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Marius van der Wijden authoredImplements EIP-3651, "Warm Coinbase", for Shanghai hardfork. Specification: https://eips.ethereum.org/EIPS/eip-3651. 
Implements EIP-3651, "Warm Coinbase", for Shanghai hardfork. Specification: https://eips.ethereum.org/EIPS/eip-3651.