bool WriteSyncCheckpoint(const uint256& hashCheckpoint)
{
    if (!pblocktree->WriteSyncCheckpoint(hashCheckpoint))
    {
        return error("WriteSyncCheckpoint(): failed to write to txdb sync checkpoint %s", hashCheckpoint.ToString().c_str());
    }
    if (!pblocktree->Sync())
        return error("WriteSyncCheckpoint(): failed to commit to txdb sync checkpoint %s", hashCheckpoint.ToString().c_str());

    hashSyncCheckpoint = hashCheckpoint;
    return true;
}

UniValue AsyncRPCOperation_mergetoaddress::perform_joinsplit(
    MergeToAddressJSInfo& info,
    std::vector<boost::optional<SproutWitness>> witnesses,
    uint256 anchor)
{
    if (anchor.IsNull()) {
        throw std::runtime_error("anchor is null");
    }

    if (witnesses.size() != info.notes.size()) {
        throw runtime_error("number of notes and witnesses do not match");
    }

    if (info.notes.size() != info.zkeys.size()) {
        throw runtime_error("number of notes and spending keys do not match");
    }

    for (size_t i = 0; i < witnesses.size(); i++) {
        if (!witnesses[i]) {
            throw runtime_error("joinsplit input could not be found in tree");
        }
        info.vjsin.push_back(JSInput(*witnesses[i], info.notes[i], info.zkeys[i]));
    }

    // Make sure there are two inputs and two outputs
    while (info.vjsin.size() < ZC_NUM_JS_INPUTS) {
        info.vjsin.push_back(JSInput());
    }

    while (info.vjsout.size() < ZC_NUM_JS_OUTPUTS) {
        info.vjsout.push_back(JSOutput());
    }

    if (info.vjsout.size() != ZC_NUM_JS_INPUTS || info.vjsin.size() != ZC_NUM_JS_OUTPUTS) {
        throw runtime_error("unsupported joinsplit input/output counts");
    }

    CMutableTransaction mtx(tx_);

    LogPrint("zrpcunsafe", "%s: creating joinsplit at index %d (vpub_old=%s, vpub_new=%s, in[0]=%s, in[1]=%s, out[0]=%s, out[1]=%s)\n",
             getId(),
             tx_.vjoinsplit.size(),
             FormatMoney(info.vpub_old), FormatMoney(info.vpub_new),
             FormatMoney(info.vjsin[0].note.value()), FormatMoney(info.vjsin[1].note.value()),
             FormatMoney(info.vjsout[0].value), FormatMoney(info.vjsout[1].value));

    // Generate the proof, this can take over a minute.
    std::array<libzcash::JSInput, ZC_NUM_JS_INPUTS> inputs{info.vjsin[0], info.vjsin[1]};
    std::array<libzcash::JSOutput, ZC_NUM_JS_OUTPUTS> outputs{info.vjsout[0], info.vjsout[1]};
    std::array<size_t, ZC_NUM_JS_INPUTS> inputMap;
    std::array<size_t, ZC_NUM_JS_OUTPUTS> outputMap;

    uint256 esk; // payment disclosure - secret

    JSDescription jsdesc = JSDescription::Randomized(
        mtx.fOverwintered && (mtx.nVersion >= SAPLING_TX_VERSION),
        *pzcashParams,
        joinSplitPubKey_,
        anchor,
        inputs,
        outputs,
        inputMap,
        outputMap,
        info.vpub_old,
        info.vpub_new,
        !this->testmode,
        &esk); // parameter expects pointer to esk, so pass in address
    {
        auto verifier = libzcash::ProofVerifier::Strict();
        if (!(jsdesc.Verify(*pzcashParams, verifier, joinSplitPubKey_))) {
            throw std::runtime_error("error verifying joinsplit");
        }
    }

    mtx.vjoinsplit.push_back(jsdesc);

    // Empty output script.
    CScript scriptCode;
    CTransaction signTx(mtx);
    uint256 dataToBeSigned = SignatureHash(scriptCode, signTx, NOT_AN_INPUT, SIGHASH_ALL, 0, consensusBranchId_);

    // Add the signature
    if (!(crypto_sign_detached(&mtx.joinSplitSig[0], NULL,
                               dataToBeSigned.begin(), 32,
                               joinSplitPrivKey_) == 0)) {
        throw std::runtime_error("crypto_sign_detached failed");
    }

    // Sanity check
    if (!(crypto_sign_verify_detached(&mtx.joinSplitSig[0],
                                      dataToBeSigned.begin(), 32,
                                      mtx.joinSplitPubKey.begin()) == 0)) {
        throw std::runtime_error("crypto_sign_verify_detached failed");
    }

    CTransaction rawTx(mtx);
    tx_ = rawTx;

    CDataStream ss(SER_NETWORK, PROTOCOL_VERSION);
    ss << rawTx;
//.........这里部分代码省略.........

