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Evmos and Rewarding Developers from Transaction Fees

Presentation: https://docs.google.com/presentation/d/1BgfFb7iloUE2y-BdVcRexM-5HQ5y2CtWQT4h1DNJ3n4/edit?usp=sharing Analysis of how transaction fees can be used. https://www.youtube.com/watch?v=XMlNtI-5ZPQ

Fees Flow​

Code references: https://github.com/tharsis/evmos/issues/437#issuecomment-1083326097

sequenceDiagram
    autonumber
    participant EOA
    participant FeeCollector
    participant DistributionModule
    participant CommunityPool
    participant Developer
    participant Validators

    Note over EOA,FeeCollector: EthGasConsumeDecorator<br>AnteHandle
    EOA->>+FeeCollector: gasLimit * gasPrice<br>[bank]
    
    Note over EOA,FeeCollector: EthereumTx<br>after tx is executed
    FeeCollector->>+EOA: (gasLimit - gasUsed) * gasPrice<br>[bank]
    
    Note over FeeCollector, Developer: PostTxProcessing hook
    FeeCollector->>+Developer: (gasUsed * gasPrice) * devShares<br>[bank]

    Note over FeeCollector,DistributionModule: BeginBlocker hook<br>distr.AllocateTokens
    FeeCollector->>+DistributionModule: all balances<br>[bank]

    DistributionModule-->>+CommunityPool: communityTax [KVStore]
    DistributionModule-->>+Validators: block rewards [KVStore]

    Note over DistributionModule,Validators: withdraw rewards
    DistributionModule->>+Validators: rewards<br>[bank]

Address Derivation​

sequenceDiagram
    autonumber
    participant EOA1
    participant EOA2
    participant Factory1
    participant Factory2
    participant Contract1
    participant Contract2

    EOA1->>+Factory1: CREATE() <br> nonce=4

    rect rgb(90, 90, 90)
    Note over EOA2: signs & pays for tx
    EOA2-->Factory1: call
    Factory1->>+Factory2: CREATE() <br> nonce=0
    end

    rect rgb(90, 90, 90)
    Note over EOA2: signs & pays for tx
    EOA2-->Factory2: call
    Factory2->>+Contract1: CREATE() <br> nonce=0
    end
    
    rect rgb(90, 90, 90)
    Note over EOA2: signs & pays for tx
    EOA2-->Factory2: call
    Factory2->>+Contract2: CREATE() <br> nonce=1
    end