For MEV Builders

All 48 Validators act together in front of BSC MEV builders.

Access Control

The Builder Relay is accessible at: https://builder-relay.48.club

• Validator nodes are located in Frankfurt, Germany and proxied by Cloudflare.

• Each partner brand may appoint two builders, each submitting up to three bids per block.

• For adding or adjusting builders, please contact the 48Club team via Telegram.

• Builders who meets expectations reward does not achieve the expectation will be banned from the 48Club Builder Relay following manual review.

MEV Support

MEV-related functions (adjustments) are as follows:

• mev_sendBid(arg1: types.BidArgsUpgrade): Returns (common.Hash, error)

type BidArgsUpgrade struct {
    RawBid          *RawBid
    Signature       hexutil.Bytes `json:"signature"`
    PayBidTx        hexutil.Bytes `json:"payBidTx"`
    PayBidTxGasUsed uint64        `json:"payBidTxGasUsed"`

    // 48Club Specific Fields
    NontaxableFee   *big.Int      `json:"nontaxableFee"` // BNB amount exempt from BEP95 taxation, transferred to the 48Club MEV collateral address
}

• mev_listCoinbase(): Returns ([]common.Address, error)

• mev_Params(): Returns (types.MevParams, error)

• mev_bestBidGasFee obsoleted in order to encourage blind bid

Bidding Preference

Preferences for bid evaluation are:

• Bid Evaluation: After BEP95 adjustments (10% burnt of the original block reward), bids are evaluated based on net rewards.

• Bid Calculation: Contribution is calculated as bidReward = sumTxGasFee * 0.9 + directTransferBNB.

• Direct Transfer BNB: Direct transfer BNB to the 48Club MEV collateral address: 0x1F732D6eA3BD247F0a400DBbeB479adA6D9Bda8C.

• Payment Preferences: Preference for direct transfers over gas fee burns for builder bribes. Payback transactions are marked but not processed in the final block.

• Puissant-Builder Priority: The Puissant-Builder receives a 20% weight increase due to its status as a 48Club brand product.

48Club reserves the right to modify the rules at any time and may request special adjustments in the future to better serve the 48Club RPC users.