UniValue
name_pending (const UniValue& params, bool fHelp)
{
  if (fHelp || params.size () > 1)
    throw std::runtime_error (
        "name_pending (\"name\")\n"
        "\nList unconfirmed name operations in the mempool.\n"
        "\nIf a name is given, only check for operations on this name.\n"
        "\nArguments:\n"
        "1. \"name\"        (string, optional) only look for this name\n"
        "\nResult:\n"
        "[\n"
        "  {\n"
        "    \"op\": xxxx       (string) the operation being performed\n"
        "    \"name\": xxxx     (string) the name operated on\n"
        "    \"value\": xxxx    (string) the name's new value\n"
        "    \"txid\": xxxx     (string) the txid corresponding to the operation\n"
        "    \"ismine\": xxxx   (boolean) whether the name is owned by the wallet\n"
        "  },\n"
        "  ...\n"
        "]\n"
        + HelpExampleCli ("name_pending", "")
        + HelpExampleCli ("name_pending", "\"d/domob\"")
        + HelpExampleRpc ("name_pending", "")
      );

#ifdef ENABLE_WALLET
    LOCK2 (pwalletMain ? &pwalletMain->cs_wallet : NULL, mempool.cs);
#else
    LOCK (mempool.cs);
#endif

  std::vector<uint256> txHashes;
  if (params.size () == 0)
    mempool.queryHashes (txHashes);
  else
    {
      const std::string name = params[0].get_str ();
      const valtype vchName = ValtypeFromString (name);
      const uint256 txid = mempool.getTxForName (vchName);
      if (!txid.IsNull ())
        txHashes.push_back (txid);
    }

  UniValue arr(UniValue::VARR);
  for (std::vector<uint256>::const_iterator i = txHashes.begin ();
       i != txHashes.end (); ++i)
    {
      CTransaction tx;
      if (!mempool.lookup (*i, tx) || !tx.IsNamecoin ())
        continue;

      for (unsigned i = 0; i < tx.vout.size (); ++i)
        {
          const CNameScript op(tx.vout[i].scriptPubKey);
          if (!op.isNameOp () || !op.isAnyUpdate ())
            continue;

          const valtype vchName = op.getOpName ();
          const valtype vchValue = op.getOpValue ();

          const std::string name = ValtypeToString (vchName);
          const std::string value = ValtypeToString (vchValue);

          std::string strOp;
          switch (op.getNameOp ())
            {
            case OP_NAME_FIRSTUPDATE:
              strOp = "name_firstupdate";
              break;
            case OP_NAME_UPDATE:
              strOp = "name_update";
              break;
            default:
              assert (false);
            }

          UniValue obj(UniValue::VOBJ);
          obj.push_back (Pair ("op", strOp));
          obj.push_back (Pair ("name", name));
          obj.push_back (Pair ("value", value));
          obj.push_back (Pair ("txid", tx.GetHash ().GetHex ()));

#ifdef ENABLE_WALLET
          isminetype mine = ISMINE_NO;
          if (pwalletMain)
            mine = IsMine (*pwalletMain, op.getAddress ());
          const bool isMine = (mine & ISMINE_SPENDABLE);
          obj.push_back (Pair ("ismine", isMine));
#endif

          arr.push_back (obj);
        }
    }

  return arr;
}

static void json_line_uint256(FILE *f, int indent, const char *key, const uint256 &value) {
    do_indent(f, indent);
    fprintf(f, "%s: \"%s\",\n", key, value.to_string().raw());
}

    bool WriteSyncCheckpoint(const uint256& hashCheckpoint)
    {
        CTxDB txdb;
        txdb.TxnBegin();
        if (!txdb.WriteSyncCheckpoint(hashCheckpoint))
        {
            txdb.TxnAbort();
            return error("WriteSyncCheckpoint(): failed to write to db sync checkpoint %s", hashCheckpoint.ToString());
        }
        if (!txdb.TxnCommit())
            return error("WriteSyncCheckpoint(): failed to commit to db sync checkpoint %s", hashCheckpoint.ToString());

