Implementing native rollups with precompiled contracts - Layer 2 - Ethereum Research


    
    
  
    Ethereum Research
  


    
        
    
      Implementing native rollups with precompiled contracts
    


      
          
            
              
              
                Layer 2
              
            
            



        
            zk-roll-up
        

      

  

  

    
      

        

            

            
              
                nanfengpo
                
              

              


                


              
                  
                    July 20, 2022,  7:10am
                  
                  

1
              
            
            
              The definition of enshrined rollups suggests to ZK-SNARK everything, including the execution layer. Here we propose an alternative design that launches a specific number (like 64) of rollups on the execution layer by using precompiled contracts. We call it native rollups, which will bear part of the advantages of enshrined rollups.


Precompiled Contracts & Rollup Slots

There are 64 pre-deployed contracts as “rollup slots,” which will be called directly by batch & proof transactions from rollups. These slots will call a precompiled contract for proof verification and update local state roots if successful. The precompiled contract can accelerate the verification of zero-knowledge proofs with optimizations in binary codes.



流程图1167×649 54.5 KB




Settlement Priority & Batch Reward

Batch & proof transactions successfully updating the state roots in rollup slots will be rewarded (to the block producer) with coins so that they will have a higher priority in the mempool and settle immediately. If not successful, they will be charged with gas, which is relatively low due to using the precompiled contract.

            


            
              
5 Likes
            

            
                

                      
                        Native Rollup: a new paradigm of zk-Rollup
                        


            
              
                shakeib98
                
              

              



              
                  
                    November 13, 2022,  5:41pm
                  
                  

2
              
            
            
              Is this a kind of setllement rollup? And does your design also supports arbitrary code execution through any SC language?

            


            
              

            

            
                
	
        
          Home 
        
      
	
        
          Categories 
        
      
	
        
          FAQ/Guidelines 
        
      
	
          
            Terms of Service 
          
        
	
          
            Privacy Policy 
          
        


  
  Powered by Discourse, best viewed with JavaScript enabled