private boolean validateBlockCoinbaseMatchesMsgAuthor(final Proposal msg) {
    if (!msg.getBlock().getHeader().getCoinbase().equals(msg.getAuthor())) {
      LOG.info("{}: block coinbase does not match the proposer's address", ERROR_PREFIX);
      return false;
    }
    return true;
  }
Validate.

@param msg the Proposal msg
@return the boolean
consensus/qbft-core/src/main/java/org/hyperledger/besu/consensus/qbft/core/validation/ProposalValidator.java