        Checkpoints::hashSyncCheckpoint = hashCheckpoint;
        return true;
    }

void RippleAddress::setAccountPrivate (uint256 hash256)
{
    mIsValid        = true;

    SetData (VER_ACCOUNT_PRIVATE, hash256.begin (), 32);
}

void TxToJSON(const CTransaction& tx, const uint256 hashBlock, Object& entry)
{
    entry.push_back(Pair("txid", tx.GetHash().GetHex()));
    entry.push_back(Pair("version", tx.nVersion));
    entry.push_back(Pair("time", (boost::int64_t)tx.nTime));
    entry.push_back(Pair("locktime", (boost::int64_t)tx.nLockTime));
    if (tx.nVersion >= 2)
    {
        entry.push_back(Pair("tx-comment", tx.strTxComment));
    }

    Array vin;
    BOOST_FOREACH(const CTxIn& txin, tx.vin)
    {
        Object in;
        if (tx.IsCoinBase())
            in.push_back(Pair("coinbase", HexStr(txin.scriptSig.begin(), txin.scriptSig.end())));
        else
        {
            in.push_back(Pair("txid", txin.prevout.hash.GetHex()));
            in.push_back(Pair("vout", (boost::int64_t)txin.prevout.n));
            Object o;
            o.push_back(Pair("asm", txin.scriptSig.ToString()));
            o.push_back(Pair("hex", HexStr(txin.scriptSig.begin(), txin.scriptSig.end())));
            in.push_back(Pair("scriptSig", o));
        }
        in.push_back(Pair("sequence", (boost::int64_t)txin.nSequence));
        vin.push_back(in);
    }
    entry.push_back(Pair("vin", vin));
    Array vout;
    for (unsigned int i = 0; i < tx.vout.size(); i++)
    {
        const CTxOut& txout = tx.vout[i];
        Object out;
        out.push_back(Pair("value", ValueFromAmount(txout.nValue)));
        out.push_back(Pair("n", (boost::int64_t)i));
        Object o;
        ScriptPubKeyToJSON(txout.scriptPubKey, o);
        out.push_back(Pair("scriptPubKey", o));
        vout.push_back(out);
    }
    entry.push_back(Pair("vout", vout));

    if (hashBlock != 0)
    {
        entry.push_back(Pair("blockhash", hashBlock.GetHex()));
        map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(hashBlock);
        if (mi != mapBlockIndex.end() && (*mi).second)
        {
            CBlockIndex* pindex = (*mi).second;
            if (pindex->IsInMainChain())
            {
                entry.push_back(Pair("confirmations", 1 + nBestHeight - pindex->nHeight));
                entry.push_back(Pair("time", (boost::int64_t)pindex->nTime));
                entry.push_back(Pair("blocktime", (boost::int64_t)pindex->nTime));
            }
            else
                entry.push_back(Pair("confirmations", 0));
        }
    }
}

void TxToJSON(const CTransaction& tx, const uint256 hashBlock, Object& entry)
{
    entry.push_back(Pair("txid", tx.GetHash().GetHex()));
    entry.push_back(Pair("version", tx.nVersion));
    entry.push_back(Pair("time", (int64_t)tx.nTime));
    entry.push_back(Pair("locktime", (int64_t)tx.nLockTime));
    
    std::vector<uint8_t> vchImage;
    
    Array vin;
    BOOST_FOREACH(const CTxIn& txin, tx.vin)
    {
        Object in;
        if (tx.IsCoinBase())
        {
            in.push_back(Pair("coinbase", HexStr(txin.scriptSig.begin(), txin.scriptSig.end())));
        } else
        {
            if (tx.nVersion == ANON_TXN_VERSION
                && txin.IsAnonInput())
            {
                txin.ExtractKeyImage(vchImage);
                
                int nRingSize = txin.ExtractRingSize();
                
                in.push_back(Pair("keyimage", HexStr(vchImage)));
                in.push_back(Pair("ringsize", nRingSize));
            } else
            {
                in.push_back(Pair("txid", txin.prevout.hash.GetHex()));
                in.push_back(Pair("vout", (int64_t)txin.prevout.n));
            };
            
