Function CreateBlockChain

src/test/util/mining.cpp:43–76

}

std::vector<std::shared_ptr<CBlock>> CreateBlockChain(size_t total_height, const CChainParams& params)
{
    std::vector<std::shared_ptr<CBlock>> ret{total_height};
    auto time{params.GenesisBlock().nTime};
    // NOTE: here `height` does not correspond to the block height but the block height - 1.
    for (size_t height{0}; height < total_height; ++height) {
        CBlock& block{*(ret.at(height) = std::make_shared<CBlock>())};

        CMutableTransaction coinbase_tx;
        coinbase_tx.nLockTime = static_cast<uint32_t>(height);
        coinbase_tx.vin.resize(1);
        coinbase_tx.vin[0].prevout.SetNull();
        coinbase_tx.vin[0].nSequence = CTxIn::MAX_SEQUENCE_NONFINAL; // Make sure timelock is enforced.
        coinbase_tx.vout.resize(1);
        coinbase_tx.vout[0].scriptPubKey = P2WSH_OP_TRUE;
        coinbase_tx.vout[0].nValue = GetBlockSubsidy(height + 1, params.GetConsensus());
        // Always include OP_0 as a dummy extraNonce.
        coinbase_tx.vin[0].scriptSig = CScript() << (height + 1) << OP_0;
        block.vtx = {MakeTransactionRef(std::move(coinbase_tx))};

        block.nVersion = VERSIONBITS_LAST_OLD_BLOCK_VERSION;
        block.hashPrevBlock = (height >= 1 ? *ret.at(height - 1) : params.GenesisBlock()).GetHash();
        block.hashMerkleRoot = BlockMerkleRoot(block);
        block.nTime = ++time;
        block.nBits = params.GenesisBlock().nBits;
        block.nNonce = 0;

        while (!CheckProofOfWork(block.GetHash(), block.nBits, params.GetConsensus())) {
            ++block.nNonce;
            assert(block.nNonce);
        }
    }
    return ret;
}

COutPoint MineBlock(const NodeContext& node, const node::BlockCreateOptions& assembler_options)
{