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Abstract
A fee is proposed on the partial beacon chain "sweep" withdrawal of validators using 0x01 credentials to improve stake consolidation and fairness. Ethereum's fast finality roadmap hinges on staking service providers migrating from 0x01 validators to 0x02 compounding validators. One roadblock is that 0x01 validators receive free-of-charge sweep withdrawals for balances exceeding 32 ETH, which consume protocol resources that are not accounted for. To address this, a 0.05% fee is imposed on the partial 0x01 sweep using a minimal modification to process_withdrawals(), applying the new constant WITHDRAWAL_FEE_FRACTION = 2000.