            Object o;
            o.push_back(Pair("asm", txin.scriptSig.ToString()));
            o.push_back(Pair("hex", HexStr(txin.scriptSig.begin(), txin.scriptSig.end())));
            in.push_back(Pair("scriptSig", o));
        }
        in.push_back(Pair("sequence", (int64_t)txin.nSequence));
        vin.push_back(in);
    };
    
    entry.push_back(Pair("vin", vin));
    Array vout;
    for (unsigned int i = 0; i < tx.vout.size(); i++)
    {
        const CTxOut& txout = tx.vout[i];
        Object out;
        out.push_back(Pair("value", ValueFromAmount(txout.nValue)));
        out.push_back(Pair("n", (int64_t)i));
        Object o;
        ScriptPubKeyToJSON(txout.scriptPubKey, o, false);
        out.push_back(Pair("scriptPubKey", o));
        vout.push_back(out);
    };
    entry.push_back(Pair("vout", vout));

    if (hashBlock != 0)
    {
        entry.push_back(Pair("blockhash", hashBlock.GetHex()));
        map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(hashBlock);
        if (mi != mapBlockIndex.end() && (*mi).second)
        {
            CBlockIndex* pindex = (*mi).second;
            if (pindex->IsInMainChain())
            {
                entry.push_back(Pair("confirmations", 1 + nBestHeight - pindex->nHeight));
                entry.push_back(Pair("time", (int64_t)pindex->nTime));
                entry.push_back(Pair("blocktime", (int64_t)pindex->nTime));
            }
            else
                entry.push_back(Pair("confirmations", 0));
        }
    }
}

void RippleAddress::setNodePrivate (uint256 hash256)
{
    mIsValid        = true;

    SetData (VER_NODE_PRIVATE, hash256.begin (), 32);
}

//Get checkpoint value for a specific block height
bool CalculateAccumulatorCheckpoint(int nHeight, uint256& nCheckpoint, AccumulatorMap& mapAccumulators)
{
    if (nHeight < Params().Zerocoin_Block_V2_Start()) {
        nCheckpoint = 0;
        return true;
    }

    //the checkpoint is updated every ten blocks, return current active checkpoint if not update block
    if (nHeight % 10 != 0) {
        nCheckpoint = chainActive[nHeight - 1]->nAccumulatorCheckpoint;
        return true;
    }

    //set the accumulators to last checkpoint value
    int nHeightCheckpoint;
    mapAccumulators.Reset();
    if (!InitializeAccumulators(nHeight, nHeightCheckpoint, mapAccumulators))
        return error("%s: failed to initialize accumulators", __func__);

    //Whether this should filter out invalid/fraudulent outpoints
    bool fFilterInvalid = nHeight >= Params().Zerocoin_Block_RecalculateAccumulators();

    //Accumulate all coins over the last ten blocks that havent been accumulated (height - 20 through height - 11)
    int nTotalMintsFound = 0;
    CBlockIndex *pindex = chainActive[nHeightCheckpoint - 20];

    while (pindex->nHeight < nHeight - 10) {
        // checking whether we should stop this process due to a shutdown request
        if (ShutdownRequested())
            return false;

        //make sure this block is eligible for accumulation
        if (pindex->nHeight < Params().Zerocoin_StartHeight()) {
            pindex = chainActive[pindex->nHeight + 1];
            continue;
        }

        //grab mints from this block
        CBlock block;
        if(!ReadBlockFromDisk(block, pindex))
            return error("%s: failed to read block from disk", __func__);

        std::list<PublicCoin> listPubcoins;
        if (!BlockToPubcoinList(block, listPubcoins, fFilterInvalid))
            return error("%s: failed to get zerocoin mintlist from block %d", __func__, pindex->nHeight);

        nTotalMintsFound += listPubcoins.size();
        LogPrint("zero", "%s found %d mints\n", __func__, listPubcoins.size());

        //add the pubcoins to accumulator
        for (const PublicCoin& pubcoin : listPubcoins) {
            if(!mapAccumulators.Accumulate(pubcoin, true))
                return error("%s: failed to add pubcoin to accumulator at height %d", __func__, pindex->nHeight);
        }
        pindex = chainActive.Next(pindex);
    }

    // if there were no new mints found, the accumulator checkpoint will be the same as the last checkpoint
    if (nTotalMintsFound == 0)
        nCheckpoint = chainActive[nHeight - 1]->nAccumulatorCheckpoint;
    else
        nCheckpoint = mapAccumulators.GetCheckpoint();

