UniValue arr(UniValue::VARR);
    for (int i = 0; i < request.params[0].get_int(); i++) {
        std::unique_ptr<CBlockTemplate> pblocktemplate(BlockAssembler(Params()).CreateNewBlock(coinbaseDest));
        if (!pblocktemplate.get())
            throw JSONRPCError(RPC_INTERNAL_ERROR, "Wallet keypool empty");
        unsigned int nExtraNonce = 0;
        IncrementExtraNonce(&pblocktemplate->block, chainActive.Tip(), nExtraNonce);
        if (!CheckProof(pblocktemplate->block, Params().GetConsensus()))
            throw JSONRPCError(RPC_METHOD_NOT_FOUND, "This method cannot be used with a block-signature-required chain");
        std::shared_ptr<const CBlock> shared_pblock = std::make_shared<const CBlock>(pblocktemplate->block);
        bool ret;
        ret = ProcessNewBlock(Params(), shared_pblock, true, NULL);
        assert(ret);
        assert(chainActive.Tip()->GetBlockHash() == pblocktemplate->block.GetHash());
        arr.push_back(pblocktemplate->block.GetHash().ToString());
    }