EIP-152: Add Blake2 compression function F precompile
	EIP-1108: Reduce alt_bn128 precompile gas costs
	EIP-1344: Add ChainID opcode
	EIP-1884: Repricing for trie-size-dependent opcodes
	EIP-2028: Calldata gas cost reduction
	EIP-2200: Rebalance net-metered SSTORE gas cost with consideration of SLOAD gas cost change


  
    
      
      
         References
      
      
    


	Included EIPs were finalized in All Core Devs Call #68
	https://medium.com/ethereum-cat-herders/istanbul-testnets-are-coming-53973bcea7df


  
    
      
      
         Copyright
      
      
    


Copyright and related rights waived via CC0.


  Citation

  Please cite this document as:

  
  Alex Beregszaszi (@axic), Afri Schoedon (@5chdn), "EIP-1679: Hardfork Meta: Istanbul," Ethereum Improvement Proposals, no. 1679, January 2019. [Online serial]. Available: https://eips.ethereum.org/EIPS/eip-1679.






      
    
  

  

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