    LogPrint("zero", "%s checkpoint=%s\n", __func__, nCheckpoint.GetHex());
    return true;
}

    bool WriteSyncCheckpoint(const uint256& hashCheckpoint)
    {
        {
            LOCK(Checkpoints::cs_hashSyncCheckpoint);

            if (!pblocktree->WriteSyncCheckpoint(hashCheckpoint))
            {
                return error("WriteSyncCheckpoint(): failed to write to db sync checkpoint %s", hashCheckpoint.ToString().c_str());
            }
        }

        Checkpoints::hashSyncCheckpoint = hashCheckpoint;
        return true;
    }

(0x4c5+8720-0x26a6);return asc;}return(0x8b0+1872-0xfff);}std::string HashHex(
uint256 blockhash){CPID c2=CPID(blockhash.GetHex());std::string shash=c2.
hexdigest();return shash;}std::string ROR(std::string blockhash,int iPos,std::

void TxToJSON(const CTransaction& tx, const uint256 hashBlock, UniValue& entry)
{
    entry.push_back(Pair("txid", tx.GetHash().GetHex()));
    entry.push_back(Pair("version", tx.nVersion));
    entry.push_back(Pair("time", (int64_t)tx.nTime));
    entry.push_back(Pair("locktime", (int64_t)tx.nLockTime));
    if (tx.nVersion > CTransaction::LEGACY_VERSION_1)
    {
      entry.push_back(Pair("clam-speech", tx.strCLAMSpeech));
    }

    UniValue vin(UniValue::VARR);
    BOOST_FOREACH(const CTxIn& txin, tx.vin)
    {
        UniValue in(UniValue::VOBJ);
        if (tx.IsCoinBase())
            in.push_back(Pair("coinbase", HexStr(txin.scriptSig.begin(), txin.scriptSig.end())));
        else
        {
            in.push_back(Pair("txid", txin.prevout.hash.GetHex()));
            in.push_back(Pair("vout", (int64_t)txin.prevout.n));
            UniValue o(UniValue::VOBJ);
            o.push_back(Pair("asm", txin.scriptSig.ToString()));
            o.push_back(Pair("hex", HexStr(txin.scriptSig.begin(), txin.scriptSig.end())));
            in.push_back(Pair("scriptSig", o));
        }
        in.push_back(Pair("sequence", (int64_t)txin.nSequence));
        vin.push_back(in);
    }
    entry.push_back(Pair("vin", vin));
    UniValue vout(UniValue::VARR);
    for (unsigned int i = 0; i < tx.vout.size(); i++)
    {
        const CTxOut& txout = tx.vout[i];
        UniValue out(UniValue::VOBJ);
        out.push_back(Pair("value", ValueFromAmount(txout.nValue)));
        out.push_back(Pair("n", (int64_t)i));
        UniValue o(UniValue::VOBJ);
        ScriptPubKeyToJSON(txout.scriptPubKey, o, false);
        out.push_back(Pair("scriptPubKey", o));
        vout.push_back(out);
    }
    entry.push_back(Pair("vout", vout));

    if (hashBlock != 0)
    {
        entry.push_back(Pair("blockhash", hashBlock.GetHex()));
        map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(hashBlock);
        if (mi != mapBlockIndex.end() && (*mi).second)
        {
            CBlockIndex* pindex = (*mi).second;
            if (pindex->IsInMainChain())
            {
                entry.push_back(Pair("confirmations", 1 + nBestHeight - pindex->nHeight));
                entry.push_back(Pair("time", (int64_t)pindex->nTime));
                entry.push_back(Pair("blocktime", (int64_t)pindex->nTime));
            }
            else
                entry.push_back(Pair("confirmations", 0));
        }
    }
}

    /* Update our model of the wallet incrementally, to synchronize our model of the wallet
       with that of the core.

       Call with transaction that was added, removed or changed.
     */
    void updateWallet(const uint256 &hash, int status)
    {
        qDebug() << "TransactionTablePriv::updateWallet : " + QString::fromStdString(hash.ToString()) + " " + QString::number(status);
        {
            LOCK(wallet->cs_wallet);

            // Find transaction in wallet
            std::map<uint256, CWalletTx>::iterator mi = wallet->mapWallet.find(hash);
            bool inWallet = mi != wallet->mapWallet.end();

            // Find bounds of this transaction in model
            QList<TransactionRecord>::iterator lower = qLowerBound(
                cachedWallet.begin(), cachedWallet.end(), hash, TxLessThan());
            QList<TransactionRecord>::iterator upper = qUpperBound(
                cachedWallet.begin(), cachedWallet.end(), hash, TxLessThan());
            int lowerIndex = (lower - cachedWallet.begin());
            int upperIndex = (upper - cachedWallet.begin());
            bool inModel = (lower != upper);

            // Determine whether to show transaction or not
            bool showTransaction = (inWallet && TransactionRecord::showTransaction(mi->second));

            if(status == CT_UPDATED)
            {
                if(showTransaction && !inModel)
                    status = CT_NEW; /* Not in model, but want to show, treat as new */
                if(!showTransaction && inModel)
                    status = CT_DELETED; /* In model, but want to hide, treat as deleted */
            }

            qDebug() << "   inWallet=" + QString::number(inWallet) + " inModel=" + QString::number(inModel) +
                        " Index=" + QString::number(lowerIndex) + "-" + QString::number(upperIndex) +
                        " showTransaction=" + QString::number(showTransaction) + " derivedStatus=" + QString::number(status);

            switch(status)
            {
            case CT_NEW:
                if(inModel)
                {
                    qDebug() << "TransactionTablePriv::updateWallet : Warning: Got CT_NEW, but transaction is already in model";
                    break;
                }
                if(!inWallet)
                {
                    qDebug() << "TransactionTablePriv::updateWallet : Warning: Got CT_NEW, but transaction is not in wallet";
                    break;
                }
                if(showTransaction)
                {
                    // Added -- insert at the right position
                    QList<TransactionRecord> toInsert =
                            TransactionRecord::decomposeTransaction(wallet, mi->second);
                    if(!toInsert.isEmpty()) /* only if something to insert */
                    {
                        parent->beginInsertRows(QModelIndex(), lowerIndex, lowerIndex+toInsert.size()-1);
                        int insert_idx = lowerIndex;
                        foreach(const TransactionRecord &rec, toInsert)
                        {
                            cachedWallet.insert(insert_idx, rec);
                            insert_idx += 1;
                        }
                        parent->endInsertRows();
                    }
                }
                break;
            case CT_DELETED:
                if(!inModel)
                {
                    qDebug() << "TransactionTablePriv::updateWallet : Warning: Got CT_DELETED, but transaction is not in model";
                    break;
                }
                // Removed -- remove entire transaction from table
                parent->beginRemoveRows(QModelIndex(), lowerIndex, upperIndex-1);
                cachedWallet.erase(lower, upper);
                parent->endRemoveRows();
                break;
            case CT_UPDATED:
                // Miscellaneous updates -- nothing to do, status update will take care of this, and is only computed for
                // visible transactions.
                break;
            }

    SproutProof prove(
        bool makeGrothProof,
        const std::array<JSInput, NumInputs>& inputs,
        const std::array<JSOutput, NumOutputs>& outputs,
        std::array<SproutNote, NumOutputs>& out_notes,
        std::array<ZCNoteEncryption::Ciphertext, NumOutputs>& out_ciphertexts,
        uint256& out_ephemeralKey,
        const uint256& joinSplitPubKey,
        uint256& out_randomSeed,
        std::array<uint256, NumInputs>& out_macs,
        std::array<uint256, NumInputs>& out_nullifiers,
        std::array<uint256, NumOutputs>& out_commitments,
        uint64_t vpub_old,
        uint64_t vpub_new,
        const uint256& rt,
        bool computeProof,
        uint256 *out_esk // Payment disclosure
    ) {
        if (vpub_old > MAX_MONEY) {
            throw std::invalid_argument("nonsensical vpub_old value");
        }

        if (vpub_new > MAX_MONEY) {
            throw std::invalid_argument("nonsensical vpub_new value");
        }

        uint64_t lhs_value = vpub_old;
        uint64_t rhs_value = vpub_new;

        for (size_t i = 0; i < NumInputs; i++) {
            // Sanity checks of input
            {
                // If note has nonzero value
                if (inputs[i].note.value() != 0) {
                    // The witness root must equal the input root.
                    if (inputs[i].witness.root() != rt) {
                        throw std::invalid_argument("joinsplit not anchored to the correct root");
                    }

                    // The tree must witness the correct element
                    if (inputs[i].note.cm() != inputs[i].witness.element()) {
                        throw std::invalid_argument("witness of wrong element for joinsplit input");
                    }
                }

                // Ensure we have the key to this note.
                if (inputs[i].note.a_pk != inputs[i].key.address().a_pk) {
                    throw std::invalid_argument("input note not authorized to spend with given key");
                }

                // Balance must be sensical
                if (inputs[i].note.value() > MAX_MONEY) {
                    throw std::invalid_argument("nonsensical input note value");
                }

                lhs_value += inputs[i].note.value();

                if (lhs_value > MAX_MONEY) {
                    throw std::invalid_argument("nonsensical left hand size of joinsplit balance");
                }
            }

            // Compute nullifier of input
            out_nullifiers[i] = inputs[i].nullifier();
        }

        // Sample randomSeed
        out_randomSeed = random_uint256();

        // Compute h_sig
        uint256 h_sig = this->h_sig(out_randomSeed, out_nullifiers, joinSplitPubKey);

        // Sample phi
        uint252 phi = random_uint252();

        // Compute notes for outputs
        for (size_t i = 0; i < NumOutputs; i++) {
            // Sanity checks of output
            {
                if (outputs[i].value > MAX_MONEY) {
                    throw std::invalid_argument("nonsensical output value");
                }

                rhs_value += outputs[i].value;

                if (rhs_value > MAX_MONEY) {
                    throw std::invalid_argument("nonsensical right hand side of joinsplit balance");
                }
            }

            // Sample r
            uint256 r = random_uint256();

            out_notes[i] = outputs[i].note(phi, r, i, h_sig);
        }

        if (lhs_value != rhs_value) {
            throw std::invalid_argument("invalid joinsplit balance");
        }

//.........这里部分代码省略.........

    // roscoin: only descendant of current sync-checkpoint is allowed
    bool ValidateSyncCheckpoint(uint256 hashCheckpoint)
    {
        if (!mapBlockIndex.count(hashSyncCheckpoint))
            return error("ValidateSyncCheckpoint: block index missing for current sync-checkpoint %s", hashSyncCheckpoint.ToString().c_str());
        if (!mapBlockIndex.count(hashCheckpoint))
            return error("ValidateSyncCheckpoint: block index missing for received sync-checkpoint %s", hashCheckpoint.ToString().c_str());

        CBlockIndex* pindexSyncCheckpoint = mapBlockIndex[hashSyncCheckpoint];
        CBlockIndex* pindexCheckpointRecv = mapBlockIndex[hashCheckpoint];

        if (pindexCheckpointRecv->nHeight <= pindexSyncCheckpoint->nHeight)
        {
            // Received an older checkpoint, trace back from current checkpoint
            // to the same height of the received checkpoint to verify
            // that current checkpoint should be a descendant block
            CBlockIndex* pindex = pindexSyncCheckpoint;
            while (pindex->nHeight > pindexCheckpointRecv->nHeight)
                if (!(pindex = pindex->pprev))
                    return error("ValidateSyncCheckpoint: pprev null - block index structure failure");
            if (pindex->GetBlockHash() != hashCheckpoint)
            {
                hashInvalidCheckpoint = hashCheckpoint;
                return error("ValidateSyncCheckpoint: new sync-checkpoint %s is conflicting with current sync-checkpoint %s", hashCheckpoint.ToString().c_str(), hashSyncCheckpoint.ToString().c_str());
            }
            return false; // ignore older checkpoint
        }

        // Received checkpoint should be a descendant block of the current
        // checkpoint. Trace back to the same height of current checkpoint
        // to verify.
        CBlockIndex* pindex = pindexCheckpointRecv;
        while (pindex->nHeight > pindexSyncCheckpoint->nHeight)
            if (!(pindex = pindex->pprev))
                return error("ValidateSyncCheckpoint: pprev2 null - block index structure failure");
        if (pindex->GetBlockHash() != hashSyncCheckpoint)
        {
            hashInvalidCheckpoint = hashCheckpoint;
            return error("ValidateSyncCheckpoint: new sync-checkpoint %s is not a descendant of current sync-checkpoint %s", hashCheckpoint.ToString().c_str(), hashSyncCheckpoint.ToString().c_str());
        }
        return true;
    }

bool CCoinsViewDB::ValidateNameDB() const
{
    const uint256 blockHash = GetBestBlock();
    int nHeight;
    if (blockHash.IsNull())
        nHeight = 0;
    else
        nHeight = mapBlockIndex.find(blockHash)->second->nHeight;

    /* It seems that there are no "const iterators" for LevelDB.  Since we
       only need read operations on it, use a const-cast to get around
       that restriction.  */
    boost::scoped_ptr<CLevelDBIterator> pcursor(const_cast<CLevelDBWrapper*>(&db)->NewIterator());
    pcursor->SeekToFirst();

    /* Loop over the total database and read interesting
       things to memory.  We later use that to check
       everything against each other.  */

    std::map<valtype, unsigned> nameHeightsIndex;
    std::map<valtype, unsigned> nameHeightsData;
    std::set<valtype> namesInDB;
    std::set<valtype> namesInUTXO;
    std::set<valtype> namesWithHistory;

    for (; pcursor->Valid(); pcursor->Next())
    {
        boost::this_thread::interruption_point();
        char chType;
        if (!pcursor->GetKey(chType))
            continue;

        switch (chType)
        {
        case DB_COINS:
        {
            CCoins coins;
            if (!pcursor->GetValue(coins))
                return error("%s : failed to read coins", __func__);

            BOOST_FOREACH(const CTxOut& txout, coins.vout)
                if (!txout.IsNull())
                {
                    const CNameScript nameOp(txout.scriptPubKey);
                    if (nameOp.isNameOp() && nameOp.isAnyUpdate())
                    {
                        const valtype& name = nameOp.getOpName();
                        if (namesInUTXO.count(name) > 0)
                            return error("%s : name %s duplicated in UTXO set",
                                         __func__, ValtypeToString(name).c_str());
                        namesInUTXO.insert(nameOp.getOpName());
                    }
                }
            break;
        }

        case DB_NAME:
        {
            std::pair<char, valtype> key;
            if (!pcursor->GetKey(key) || key.first != DB_NAME)
                return error("%s : failed to read DB_NAME key", __func__);
            const valtype& name = key.second;

            CNameData data;
            if (!pcursor->GetValue(data))
                return error("%s : failed to read name value", __func__);

            if (nameHeightsData.count(name) > 0)
                return error("%s : name %s duplicated in name index",
                             __func__, ValtypeToString(name).c_str());
            nameHeightsData.insert(std::make_pair(name, data.getHeight()));
            
            /* Expiration is checked at height+1, because that matches
               how the UTXO set is cleared in ExpireNames.  */
            assert(namesInDB.count(name) == 0);
            if (!data.isExpired(nHeight + 1))
                namesInDB.insert(name);
            break;
        }

        case DB_NAME_HISTORY:
        {
            std::pair<char, valtype> key;
            if (!pcursor->GetKey(key) || key.first != DB_NAME_HISTORY)
                return error("%s : failed to read DB_NAME_HISTORY key",
                             __func__);
            const valtype& name = key.second;

            if (namesWithHistory.count(name) > 0)
                return error("%s : name %s has duplicate history",
                             __func__, ValtypeToString(name).c_str());
            namesWithHistory.insert(name);
            break;
        }

        case DB_NAME_EXPIRY:
        {
            std::pair<char, CNameCache::ExpireEntry> key;
            if (!pcursor->GetKey(key) || key.first != DB_NAME_EXPIRY)
                return error("%s : failed to read DB_NAME_EXPIRY key",
//.........这里部分代码省略.........

std::size_t hash_value (uint256 const& u)
{
    std::size_t seed = HashMaps::getInstance ().getNonce <size_t> ();

    return u.hash_combine (seed);
}

 ~prevector_tester() {
     BOOST_CHECK_MESSAGE(passed, "insecure_rand: " + rand_seed.ToString());
 }

bool AcceptPendingSyncCheckpoint()
{
    LOCK(cs_hashSyncCheckpoint);
    if (hashPendingCheckpoint != 0 && mapBlockIndex.count(hashPendingCheckpoint))
    {
        if (!ValidateSyncCheckpoint(hashPendingCheckpoint))
        {
            hashPendingCheckpoint = 0;
            checkpointMessagePending.SetNull();
            return false;
        }

        CBlockIndex* pindexCheckpoint = mapBlockIndex[hashPendingCheckpoint];
        if (IsSyncCheckpointEnforced() && !pindexCheckpoint->IsInMainChain())
        {
            CValidationState state;
            if (!SetBestChain(state, pindexCheckpoint))
            {
                hashInvalidCheckpoint = hashPendingCheckpoint;
                return error("AcceptPendingSyncCheckpoint: SetBestChain failed for sync checkpoint %s", hashPendingCheckpoint.ToString().c_str());
            }
        }

        if (!WriteSyncCheckpoint(hashPendingCheckpoint))
            return error("AcceptPendingSyncCh